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1
The purpose of this tool is to quickly remove fasteners after they have been broken loose using a breaker bar or ratchet. This tool is meant to be used with 1/2" drive sockets.  +
A pill holder to hold daily pills for up to 14 days  +
2
Winnowing is a process to remove lighter particles of chaff, dirt, etc from grain and other products typically by throwing it into the air and blowing air on it.  +
3
This OSAT is a digital mass balance with two outputs: Digital output for data logging capabilities, and an LCD display.  +
This page contains the instructions and files necessary to 3D-print a loudspeaker.  +
A customizable open-source PV racking concept is designed, prototyped for three types of modules, constructed into systems, and outdoor tested under extreme conditions for one year. An economic analysis is provided along with a technical evaluation of the system.  +
A low-cost 3-D printable open source dual axis gimbal system is presented in this study. An Arduino based microcontroller is used to move the sample holder to the user specified angle where two stepper motors control the motion providing two degrees of freedom.  +
In order to ensure appropriate spacing and well oriented array these open-source photovoltaic spacers can be printed. The design has been created to be parametric in OpenSCAD so this design can be used for any conventional array.  +
This is a solar charger or an emergency light. It runs on a 6660 mAh battery.  +
An effective method for the diagnosis of severe acute malnutrition is the measurement of the middle upper arm circumference (MUAC).  +
This speculum takes a different design that current production models to eliminate the need for pivot hardware or large joints. The open jaw design allows for greater operating and inspection area.  +
The goal of the 3D-printable cider press is to provide an affordable means of efficiently pressing cider. With scaled-up designs, the press can be used to produce enough product to sell excess not used for subsistence.  +
Goniometers are simple devices used to measure the angular range of motion of human limbs. A 3D printed goniometer can be more durable than a commercial one. With the 3D printed version being so extremely cheap, patients can be provided their own goniometers to monitor their own range of motion, thus reducing expensive doctor's visits.  +
Small Bike seat and seat post that can be used to replace an original bike seat.  +
Carpenter knife  +
Print Out Custom T-Shirts at your Home right from your Desk with an Amazing 3D Printer!  +
This project was to replicate the already produced gravity light into the 3D Printed and open source world.  +
An otoscope is simple device used in the diagnosis of ear, nose, and throat diseases.  +
Open source design files provided for 3D printing of open-toed shoes. It is estimated that two billion people worldwide are currently plagued with parasitic diseases that could be prevented by wearing proper footwear.  +
One inexpensive way to add iron to a person's diet is to boil water for cooking with a lump of iron for 10 minutes before adding any food. Lucky iron totems composition must be monitored to ensure that toxic levels of elements are not going to be absorbed by the food cooked in the boiled water.  +
3D printable prosthetic foot design  +
5
Step by step instructions for how to build a solar water condenser out of a large drum/barrel. Also has step by step instructions for how to build a solar water condenser that is left unattended for extended periods of time.  +
7
Bicycle part  +
A
This article provides a detailed how to for construction and use of this bailer as well has some design. A discussion on the application of this system and its bales is also included as well as a brief introduction to alternative machines.  +
The goal of this project is create a safer way to smash and shell acorns  +
This 2 inch wafer dipper is designed to fit into a 250 ml Schott Duran beaker. Number of wafers that can be fitted are automatically calculated and taken into account. The user needs to think only the size of his or her beaker and ofcourse the wafer dimensions.  +
The task is to adapt a widely available thermostatic valve for use in the solar water pasteurizer. The thermostatic valve that will be used comes from the coolant system in automobiles.  +
This OSAT makes biking safer by providing a cheap, easy, adjustable way to mount a mirror to the handlebars of a bicycle.  +
An adjustable heated bed that we could adjust to heat only the parts that we want to print on. (limit use of power to what is needed)  +
This is a twisted tent stake designed for use in more challenging soil types.  +
Plasmonic light trapping technology increases the ability and effectiveness of a thin film solar cell to absorp more light and light from a larger spectrum. Article includes links to more detailed websites on this topic and also links to other appropedia sites that have to do with solar technology.  +
3D printed Alm retractor  +
Amorphous silicon is a non-crystalline allotropic form of silicon that is bonded tetrahedrally. Amorphous silicon is a solar cell technology that has a high absorption coefficient but these solar cells can be instable when light hits the material.  +
An easy treatment in the earlier stages of the injury can be the use of ankle splints during sleep which helps lengthen the plantar fascia to reduce inflammation.  +
This ankle brace is designed to be stronger and more versatile than other OS ankle braces available online. Most notably, this brace does not require any heat forming where most others do.  +
A solar refrigerator directly uses the sun's heat to run the refrigeration process and can have many uses.  +
Scalable aquaponics system  +
This project aimed to give the Athena Delta printer a sleek looking heated bed that took advantage of the printer's shape.  +
The dual extrusion solution that I have chosen is one which uses a single hotend and only requires the addition of another extruder and a printed part to merge the outputs of the two filament extruders. This solution has the advantage of requiring no additional calibration, not needing added hardware for the second hotend and inputs and outputs to drive that hotend, and maintaining full build volume.  +
Engraver mod on the Athena II printer allows you to engrave various designs on acrylic sheets, plexiglass, cardboard and/or wooden surfaces.  +
AS heated print bed also has the advantage of being able to use a surface like PEI (polyetherimide) to print onto.  +
This Laser Engraver mod on the Athena II printer will allow you to engrave various designs on cardboard and/or wooden surfaces (acrylic material yet to be tested).  +
Aurora Solar Software is a solar design software that allows for the remote design of solar projects, estimate energy production and utility bill savings, and offer different financing scenarios using some special features such as consumption profile estimations, shading analysis, performance simulations and much more.  +
This Effector for a column delta printer, like the MOST delta RepRap allows different hotend nozzle sizes to be used  +
AutoInjectors are a spring-loaded device that aides in delivering the proper dosages of certain medicines. Prototype scad files for Autoject El replica are found in external links.  +
Affordable and strong plastic grinder  +
The azimuth angle is usually measured in degrees and describes the angle between a reference plane and a point of interest. The azimuth angle can be useful in many contexts.  +
B
This is a Bamboo Joint model that can be used in building bamboo houses, rooms or any sort of suspended pavilions.  +
A simplified means of using natural fibres to create a menstrual pad is described below.  +
A simple tent stake.  +
Two Humboldt State University students designed and built a solar dehydrator for the Bayside Park Farm in Arcata,CA. This project was based on a set of constraints and criteria. Prototypes were made and tested before a final design was decided upon.  +
Sugar water bee feeder  +
A queen rearing kit allows the beekeeper to properly breed more queens to maintain their hive.  +
Brake Calipers are an important component required to build a bicycle.  +
The hub profile was modeled in FreeCad, rotated around the axle, then sliced with slicer and printed on a MOST-Delta Printer.  +
An affordable 3D printable cargo rack was designed for hauling goods or personal items  +
This design can be printed to produce a bicycle chain (untested).  +
This universal bike chain guard improves the safety of a bike for people who may not have access to a new bike or chain guard and is attached simply by string or a zip tie.  +
This chain tensioner can be used to address issues with chain hopping, chain slap, and rattles.  +
A customizable Bike Handlebar Plug designed using OpenSCAD.  +
A Pelton wheel takes the kinetic energy and harvests it in two ways. It uses the static pressure to push the blades and then uses the added force due to the tangential acceleration of the water around the curve of the blade to harness more power out of the jet.  +
This bike pedal is fully 3D printed and clips together around a bar/axle.  +
This part was designed to replace the original axle on my 2017 Raleigh Tokul 3 mountain bike, but could easily be modified to fit any "Thru" style bike axle.  +
This OSAT project is to build upon previous bike fender creations. This is an extension to the Duck Flap bicycle mud flap.  +
Rear Bike rack  +
3D printable design of the black mamba bicycle pedal.  +
The Blind Person's Assistant is based on ultrasound measurements. The sensor in bracelet measures distance in front of it in the range up to 12 feet (4 meters). In case of an obstacle in the range of 0.5 meters or closer, the buzzer creates a high sound and the low-power laser creates a light beam.  +
The proposed design utilizes a recycled bottle and cap (with a cap diameter equal to or greater than that of a 2L pop bottle) as a portable, durable platform for a high efficiency LED lighting system that is charged using a small solar panel  +
3D printable design for bow and hand drill fire set  +
The doughnut shaped design will not allow the arrow to leave the rest while the bow is positioned in any shooting angle, the parts are stout and durable, and in the event that one breaks, the parts have been designed to be easily and quickly changed in the field.  +
3D printable design of the black mamba bicycle brake calliper.  +
The apparatus can be mounted to a 5-gallon bucket, or larger, and would be able to convert said bucket into a shower for developing countries.  +
5-gallon vermicomposting system  +
Mosquito bed-netting represents the most inexpensive way of effectively eliminating mosquito bites while sleeping.  +
Small, easily producible, hand sized, bulb and seed planter. The current opening fits groupings of seeds or a small bulb, but can easily be sized to fit a larger bulb as well.  +
Butterfly bicycle handlebars designed to fit 25.4 mm clamp.  +
C
The purpose of project CCATBox was to design a composting toilet system to be used at CCAT in order to save water and recycle the nutrients that were being flushed away.  +
Building garden beds and growing within a controlled environment will make the plants grow healthier and also will prevent toxic chemicals from leaching their way into whatever will be grown in the beds.  +
This project is a solar charger designed and built by Humboldt State University students who are involved in the Campus Center for Appropriate Technology (CCAT). Panels were placed on the roof and will be used to charge USB powered devices.  +
Die "Waschen & Sp√ºlen" ist ein umweltwissenschaftliches Projekt der Humboldt State Universit√§t, welches durch Jeffrey Steuben, Annie Welbes und Tim Dower realisiert und in der Toilette im Untergeschoss des CCAT umgesetzt wurde. Es handelt sich um eine Modifikation der Toilette, die es dem Benutzer erm√∂glicht Wasser zu sparen, in dem das Abwasser des H√§ndewasschens zum Sp√ºlen der Toilette wieder verwendet wird.  +
The Wash n' Flush is a Humboldt State University environmental science 410 senior project implemented by Jeffrey Steuben, Annie Welbes and Tim Dower which is located in the downstairs bathroom at CCAT. This is a toilet modification that allows users to save water by utilizing the wastewater from handwashing to flush the Toilet.  +
The goal of the project was to implement a solution that would protect and beautify the cob installations at CCAT.  +
This project is designed to give a basic understanding to anyone who may be interested in the mechanics involved in converting the energy of wind into electrical energy. This is a basic knowledge that could spark interest in others and initiate further study.  +
This display will be hands-on where a child can use their own power to operate an electronic device. The importance of this project is to plant the seed in a child's mind of understanding how human power is simple, yet can be utilized in so many ways. The hands-on display will need to be durable and able to withstand regular abuse from kids.  +
The objective of this project is to assist CCAT by improving their greywater treatment system. Team ECO-PLUMBERS designed a particulate filtration system, which is built to remove particulate matter from kitchen wastewater.  +
Constructed, with the help of CCAT and student volunteers, from stick frame and infilled with papercrete and clay-slip straw with a recycled brick base, and covered by a cedar shingle roof. This wall will then have information signs attached for visitors of CCAT campus.  +
The goal of this design is to allow a lubrication and chip clearing module addition to a CNC router.  +
A large solar farm (250 MW) is proposed on the Carrizo Plain that will take up about 1,900 acres. This project will benefit the area with a renewable energy source and educational value from the public viewing areas, but may endanger some wildlife in the area as it is close to the Carrizo Plain National Monument that has a vast wildlife population. An EIR was released in 2010 addressing these issues.  +
3D printable caliper. Calipers are a useful tool because they provide a bit more accuracy than a standard ruler.  +
3D printable can opener (design must be modified to function)  +
This product brings out car charging ports and makes it easier to plug in cables while driving.  +
This is a device that clips into the heater vents for anyone who owns a car. For an example, this hanger can be used to dry out gloves or similar items after a day in the snow.  +
This page lays out the steps required to convert your current Delta Athena II printer to reduce the rattling of the connecting rods during printing.  +
Increases the longevity of food by pressing part, or all of the liquid out of the food. Additionally, with minor design changes the press design could be adapted for other uses, such as for pressing ash to form activated carbon filters for use in rudimentary water filters.  +
This set reduces the cost of gardening tools not only by using cheap material, but also because it is only necessary to have one handle as the different heads can be interchanged  +
The pen will keep the canvas that they are using free from excess smudges where the charcoal would have made their hands messy. Having the charcoal in a well-protected space it will keep the canvas and the artist safe from the mess.  +
The pen will keep the canvas/notebook that they are using free from excess smudges where the charcoal would have made their hands messy.  +
Appropriate chicken feed holders can help keep feed isolated from contamination such as feces and minimize the outbreak of diseases.  +
This is a baseplate for a poultry feeder and waterer; a gallon jug would be used as the hopper.  +
The Purpose of a Chicken Tractor is to use it as a passive tilling system for a tract of land. The chickens living inside the tractor walk, pick, and eat off the grass.  +
Food dehydration is both a desirable and appropriate technology for many reasons which include increasing the shelf-life of food without having to use refrigeration, and reducing product size which can maximize storage space. Also, the process of dehydration is used to enhance foodstuffs directly (e.g. jerky, fruit leather) and indirectly (e.g. spices).  +
Makala hii inahusika na uundaji wa mfumo wa kuchuja maji wa gharama nafuu sana. Uchujaji maji unaweza kufanyika kama kuna njia chache ama hakuna kabisa njia mbadala za kupata maji safi toka vyanzo vingine kama vile maji ya mvua, maji ya ardhini (na sio yatembeayo juu ya ardhi)  +
By using a geared system, much more force can be placed on objects compared to an un-geared clamp.  +
Clamps are an essential tool in building just about anything from scratch. This OSAT is intended to take the place of woodworking clamps.  +
A 3D printable brace that can be used to treat children born with club foot.  +
Compact, cheap commodes could be used in disaster relief operations, hospitals, and households.  +
This OSAT prototype is a community comment box where members can drop in comments that can not be removed other than by removing the lock from the back.  +
The design is made using OpenSCAD and is mostly parametric, allowing for adjustments in volume, wall thicknesses, and pouring hole sizes to suit the needs of the task. This design allows for mixing multi-part resins in the rounded body of the container as well as pouring wide, even lines of resin out of multiple holes at the top.  +
Toilet seats and hinges are an overlooked item in the modern world. A proper seat and hinge provides support for when nature calls. This item may be used in a composting toilet aplication.  +
Compound parabolic concentrators (CPCs) can be additions to solar water stills, solar water pasturizers, and solar cookers. CPCs can increase the output of these devices along with their efficiency by concentrating the sunlight to make the device more effective.  +
This trowel would help fulfill the needs of affordable tools for concrete and interior work on houses and buildings in developing countries.  +
By modeling a bucket with just its top and bottom diameters and its average thickness, it's easy to design a spigot with contours that fit well. This design is expected to fit a wide range of bucket sizes effectively.  +
This device is supposed to replace the mortar & pestle by making it easier and less labor-intensive to grind corn into flour.  +
Cotton obtained from the farm can be extracted into yarn with this tool.  +
Crawler Harnesses can be cumbersome to keep in your tackle box without a holder and more often than not, if you're walleye fishing, you have a tackle box FULL of crawler harness holders just to keep up  +
Goal of this project is a design of a tool for attitude system testing for CubeSat class of satellites. It is based on the airbearing principle  +
People looking to purchase motors similar to the ones in the market  +
This is a shovel handle to either replace broken ones, or add one in where the shovel/hoe/whatever tool has only the wooden handle. Grips such as these can offer not only greater leverage but also comfort and wrist relief preventing long term injuries such as carpal tunnel.  +
These lights can be needlessly expensive, so I designed a customizable mount that can be used with any standard flashlight.  +
Printing a shovel handle is an easy way to ensure you are getting what you need and my design will make sure it is also comfortable in your hands.  +
D
The final goal of this project was to provide a refuge for homeless senior citizens within the compound of the Parras Desarollo Integral de la Familia (DIF) so that they can find shelter and companionship, as integration of the family and community is an important part of the Parras culture.  +
The DIF wanted to construct a space for the viejitos of Parras who do not have families to be able to relax and enjoy a meal and the company of others, and enlisted the help of the HSU Parras program.  +
A solar panel that produces enough energy to charge a smaller battery or a device  +
Instructional video for sewing the Olson mask  +
Instructional video on how to do a face mask out of a tshirt in 5 minutes and with no sewing  +
Solar thermal collectors collect heat from the sun and put it to a use. Solar thermal collectors can function as many different uses such as: solar thermal cookers, solar thermal dehydrators and solar thermal hot water heaters. This page gives several examples of each of these examples.  +
This device cheaply allows women to track their cycle easily, and can also be used when a couple is having trouble having kids.  +
Dental Chair (SCAD files not provided)  +
This type of pump uses an adjustable PVC piping system to vary both the depth of the system, and the force needed to bring up water. The pipe is able to be lowered to a desirable depth, and locked in place, so that it remains rigid while in operation.  +
3D printable kidney tray  +
Solar water pasturizers can help clean water in poorer communities but a barrier to their popularity in those countries are their high capital costs, which primarily come from the heat exchanger cost. This study explored different materials/technologies to reduce the heat exchanger cost while also optimizing its performance.  +
The presented treatment unit serves as a means to reduce turbidity in water to be subsequently treated with solar water disinfection (SODIS) technology. The unit is comprised of a well-graded sand filter through which turbid water flows and subsequently settles.  +
This work offers a primer to the topic of AWVPs, and a description of how to build a dew collection rig. Unfortunately, dewfall is not currently recorded in most standard meteorological archives; so the next step for this project is to offer a reliable means of regional assessment that is accessible to a layman.  +
This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.  +
The current setup on the Athena II printer is not suited for flexible materials like ninja flex. Due to the bowndeth sheath setup we mostly use stiff filaments such as PLA. The new design was based off of the desire to remove the bowden sheath from the printer and to get the same impact as a direct drive printer.  +
Simple and easy to produce, temporary housing platform to to aid in living conditions after a natural disaster  +
The OSAT is Drip irrigation assembly combining the stake and drip emitter with tubing. The drip irrigation system has been around for years, but this is the first of its kind to be 3D printed.  +
This is a payload attachment for the DJI Phantom 3 quadcopter. Unlike other payload attachments, this does not require the removal of the camera gimbal. This design may be useful in search and rescue operations.  +
The Drop Spindle is an ancient tool used for spinning fibers such as wool, cotton, flax, and hemp into yarn, without the need for a large, expensive, and complex spinning wheel. This a 3D printable drop spindle.  +
This is a 3D printed Security Siren that could be used in low income areas where theft or other problems are an issue. The purpose of the siren is to get the attention of others nearby when a crime or other emergency is happening.  +
It allows people to create their own dust masks to fit the correct size (by scaling up or down), and it uses more readily available materials.  +
E
The objective of our project is to take organic waste including dog, cow, and horse excrement, as well as kitchen waste and recycle it. Methane is a harmful greenhouse gas that can potentially be harnessed as a clean-burning renewable fuel.  +
ESCO stands for Energy Service Company. ESCOs provide services that include developing, designing, and (sometimes) financing energy efficiency projects, installing and maintaining the energy efficient equipment involved, measuring, monitoring, and verifying the project’s energy savings, and assuming the risk that the project will save the amount of energy guaranteed.  +
Step by step guide to building a retained heat cooker  +
Electric Mountain Board  +
An electric hand-whisk is a handheld mechanism used for whisking, beating or stirring different liquids. This design incorporates 3D printable parts.  +
This 3D printable stethoscope uses an electret microphone and audio amplifier to drive a pair of earbuds. This allows for high amplification, flexibility in listening as two or more people can listen to the audio, and potentially even recording and transmission to remote doctors.  +
Here the aim is to define center area of the sample to be plated by isolating the rest of the sample and contacts with O-rings. This way it is possible to have continuous seed-layer on the sample while plating only in the center of the sample.  +
There are many components and information that are important to a solar system. Each functions differently depending on the situation/functionality of the system. This article gives an overview/explanation of each component that are most common in solar systems. These components and useful knowledge include: the solar cell, solar panel, module, charge controller, battery, inverter, loads, circuit breakers, fuses, switches, solar radiation, hours of sun exposure, voltage regulator, meter, generator, wiring, and sizing.  +
This is an Ergonomic Ice Scraper. This is a very cheap alternative to buying expensive ice scrapers. It fits in your hand nicely and also works really well for scraping ice off your car windows. It can also be used as a funnel simply by taking off the cap.  +
This fulfills the need for a comfortable cheap alternative for current bike grips on the market.  +
A portable solar charger uses a small solar panel to charge small devices, such as a cell phone. This site describes briefly how a solar cell works and lists the materials needed to build your own portable solar charger.  +
The purpose of my project is to determine the cost inputs and energy outputs of small scale ethanol production from local and conventional sources.  +
F
This simple device not only saves hours of painstaking labor, but also increases the viability of the nut as a cash crop.  +
The Full Belly Project is an organization which creates low cost, simple technological solutions to be implemented in developing countries. One of these solutions, the Universal Nut Sheller, minimizes the work load of women in Western Africa by allowing nuts to be shelled through this device rather than by hand.  +
The objective of this project is to reduce the cost of the current Universal Peanut Sheller. The new peanut sheller will be used in West Africa where there is a limited access to materials.  +
A simple alternative to 3D printed ear relief bands for using face masks.  +
This device is used to collect a small fecal sample for testing. This can range from DNA testing to testing for disease. Fecal matter can tell a lot about someones genetics and body function.  +
The OSAT field dressing tool allows the user to cut only what is needed from the animal in a safe manner. With this tool the user can field dress an animal faster and safer than with a traditional blade.  +
The design fulfills the need for a cheap single 3D print that will function as a ECG limb lead holder.  +
A nebuliser works by using compressed air to convert liquid medicine to an aerosol that can be inhaled by the patient. This is a 3D printable design  +
The reason this design challenge was created was to replace a poorly designed connector for an air hose on a nebuliser. The current fitting often snaps off under normal use and requires a significant amount of effort every several days to re-glue the undersized fitting back on.  +
This extruder allows you to create cheap filament from ground/pelletized plastic  +
It is a 3D printable handle that serves three functions: a razor blade to cut open the belly, a scoop to clean out the guts, and a scaler to scrape off the scales. This multi-functional tool is all that would be needed to quickly and effectively clean fish in order to increase the storage life.  +
It allows fisherman to spend their time more efficiently, fish for longer periods of time, catch more fish, use fewer hooks, and cut down on the risk of injury. This means more fish are being used to feed hungry people or sell/trade for economic gain.  +
The fishing pole rod holder is an OSAT as it allows a person that is fishing to set their fishing pole in the holder that sticks into the ground and can be left unattended to catch fish.  +
This is a much safer way to light dark areas then a gas lamp, which can start fires and releases harmful gasses.  +
The objective of the main unit is to provide enough dehydrated food to significantly contribute to the sustenance of the two individuals who will be living in the pod during the summer of 2012.  +
The Flock House project is a concept to provide a new form of housing for different migrating populations throughout the world.  +
The team was challenged with the task of developing a bicycle powered generator capable of generating 100+ watts while enabling the use of all types of bicycles. This project is intended to increase the general public understanding of renewable energy and allow for any cyclist to take part in generating energy.  +
The objective is to create a human powered generator that produces energy in an entertaining and innovative way that may be operated by people of most ages and capabilities.  +
The objective is to design a power meter which displays two types of data: the status of the battery and the power generated by volunteers for the Flock House. The display must be clearly visible from at least 20 feet and be visually appealing to the public.  +
Flowmeters are the devices that are used to measure the flow of liquid & gases that pass through them. This flowmeter is 3D printable.  +
Tweezers are used for a range of purposes, from removing foreign bodies to handling sterile bandages. However, if dropped, they must be re-sterilized, which can make routine tasks frustrating and slow for health workers who often only have a couple of pairs. This design is 3D printable.  +
A fork support is inserted in between the fork of a bike to help hold the suspension rigid during transportation the bike.  +
This segmented design is able to account for the variations in stud width (Metal Stud = 1.375 in., Wood 2x4 = 1.5 in.) and stud-center to stud-center distances (12 in., 16 in., 19.2 in., 24 in.) that are commonly used while framing. This tool is intended to make the process of wall framing easier and more time efficient.  +
A contactless smartcard solution using Mifare Classic card. Cynergy designed and developed this reader from scratch. The application runs on a microchip processor and is written in C.  +
This project is made for people who wish to pick unreachable fruit from trees. Forcing fruit out of a tree causes it to bruise and spoil quicker than that that is picked from with care.  +
This fruit crusher project is designed for less developed countries that do not have access to the technology that other countries have. It fulfills the need to crush fruit down for cooking and baking that would otherwise be a laborious task as well as a time consuming one.  +
The corner restraint is a simple design that can be easily changed through it's FreeCAD file and it is designed to be printed without the use of support material to save plastic. When trying to safely transport material, this tool would be very useful and cost-efficient.  +
The scoop allows the picker to keep a further distance from the bush, putting a barrier between them and any creatures living in the plants.  +
Fume extractor is used in laboratories to extract harmful chemical fumes  +
G
This GPS clip allows a user to mount a GPS to a belt, backpack strap, or other webbing attachment.  +
This OSAT is a garden hose splitter that can be used to split water streams from a common garden hose nozel. This splitter can be customized to any desired size, and can be paired with multiples of itself to further increase splitage.  +
This project was originally intended for the developing world to aid in farming and rapid planting.  +
This garden water sprinkler can be easily used to sprinkle water on a certain given region of garden by inserting a jet stream of water.  +
Ghetto2Garden is a project in the Dominican Republic carried out by students from Humboldt State University in the Practivistas Dominicana Program in collaboration with Universidad Iberoamericana (UNIBE), Collectivo RevArk, and Ghetto2Garden. This project provided Ghetto2Garden with solar electricity to power lighting, outlets, and a water pump.  +
The need that this fulfills is to provide light to any area without the need for a power/electrical hookup, as well as possibly providing a way to charge a phone in a certain situation.  +
This ground collector is based on the nut, golf ball, tennis ball, or fruit collectors that are on the market. Simply put, a rolling cage is affixed to the end of a broom stick and is pushed across the ground.  +
The tool is made for spreading grout for tiling. Other functions include smoothing concrete and spackling.  +
Gyratory action provides gentle, thorough mixing. (3D printable)  +
H
The house already operating with a grey water system will be able to conserve water by controlling how much water is used and where it drains to. The water source will be from the water catchment already in place as well. This washing machine won't demand any electricity.  +
A project where Humboldt State University (HSU) students obtained a solar suitcase from the non-profit We Share Solar. The solar suitcase is a portable, small scale solar system. These students constructed and tested the solar suitcase then gave a presentation and taught a class of college students how to build this solar suitcase and test it in a learning environment. The purpose of these solar suitcases is to provide electricity to rural/poor locations in the world. After the construction of small and larger solar suitcases for this project, some were sent to developing countries to provide some citizens with electricity.  +
This hammer is an appropriate OSAT because a hammer is one of the most basic and necessary tools to build a structure. A hammer like this would be easy to print, low cost, and fill a real need for a developing area.  +
This is a 3D printable hand drill which can be used to drill holes in any soft material such as wood. This design is based largely on old antique hand drills  +
This Hand Pump Drill is a mechanical drill that utilizes human effort to perform the functions of a drill.  +
This 3D printable model requires additional bolts and a handle of the user's choosing.  +
This project is a hand shovel. It can also be scaled up easily into a normal shovel.  +
This 3D printable device is a portable, easy to use unit that uses a limited amount of water. Could help prevent spread of sicknesses in a village or house without access to running water.  +
The hand wood planer is designed for making medium to detailed design cuts on wood.  +
This OSAT is a hand cultivator. It is used to clear land and to assist in gardening tasks. This is an appropriate tool because it assists in making a better garden that will produce more crops.  +
This part was built to meet the needs of one of our professors; Dr. Greshenson, that heads a bike Enterprise program at Michigan Tech.  +
This Open Source Appropriate Technology (OSAT) aims to decrease the overall cost of a standard crutch and to enter the specialized market.  +
The basic design are buckets that can be suspended by any rope over each other with holes in the bottom to allow excess water in each bucket to spill through and water the next plant below.  +
This project is designed so that it could be used for tracking the sun light and convert it to electrical power using the solar panel.  +
A heliostat is a device that strategically places mirrors to reflect the sun to a certain point. This point is typically stationary while the reflectors can move to track the sun to reflect the maximum amount of sun. Heliostats have applications in solar energy, astronomy, and agriculture. There are many different types of heliostats that include: manually operated heliostats, clockwork heliostats, light sensor controlled heliostats and computer controlled heliostats. These devices are widely used for many different purposes.  +
Hemostats are a medical alternative to clamps. They are especially useful when the user only has one hand available  +
Hexayurt is a hexagonal shaped yurt structure that is typically used as a living space. A hexayurt doesn't have the typical housing systems (such as electricity and sewer lines) but different methods of providing these services. The hexayurt infrastructure can be made of different materials, all serving a different purpose. This site goes into detail about those materials along with other applications of the hexayurt.  +, This site describes an option for a photovoltaic system that can be incorporated for a hexayurt to replace the need for connection to the typical power grid.  +
Hexayurt is a hexagonal shaped yurt structure that is typically used as a living space. A hexayurt doesn't have the typical housing systems (such as electricity and sewer lines) but different methods of providing these services. The hexayurt infrastructure can be made of different materials, all serving a different purpose. This site goes into detail about those materials along with other applications of the hexayurt.  +, This site describes an option for a photovoltaic system that can be incorporated for a hexayurt to replace the need for connection to the typical power grid.  +
This site describes an option for a photovoltaic system that can be incorporated for a hexayurt to replace the need for connection to the typical power grid.  +
3D printable hinges  +
The design of most biogas systems can be traced to either the China Fixed Dome (CFD) 6+ million in-use or the India Floating Cover (IFC) 2.9+ million in-use. The Philippine BioDigester Home Biogas System (HBS) is a product of both designs.  +
Home biogas system. The design of most biogas systems can be traced to either the China Fixed Dome (CFD) 6+ million in-use or the India Floating Cover (IFC) 2.9+ million in-use.  +
Wheel hoes are fantastic labor savors in larger gardens and organic farming. Folks who are handy in the shop can build one from an old child's bicycle very inexpensively  +
Honey Forge for bees that are constantly losing their natural habitat.  +
The hori hori has uses in gardening such as weeding, cutting roots, transplanting, removing plants, sod cutting, and splitting perennials.  +
The goal is to provide any number of farmers, herders, or others access to custom, new horseshoes.  +
Construction of a laser trip-wire to shut off a Delta printer in the event of a detached hotend nozzle or rod  +
An open looped, solar hot water system was repaired in Humboldt County. Both of the dribble valves were replaced for this repair.  +
A passive solar heating system was designed, built and installed on the roof of Hotel Perote in Parras de la Fuente to heat the hotel's pool. This design utilizes PVC and copper piping to heat the pool water to 28 degrees centigrade from October to March.  +
A heliodon shows the movement of the sun's movement across the earth for a certain longitude and latitude and a set day for twelve months. Follow the instructions on this site to build one.  +
This site is a personal experience about learning how to start a solar company. The author first did a lot of research online about solar and how to start a solar company. Next, initial costs were discussed. The author found some very helpful websites to aid in their learning and suggest attending trainings and classes to learn more.  +
Used to evenly water plants from a central location using a timer and a water pump.  +
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Its purpose is to be able to scrape ice off of objects that have the ability to accumulate ice. In order to increase usability, the scraper has adjustable handles and extensions that allow it to be customizable to the user or task at hand.  +
This bike handle is designed to be 3d-printed. It has been tested using standard PLA, but should work with any other standard printing material.  +
The goal of this project was to improve on a previous design which targeted to make a GPS belt clip; this model is specifically targeted at search and rescue style GPS systems with a spine style mount.  +
Improves on previously wasted material, long print time, and lack of modularity of other 3D printable hammer.  +
This Bottle Stripper turns PET bottles into long strips that can be used to weave baskets, use as fishing line, use as a type of rope, or possibly even as 3D printer filament. This design spools the strips automatically as it operates.  +
A potato ricer is used as a way to mash potatoes. This ricer also has the option of changing out the mesh to produce varying sizes of riced potatoes.  +
When money is hard to come by and other tools take priority, a tool that makes a corner at a 90 degree angle is usually not high on the list of equipment to buy. I wanted to make a relatively cheap tool that can do this.  +
Insolation is the sunlight that hits the earth  +
This is an implementation of using a photoelectric smoke detector to trigger the reset pin on the Beaglebone Black Rev C being used on the MOST Athena Delta 3D Printer. The purpose of this design is to prevent and minimize printer damage, overheating, temperature runoff, and fire risk when a 3D printer is running unattended.  +
The International Solar Alliance (ISA) is an initiative launched by France and India during the Paris Climate Change Conference in December 2015 and aims to meet the Paris Agreement goals. It is relevant to countries that receive a lot of sunshine each year and the ISA helps that country to harness and use that sunlight as a renewable energy source.  +
An inverter converts DC electricity into AC  +
These locking forceps (also known as a hemostat) are considered an appropriate technology because they provide a basic human need, sanitary medical instruments.  +
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The objective of this project is to build a compost system for the WCIA that will handle their green waste materials, as well as provide a nutrient source for their on site community gardens.  +
The objective of this project is to transform the landscape located at the front entrance of the Jefferson Community Center and Charter School.  +
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These jigs are used to make holes to join together pieces of wood in products such as tables, clocks, nightstands, or any fine finished wood product.  +
Using light to kill germs in water is a effective water purification technique. It works by using light, sunlight or more effective, UV light, to disrupt the germ/bacteria DNA, causing them to become harmless. This can be done by filling plastic or glass bottles with water then letting them sit in the sun for extended periods of time.  +
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Our objective for the water project for the 2014 Practivistas Dominicana Program in La Yuca is to replace the flat piping system, used to catch rainwater runoff from the roof, with a gutter that will obtain more water.  +
The objective of this project is to provide inexpensive potable water and water for cleaning to the local school in La Yuca, Santo Domingo by use of rainwater catchment. Replacing purchased water with captured water may allow funds to be allocated for other important services.  +
Students from Humboldt State University that were part of the Practivistas Dominicanas program traveled to a city called La Yuca in Santo Domingo, Dominican Republic. This group of students built a solar power system for a school there that allows the school to run lights and fans and function when there is a power outage in the area as well.  +
The objective is to fix the ecoladrillo schoolroom by adding a new plaster to the walls, fixing the floor, and fixing the ventilation of the room using natural building techniques.  +
In the summer of 2012, Humboldt State University students returned to the Dominican Republic to improve the system to simplify the process of removing the system's rotating parts. With the help of UNIBE students and La Yuca community members, the wind turbine was upgraded to be more safe and efficient.  +
The objective for this project is to build a small local pharmacy (Botica Popular) for the people of Las Malvinas, which will provide basic medical supplies and medications to the community at a much lower cost.  +
Construction of a laser trip-wire to shut off a Delta printer (specifically MOST delta RepRap) in the event of a detached hotend nozzle  +
Provide Laurel Tree Charter School with an energy monitoring system that shows energy consumption in a way that was both interesting and understandable to students of all ages.  +
The human powered blender is a device intended to be used by students in grades K-12 at Laurel Tree Charter School in Arcata, California. The device will blend food in the school's cafeteria, while teaching students about alternate methods of energy production.  +
The objective of the Current Specialists was to design, build and implement a learning apparatus to teach the difference between series and parallel wiring. The device was required to include an element of mystery while catering to grades 7-12.  +
The purpose of this project is to create a low embedded energy, natural, beautiful way to cook pizza.  +
Leaf Protein Concentrate (LPC) is a protein rich substance similar to a curd or cottage cheese. LPC can be made from many varieties of leafs and can feed lots of people for a very low cost. In order to make LPC, the juice must be extracted from the leafs using a press.  +
These wrenches are easy to carry, relatively durable, and much cheaper than conventional options. They can be made with locally available materials in PLA, ABS, or other filaments, and could be used to service the printer itself.  +
This limb prosthetic could be used in areas where such would be hard to come by or too expensive to buy. It could also be used for someone who would like to customize their limb prosthetic and make it personalized.  +
The load carrier is designed in such a way that the weight of is evenly distributed and the laborer would not get tired. It is 3 Way load carrier which functions as a trolley, as a overhead load carrier and also as a backpack.  +
A thermostatic valve for a solar water pasteurization device. See [[Adapted thermostatic valve for water pasteurization]] for final design.  +
Low profile bracket that had a small shelf to manage the power supply, 4 through holes for attaching it to the ceiling, as well as a counter bored hex nut to secure the ball swivel to the bracket.  +
Snaps can be used in a variety of ways; shirts, coats, satchels or bags, or any other system that would be desired to hold together. This simple idea of a snap system and the varities of of uses make this an aopporiate OSAT project.  +
LSP works by collecting the solar rays that hit the moon's surface, transforming those rays into microwaves, sending those microwaves to rectennas on Earth that convert those microwaves into direct current that can be then converted into alternating current and fed into the electrical grid.  +
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In order to print materials other than PLA, a controlled environment is needed to prevent rapid cooling which leads to plastic warping. After searching for enclosure modifications, I decided to create my own, low-cost modification to fix a relatively simple problem. My design has been created as an affordable, "good enough" solution.  +
Heated bed that still allows for the addition of extuder fans and secondary hotends.  +
The Honey Cow is designed to mimic nature as much as possible.  +
Manual Centrifuge Apparatus is a scientific equipment which is widely used in chemical and clinical labs all around the world. This apparatus is used to separate two fluids with different densities when rotated at very high speeds.  +
The pea is inserted in one end and rotated. The pea is forced out of the shell and the shel exits out the other end. All by rotating the handle on the side of the pea sheller.  +
This project is for greywater usage and may not meet clean drinking water standards. (not potable water)  +
The openscad project is set to print a 1 cup measuring cup, but can be easily scaled to any practical size for cooking.  +
Designed in response to a request for Medical Tweezers from Field Ready. This is a versatile design for Medical Tweezers as it's designed in openSCAD to be customized to the user's desire, such as number or teeth, grip points, space between each grip, size of the tip, and etc  +
This OSAT is a Micro Lathe. It uses an open source three jaw, self centering chuck. The frame, while in Beta, is nearly parametric in order to scale to the supplies the end user has on hand, and can be altered to meet their needs.  +
This micro water turbine can be paired with a DC generator for power generation applications. The micro design allows for the turbine to be extremely portable and light weight, allowing for power to be available to remote areas.  +
This is a cross-flow turbine, essentially a water wheel turned by naturally flowing water to produce energy. Unlike a dam, or a mill wheel this is very small, more used in smaller streams and such.  +
This is a cross-flow turbine, basically a water wheel turned by stream to produce energy. This would used in developing areas around the world because it is much cheaper and less time consuming to make. The material cost of this turbine itself is significantly reduced using 3D-printing.  +
The mineral sifter is an excellent example of OSAT. Sifters are a major time saver, especially in developing countries where simple appliances are difficult to come by. This sifter can be used in a variety of different ways ranging from cooking to gardening.  +
Minnow traps can be essential for collecting your own bait when none is available to purchase and are relatively inexpensive to purchase. This a 3D printable version for areas where the device is unavailable to purchase.  +
Preliminary design page for [[Micro Lathe]]  +
This is a mobilization wedge used by physical therapists to perform manual spinal mobilization techniques and other various exercises. The tool size is 2" X 7" X 4".  +
The idea of combining a spoon with a fork has existed for years now. For certain situations, this innovation can be more efficient (for example, on camping trips).  +
Modified cap for turning two-liter bottle into sharps disposal container  +
The posts are of a modular design, and can be built up to allow for more coral to be placed on a single vertical post. The rods slide through the post, and with string tied to the holes on each rod, are tied to the coral so it doesn't move. A weight is tied to the lowest rod in order to keep the vertical posts in place and prevent them from floating.  +
PC104 stacks are commonly used in automation and controls applications which could be a potentially hazardous environment for sensitive electronics  +
The modular pegboard is designed to replace more costly methods of tool storage. This pegboard can be used to expand an existing pegboard since it will work with standard 1/8 inch pegboard attachments.  +
A shovel helper grip attachment could save a lot of effort by transferring some of the load from the user's back to the well gripped other hand. This in-turn results into lesser fatigue and more productivity. Also, the Leaf Claws attachment can function as a big sized leaf collector hand or as even a shovel for damp yards.  +
Preliminary design page for [[Modular hand held arm with "Backsaver" grip attachment and "Leaf Claws"]]  +
With this tool and a skilled user, many fires could be started much quicker and the user would have no blisters. The scad file can be customized for most sticks, and rope can be hand woven from plant fiber. Picture of completed print coming soon. The above image is from the inspiration video.  +
A monochromator is a device which takes light and transmits it to into a narrow band of wavelengths. Using a form of mechanical filtering (diffraction) the user is able to select a specific wavelength (color) which would exit through a exit slit. The monochromator holds many scientific applications ranging from measuring a reflected or transmitted light off a surface.  +
This product is complete and it functions as a negative probe holder.  +
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This is meant to be used by EMT or other first responders for immobilizing a head and neck after major trauma, keeping the head steady during transport. All that is needed for this device is a 3D printer, and straps  +
This design was created to be used anywhere with a semi-flat surface and by a significantly larger range of people. This project uses plastic and a open-source 3D printer and software.  +
Fulfills need to turn waste newspaper and other light paper products into small burnable briquettes. This helps to turn waste in to a usable fuel source, and also allows the paper to burn much longer and more efficiently than just burning the unprocessed paper.  +
The project is a part of the 3D printable bike goal, offered by Dr. John Gershenson.  +
This megaphone is OSAT appropriate because there are practical uses for such a device in developing countries. A few examples would be alerting others to danger, or speaking to a crowd of people, or cheering during a sports match.  +
This nutcracker is fully made with a 3D printer. Designed for high volume processing of a variety of nuts.  +
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The treadle pump is a lift pump designed to irrigate small plots of land. Treadle pumps are designed to be operated by the farmer or hand in a "stair stepper" type motion to lift water from a depth of not over seven meters.  +
This is a 3D printed finger splint used for immobilizing fingers to facilitate healing. Within the medical field, studies have been found that 3D printed casts or braces allow a patient to heal faster compared to conventional braces.  +
The 3-D Printed Hand Pump is an OSAT that allows liquid to be pumped from a reservoir to a container. Hand pumps are needed in across the globe for the distribution of water, oil, and other liquids.  +
The pedal is intended as usable substitute for a factory bike pedal, though not totally equivalent.  +
This OSAT project is appropriate for countries where bikes are heavily relied on and cheap spare parts are helpful and necessary.  +
This provides a cheap alternative for either single use or could be used to make a big jump rope for 3+ people at a time.  +
A Wind turbine bade  +
Proper growth of infants and young children is paramount to the development of well-functioning adults. Infantometers can be used to measure the height of infants and small children to gauge the physical growth during the early stages of life.  +
This toilet paper holder is an appropriate technology because it allows people in developing countries to store and use their toilet paper cleanly. The pole can be used to store rolls of toilet paper vertically, and then the actual holder on top will hold the toilet paper as it is dispensed.  +
First, this will be useful in education, where protractors can be used to help teach geometric concepts. Additionally, they can be used in construction to make sure angle measurements are made accurately.  +
This is appropriate both for and as a game to teach young children between the ages of 4-9 how to follow rules, how to recognize and apply knowledge of numbers, and how to critically think.  +
This OSAT project was created to assist the senior capstone project for the Open Source Hardware Enterprise, OSHE Growbot. The parts designed are used in conjunction with Drew Vincent's, motor mounts for the Growbot. The Growbot project can be used to fulfill the OSAT 'Zero Hunger' goal.  +
This project is for the Growbot project by the Open Source Hardware Enterprise at Michigan Tech. The Growbot aims to provide an open source solution to home gardening by taking the guesswork out of growing plants and allowing the user to go about other daily tasks. The OSAT goal that this project is addressing is Zero Hunger.  +
High Temperature 3D Printer  +
The ratchet is a fairly common tool in today's world. A major advantage of a ratchet is that many tool attachments can be put on the ratchet to perform many different functions.  +
My design uses a 3D printable pump to allow the user to pump the water out. This has several advantages. It allows better control of the amount of water being used and therefore has the potential to decrease water usage meaning that you will need to fill your bucket less often.  +
This project is an attempt to create a simple bicycle brake for the open source community. This brake relies on minimal hardware and uses scrap rubber for the brake pad material.  +
This project was intended to remove soldering fumes from the air.  +
Monochromators are used in optics to isolate certain wavelengths from a light source made up of many wavelengths  +
This tool head once complete will be the first Lulzbot compatible FPF-style extruder assembly.  +
Rope pumps are an incredibly easy and cost effective way of raising water to the surface. The main hindrance is the valves that go on the rope. This 3D design cuts down production materials, energy and cost.  +
The project has been expanded to convert all designs of the salt spay chamber to open source design.  +
Wolves are a problem with reindeer husbandry. This 3D-printed ultrasonic whistle is a cheap method to be used as a wolf preventative.  +
It has the ability to cultivate and aerate soil. This tool can also dig out weeds in farms. Low cost and customizable.  +
This is the creation of a utensil that can be easily printed by a 3D printer anywhere around the world. Our wish at project spork is to enable all to have a clean and convenient eating experience.  +
The retractors were designed to help pull open wounds or surgical openings for operations, while being modular for operator usage. Not only can they be quickly printed, but one end is ergonomically fitted for a gloved finger to pull without slippage.  +
Nitrate, the most oxidized form of nitrogen, is regulated to protect people and animals from harmful levels as there is a large over abundance due to anthropogenic factors. The leading certified method to detect and quantify nitrate, demands the use of a toxic heavy metal. An alternative eliminates this problem but requires an expensive proprietary spectrophotometer. The development of an inexpensive portable, handheld photometer will greatly expedite field nitrate analysis to combat pollution.  +
The combination of open-source software and hardware provide technically feasible methods to create low-cost, highly-customized scientific research equipment.  +
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These shredders allow the use of the cut PET to be used in things like crafts and possibly for printing purposes.  +
This page gives examples of equations and calculations used in parabolic shape applications.  +
This device could be used to protect from animals and have a more sanitary place to put items like spices, pills, or any other small valuable object.  +
Arm injuries are a very common occurrence, especially with children and younger adults that are working in manual labor  +
Buckles are very useful and found on a wide variety of items; however, if one breaks, it is hard to find a cheap replacement. Since buckle sizes vary depending on the application, I made a fully parametric OpenSCAD design.  +
Passive solar design is a way to heat houses (mainly) utilizing the sun's heat without operable devices. Passive solar design may often be confused with passive house, thought they are different. There are three main types of passive solar design that include: direct gain, indirect gain, and isolated systems. This page describes all of these aspects and other key design techniques that are important and affect the effectiveness of passive solar design within a building.  +
This hand powered machine is a food processing tool that will grind peanuts down so they can be made into peanut butter. This entire mill is 3D printed and was designed with all open source technology.  +
This research on small wind energy systems for battery charging is the result of a collaborative effort involving numerous contributors.  +
This is a parametric FreeCAD model that can be adapted to a variety of threaded or unthreaded pharmaceutical pill/medication bottles.  +
A grid tied solar photovoltaic and thermal heating system was installed at a home in Arcata, CA which uses a heat recovery system to heat the home (that includes an expansion tank). Radiant floor heating was installed and heats the floor using hot water in pipes beneath the floor's surface. A solar pathfinder was used to help identify where shading may effect the solar panels efficiency.  +
This page describes what photovoltaics is, how it works, the different components necessary in a photovoltaic system and their importances, the advancements of photovoltaic technology and pros and cons associated with photovoltaics.  +
We propose the use of picoHydro power systems in Guatemala and Honduras to meet rural electricity demands, cleanly and efficiently. Specifically we've developed tools that can be used to easily convert a car alternator into an electric generator for a picoHydro system.  +
The goal is to construct a piezoelectric energy harvesting device that can generate enough energy to create a noticeable charge in a battery.  +
To allow people in poverty to have decent eyesight, thus able to read, learn, travel and work better.  +
Makeshift water piping has been a massive undertaking in Nepal especially where an earthquake devastated the area a year ago. Organizations such as Field Ready are hard at work making sure water supply systems in the area are sanitary and helpful for those who need it. The T-fitting module was specifically requested by Field Ready  +
This carousel keeps medical and lab pipettes suspended so as not to contaminate both the area around the and the samples inside them clean and safe.  +
Wrenches are a universal necessity, especially in developing countries where buying something new, rather than repairing something, is seldom an option. In addition to this, this wrench is small and cheap to make.  +
A pointer trowel is used in masonry to fill in joints. It has an angled, pointed end that can be used to get mortar into tight spaces. The trowel is a simple design that can be easily changed through it's FreeCAD file and it is designed to be printed without the use of support material to save plastic  +
This design is a 3D printed potato ricer. Potato ricers work by extruding cooked potato (or possibly other starch rich foods) through small holes. This creates a lighter fluffier finished product than conventional mashing.  +
Usually, herbs and dried chillies are made into a powdered form using heavy stones for crushing purpose. I have designed a simple but robust grinder which is very cost effective and can be used by anyone for the same purpose.  +
This two piece device allows you to get a firm hold on any type of textile without puncturing them. The first part of the device, which we will call the lock (shown in blue), fits closely into the base, which we will call the star because of its resemblance to a ninja throwing star (shown in red).  +
The pruning hook saves time so the farmers do not have to climb the trees with machetes. This 3D printed pruning hook is meant to be attached to the end of a long wooden pole.  +
This OSAT is a heavy-duty rope pulley that can be used to raise water from a well. This pulley can be customized to any desired size, and can be paired with multiples of itself to further increase mechanical advantage.  +
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While many of the rain water harvesting systems are designed for non-potable purposes, the water can be purified by use of local resources like charcoal, ceramic/clay pots and cotton sleeves.  +
The rain chain directs the water down the chain from the spout and can be collected into a bucket or place where a puddle is okay to form. This is used as an alternative to a downspout. They were originally created in Japan but many home owners prefer these over downspouts because of the look.  +
This device collects rain water in a water bottle or any container that has standard bottle threads. It includes a purge container that collects the initial dirty rain water.  +
Design and install a safe, easy to use and maintainable rain water catchment system.  +
This OSAT project is the design and prototyping of a hydraulic ram pump. This pump features no motorized parts and can be left unattended for extended duration with minimal upkeep.  +
The raspberry pi case has been modified to allow attachment of the Raspberry Pi Camera to the adjustable arm, as well as allow it to be mounted directly on the vertical support of the RepRap Athena.  +
This project is an upgrade on the current Recyclebot v5 cooling section. The previous design uses a top-down approach at cooling off the filament post extrusion, this was rather annoying to initially feed the filament through.  +
The main goal of this project is to be able to make a robust, self correcting filament extruder to be used to work with any filament or recycled plastic-type feedstock into the system.  +
solar water heater  +
The Chicken Coop project's objective was to house and protect poulty that may be owned by the school.  +
The purpose of this project is to replace the current play structure at the Redwood Coast Montessori School (RCMS) and the Manila Community Center, located in Manila, CA. Redwood Coast Montessori is a school with 80 students that range from Kindergarten-Six grade.  +
The objective is to implement a functional solar powered system that educates the students and staff of Redwood Coast Montessori, as well as the public, of solar power, solar panels, and the importance of solar as a renewable energy.  +
The objective of this project is to design and build a functional Brachistochrone exhibit and present the concept in a fun and educational method; while maintaining a sturdy, child-safe structure that is both aesthetically pleasing and engaging.  +
This site compares different types of reflective materials that can be used to build a Papasan Chair Solar Cooker.  +
Snaffles, or more commonly referred to bits, are the metal pieces that riders use to give commands to their mount. This design is the first step toward a completely modular snaffle set for both horses and reindeer.  +
A stand allows the back wheel of a bike to spin freely (usually used for indoor exercise) supports a bike that powers a generator. The generated energy (actually it is converted) is stored in a battery and used on electrical devices of an appropriate voltage.  +
The aim of this Technical Brief is to create awareness of a successful method of “run off rain water harvesting” which can be effectively used by resource poor farming households, to overcome the hardships of nature.  +
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The desk must be sturdy and include a large work surface to accommodate various art projects. The inclusion of up-cycled materials in the base design of the desk was mandatory for this assignment.  +
This object was created using FreeCAD for the use of the Principia College Science Department. Its initial use is for their optics lab. One of their power strips is connected to various sensitive light equipment.  +
This OSAT design is an economic alternative for a cam cleat. Basic cam cleat designs are utilized for many functions. They are typically used as a quick release and locking mechanism for ropes and chords.  +
I developed this saline water filter for the obvious reason of converting water from the ocean into potable drinking water for those without access to it. The concept behind the filter is extremely simple; Using solar energy in the form of sunlight to evaporate and then collect the fresh water.  +
This Open Source 3D sample rotator accepts a variety of tube sizes and mixes them horizontally, vertically, or any position in between. Changing the mixing angle is easy simply turn the rotisserie. No tools are required.  +
Team BALM built a Solar Food Dehydrator for the Sanctuary, a non-profit organization located in Arcata California.  +
I wanted a simple design of a screw driver that also allows the storage of bits in the design.  +
This is a scrub brush for cleaning what ever it is that needs a little elbow grease. It costs a fraction of commercially available scrub brushes. In less developed regions cleaning tools such as a scrub brush are indispensable. This brush is also customizable allowing any size brush to be made easily for any application. It is printed using a bridging technique.  +
A bike seat is a simple, but necessary part of a bike that holds most of the weight of the biker. In many developing countries, biking is the most common mode of transport. Additionally, a mud flap is important for keeping the rider clean, especially during rainy seasons.  +
In the most basic form, a seed drill is a device that will position seeds in soil, without waste. This idea was an improvement over sowing seeds, where soil was tilled and seeds were thrown over the dirt.  +
This design can fit any 2L bottle and can be scales down to fit other size bottles. This takes an old 2L pop bottle and turns it into a seed spreader/shaker. With the handle and easy to use adjuster, it is easy to control the flow of whatever you are spreading.  +
This equipment can be used to sow seeds with relative ease, compared to hand sowing. This product was designed for minimum number of parts and low weight.  +
This Stake has been designed to serve as a semi-permanent connection between earth and man made shelter. My design creates an inexpensive alternative to classic stakes. My design creates a better hold and can be made in less than two hours!  +
The proposed design demonstrates two innovations: the use of cloth filtration bags to contain the filtration media - the ease of removal of the bags simplifies regular cleaning and permits simple modification of filters as seasonal conditions dictate.  +
This project seeks to design a 3D printed mold in PLA to cast a silicone based hot end, into which a nichrome wire can be inserted as a heating element.  +
This tool removes all guess work out of determining canopy cover, which is a very useful metric for foresters and construction companies looking to predict how much foliage and tree removal must be done in an specified area.  +
The Human Sundial is a platform, where students can learn by interacting with the sundial on a regular basis watching their shadow change from each time and month in the year. The sundial emphasizes how the sun changes position in declination angle from each month in the year.  +
An otoscope is a medical instrument or device used to examine of the eardrum and the passage of the outer ear, which can be dificult to see to the naked eye. From an otoscope a medical professional or health care provider can diagnose or recognize ear infections, fluid in the ears, tearing of the eardrum and more.  +
This project consists of multiple components that can be assembled into a full scale snow shovel. Some commercial shovels are very expensive, and their only purpose is to pick up snow and place it somewhere else.  +
This shovel was designed to be a tool that can be fully modulated for the users current needs and environment. Shovels are used everywhere and are almost a necessity if moving large amounts of something dirt like. This shovel can be fully 3D printed if necessary.  +
This allows for easier movement across powdered snow, without taking a lot of effort to pull your foot out of knee deep snow with every step.  +
Making soil blocks requires a soil block maker, or blocker. The blocker compacts soil into plugs that come with a preformed depression for placing your seeds. Getting your plants off to a good start has never been easier!  +
The basic idea is to convert an older non-working gas mower into an electric powered mower by replacing the gas engine with an electric motor that runs from a 12 volt battery.  +
The primary goal of this AT project is to consolidate existing information on solar cooking, as well as evaluate materials and design techniques utilized for the construction of the popular solar box cooker model.  +
The goals of this project are to dry fruit in a sustainable manner using appropriate technology.  +
A solar hot water heater was installed at a location on Haeger Avenue in Arcata, CA. This is a closed loop system with a storage tank that has a drain-back gravity feed unit.  +
Simple hydro-thermal system experiment  +
This page gives a list of websites that offer solar irradiation data at one hour increments or finer resolution.  +
Information regarding solar lighting (know how and types)  +
low-cost solar-heated lumber dryer, essentially free of dependency on fossil fuels for energy.  +
This page gives a list of solar photovoltaic lectures, curriculum, and material that anyone can use for educational purposes.  +
Using the power of the sun we can power up some speakers with efficient hardware.  +
These maps provide monthly average daily total solar resource information on grid cells of approximately 40 km by 40 km in size.  +
Build a solar batch water heater and install at my residents in La Quinta, California.  +
Solar air heaters are systems that collect solar energy and transfers the heat to passing air, which is either stored or used for space heating.  +
A solar autoclave is a medical device that has a hotter and more highly pressurized chamber that sterilizes medical tools. To accomplish this, water is passively heated by the sun and the hot water is channeled through the chamber to increase the temperature, and hot steam from the heated water is used to increase the pressure inside the chamber. This device is useful in rural places that do not have access to typical autoclaves or experiences intermittent losses of electricity.  +
List of Portable Solar Charged Flashlight Manufacturers  +
Defines what a solar charger is, how it works, and provides a link to a list of solar chargers.  +
A solar funnel is a device that allows light to be reflected to a certain point for the desired purpose. This page suggests different ways to determine the tilt angles of the sides of the solar funnel to get the most desirable outcome.  +
An open looped, solar hot water system was repaired in Humboldt County. Both of the dribble valves were replaced for this repair.  +
Solar powered ice makers can use sunlight to produce the electricity required to power a solar ice maker, or use the sunlight as a catalyst to a chemical reaction to keep an ice maker cool. Solar ice makers can be helpful for disaster relief, refugee camps, developing nations, and camping. This page gives examples of solar ice maker projects.  +
Solar orientation is important for many modern day applications and is dependent on location. There are many aspects that affect solar orientation that should be considered in any application where solar orientation should be a factor.  +
My primary focus is to evaluate current annuity proposals focusing on mostly government retirement programs, military programs, etc to justify that the capital can be invested on solar power plant projects and annuity in this case will far exceed the current value.  +
This page summarizes physical characteristics of commercially available ground mount racking units for solar PV systems.  +
This page provides an example of how to calculate the size of a solar power system based on the amount of energy used by a customer.  +
A solar unit is the solar power striking the earth as a whole averaged throughout the day and throughout the year.  +
A solar wiki provides information on topics such as solar hot water, photovoltaics, solar cookers, solar water disinfection, passive solar design, along with other, more specific topics.  +
The spoke wrench is used to loosen and tighten spokes on bike wheels when trying to true a wheel.  +
This OSAT is a Spoon Fork and Knife Combo. This is an appropriate utensil that gives the developing world the option to no longer eat with their hands. This will stop the spread of disease.  +
This is a Spoon multi-tool that was built using open-source technology. It is appropriate because it takes something relatively important and expensive (20$) range and make it easy to manufacture and cheap.  +
People spend hours in the scorching sun to make sure that they water their crop, and mostly done manually. By 3D printing the design mentioned in this page, it make sure that they can attach the water hose on the tube and crop can be watered.  +
The snowmobile pull starter handle is appropriate for OSAT due to some peoples ability to access various snowmobile parts around the world. It fills the need for people to have to travel to a dealership or OEM dealer and could print the handle, cheaply and at their own convenience.  +
This Stethoscope only requires some surgical tubing or similar airtight tubing and 3D printed parts.  +
A trained professional could get the information they need simply by pressing their ear up against the patient's chest. However, a good stethoscope makes the process both easier and more comfortable.  +
Having 3D printed medical diagnostic equipment could give underprivileged areas cheap and easy access to much needed tools, while also letting these areas save money for more complex equipment that they may not have had access to otherwise.  +
This 3D printable straw filter should allow for cheaper and more readily available access to clean water at a lower price as most of the components of a water filter are things we come across every day.  +
An umbrella is a mighty appropriate tool in Humboldt County, as is a cooker that utilizes a clean renewable resource. Thus, we decided to combine the two to make an incredible apparatus: an umbrella in the rain, a solar cooker in the Sun... a Sunbrella!  +
Building a garden at Sunny Brae Middle School is one step towards creating an experiential learning facility designed to educate middle school kids about sustainable agriculture  +
Yurt. Humboldt County is rainy in the winter and spring, so designing to withstand weather has been a front-and-center challenge.  +
SunnyBag is a backpack that has solar charging capabilities for DC powered devices such as cell phones. This portable solar charging product is a convenient and sustainable backpack.  +
This design seeks to address the high cost and many variations of complex surgical retractors used today. This design is intended to serve as a potential cheaper replacement for surgeons today, or in locations where sterilization techniques and equipment are not ideal.  +
Surgical retractors are used in order to hold tissue aside while surgery is performed on some underlying bodily structure. Depending on the size and depth of the cavity as well as the area of the body being accessed, different retracting implements as well as retractor ring sizes and shapes are needed.  +
T
This part solves the problem of making very thin cuts on a table saw in a safe way. All current push sticks or push blocks on the market do not allow for cuts under 1/2" while still maintaining the guards over the saw blade. This push stick rides on the fence of the saw and allows for a safer cut and makes smaller cuts possible without ruining the user's push stick.  +
Talbot water taps are used extensively throughout the low income countries of the world. This type of tap is extremely useful for them, but is often quite expensive to purchase; sometimes so expensive that they can't get them. This type of tap allows for automatic shutoff of the water when it is released due to the water pressure pushing it closed.  +
The only cost for making the tent stake is the cost of the filament, which is about $20 per roll. Rolls are usually 300m and the cost per meter is about 6 cents. Each stake costs about 50 cents.  +
The purpose of this build was to make it easier and more convenient for individuals around the world to construct shelters with the resources available to them. The tent vertex joint accomplishes this by providing a sturdy point to join multiple poles for constructing a tent.  +
The Rainbow Hostel wants to serve as an example for social sustainability in Golfito, Costa Rica so they installed a solar system with battery backup.  +
This is a Thermal Generator to charge a cell phone made for Engineering 371 atHumboldt State University  +
The goal of the project was to build inexpensive thermoelectric modules to be in used in small, easy-to-make, and portable cooling machines  +
UNICEF's supply catalogue is used to acquire commodities to respond to the needs of children and their families worldwide. Following the dimension guidelines set in the catalogue, a 3D model of a thermometer jar was created using OpenScad and then printed used a RepRap Athena Delta Bot printer.  +
This thumb splint for broken or sprained thumbs was designed to be a durable but affordable parametric brace. The design prints in two flat parts requiring three size measurements and thermoforming to customize to wearer's precise hand shape.  +
This is a helpful OSAT project because it will help anyone in the developing world keep any toilet paper off the ground where it could potentially get wet or dirty therefore this is a more sanitary and will waste less toilet paper.  +
A tile leveling system to reduce tile lip when installing large format tiles. The goal of the system is to be easy to use, effective, low cost, and fully editable. If needed, the entire system can be customized for an individuals needs by using the SCAD files inlinked down bellow.  +
This OSAT allows for children's heights to be accurately measured in any environment. Traditional stadiometers are expensive, costing around $159, which can be every expensive in low-income and rural areas.  +
U
This project aims to fill the need for a small item that can be placed in a car, which serves the purpose of clearing snow and large ice from windows.  +
This OpenSource Appropriate Technology used in Manufacturing Umbilical Cord Clamp is one such step in providing a relatively cheap and quick access to the medical devices in developing countries  +
This clip can easily be printed and used for a new born baby. Most clips use a latch to keep shut, by realizing that you can slide an umbilical cord down the channels of my clip you can firmly clip a cord.  +
All rainfall-harvesting systems have three components: a collection area, a conveyance system, and a storage area. In this application, collection and storage is provided within the landscape.  +
All rainfall-harvesting systems have three components: a collection area, a conveyance system, and a storage area. In this application, collection and storage is provided within the landscape.  +
The outcome of the project is a parametric model for universal clip-on for attaching different types of measuring equipment/samplers and their hoses to the harness in proximity of the breathing zone.  +
5Hand guards are often used in snowmobiling to protect the hands against wind, snow, and tree branches.  +
I wanted a filament spooler that was attached to the printer, and that could easily accomodate different types of spools. Most undermounted spoolers available were specific to one brand of filament.  +
A universal, ergonomic handle, and update two tools to interchange easily with a handle.  +
Densiometers are simple tools used by foresters all over the world to roughly estimate the amount of foliage coverage in a certain area of trees.  +
This reduces the smell and pathogens that are present in the toilet. Excess moisture in the toilet creates an anaerobic environment which promotes the growth of smelly bacteria.  +
How to replace alkaline with lithium-ion batteries. For this project, we'll use "18650" Lithium Ion cells, that were harvested from a non-functioning 2007-era laptop.  +
V
This OSAT project is meant to provide utility in sifting for a variety of applications.  +
Our idea is to create a self illuminating LED that is powered by ultravoilet and infrared light. The casing is the power source absorbing infrared and UV light, while remaining transparent to visible light.  +
W
The WAPI uses soybean wax in a clear plastic tube that melts at the water or milt pasteurization temperature, indicating that disease causing organisms are killed.  +
Dried nuts such as walnut are grown in countries like Brazil and India Predominantly. For these small scale farmers, cracking walnut with hand crusher is a tedious task and to overcome the issues of ergonomics and usability, the following walnut cracker is designed.  +
In rural areas of India like Asam, Mizoram, Arunachal pradhesh where it is moist for most of the time of year and very suitable atmosphere for dew formation. This device can eliminate use of water purifier to a certain level.  +
This printable design requires some filament (preferable ABS), a tea bag, and activated carbon to create. This allows the user to drink filtered water on-demand from and standard plastic water or pop bottle.  +
My water bottle stripper is designed to use discarded water bottles to make strong lengths of plastic cordage that can then be used for anything that requires high strength Cord.  +
Water bottle cap modified to turn any water bottle into a sippy cup  +
The project started as a request for a water filtration system for the WaterPod project, and went through a five-stage design process before ending up as the Filter Commander 9000.  +
he Hang Thyme is a hydroponic green wall that is used to grow herbs in minimal amounts of space; utilizing energy readily available in the natural world. Such energies include gravity (drip irrigation system), sunlight, and heat from the sun.  +
The M2-B2 Rocket Stove promotes sustainability through demonstration and education while on the WaterPod in New York City. The stove is designed to provide a reliable and sustainable means of cooking by minimizing fuel use and optimizing efficiency.  +
Design a system that would grow food for the occupants of the barge without the presence of soil.  +
The WindPod Turbine is a vertical axis wind turbine that uses the power of the wind to create energy which is then stored in the 12V battery banks.  +
A simple Roberval measuring scale design that can be adjusted to support different weight multiples. By design, the exact positioning of the masses on the scales does not affect the comparison of weights, unlike a simpler lever-type scale.  +
This cover is for a NEMA 6-50 plug.  +
The aquaponic system cycles water at a rate of 400 gallons per hour, allowing optimal oxygenation for the fish to survive, where the fish provide nutrients for the edible plants to flourish. This design is capable of producing an adequate amount of food for 3 people.  +
Our objective is to design a long lasting desalination system that produces distilled water from the Delaware River for the inhabitants of the barge. The desalination system will promote sustainability through inspirational design and compliment the overall theme of the barge.  +
The Replenish Life Team, Malia Sierra Breeze Gonzales and Neftali Eunice Romero, have created a rainwater catchment system that is intended to provide potable water for two to ten people that will be living on a barge. Jawbreaker uses an intricate spiral design functioning as the catchment system, a first flush diverter for filtration, two different size micron filters, and six 55-gallon drum.  +
This berry picker is designed to fit onto gallon-sized milk jugs. The milk jug is used as the receptacle for the berries and as the handle.  +
This project will help hold a wire that has an inductor on the end to sense a frequency induced wire that is burried under ground. It will be attached to the frame of the robot on the front and can be folded up when not in use.  +
Small and versatile typically block planes are used to facilitate joinery by bringing boards into tolerance with each other, but over all the use of the block plane is only limited by the imagination of the wood worker.  +
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The quick fastener is what secures the plastic body panels to the frame of the snowmobile. They work by inserting them into the prefabed holes in the plastic, push in and turn it 90 degrees clockwise and the spring pushes back and locks it into place.  +
Z
The objective of this project was to build a device that demonstrates how water is transported between two target reservoirs. The Amenders designed an Archimedes Screw that moves water from a low reservoir to a higher reservoir located 3 feet above the ground.  +
The purpose of this project is to create a bicycle powered fan where students in grades 6-8 at Zane Middle School can generate enough energy to levitate an object.  +
The purpose of this project was to work with Zane Middle School representative and P.E. Instructor, Garett Montana, to address the problems of storing and transporting P.E. equipment.  +
The purpose of this project is to design a safe bridge tester system that is able to measure the strength and endurance of bridges under pressure in pounds per square inch.  +
Two separate animal visitation centers were made to create a unique learning environment for students to interact safely with goats and chickens inside the classrooms.  +
The purpose of this project was to create a working camera obscura that would teach students point perspective and allow students to trace the images displayed.  +
The objective of this project was to develop a cost-effective composting system that is durable, educational, and safe for children gardeners to use at Catherine L. Zane Middle School in Eureka, CA  +
The objective of Team Falcon Punch is to create an upcycled disc golf course for the students at Zane Middle school physical education class as well for intermural tournaments. The disc golf course is to be made from weather-proof and recycled materials that can withstand the stress of being handled by students  +
The purpose of this Project is to create a greenhouse for Zane Middle School that will be easily moved from classroom to gardened area.  +
Team Strange was given the opportunity to design and assemble a movable instrument storage compartment for the music department at Zane Middle School  +
The purpose of this project is to create a system to launch multiple paper rockets at once using air pressure.  +
The purpose of this project was to design an outdoor math classroom for our client's representative, Beth Baker, at Catherine Zane Middle School.  +
The Pendulum Wave Machine is a device meant to provide educational value regarding the function of basic wave patterns.  +
The purpose of the project was to replace a failing permeable pathway at Catherine Zane Middle School in Eureka, CA with a functioning permeable pathway.  +
The objective of Team Tonalites was to construct a set of cubbies for a Catherine L. Zane Middle School teacher to help promote safety in the classroom by creating space for students to place their belongings.  +
The green screen was constructed for the students at Zane Middle School.  +
The portable stage was built for our client Zane Middle School to allow their students to become more involved in performance arts while making sure they learn in a fun, positive way.  +
portable teaching station  +
Team GID (Get it Done) was tasked with the building of a probability machine to provide middle school students a hands-on demonstration of the mathematical concepts of probability  +
rainwater catchment system  +
The purpose of this project is to solve the awning drainage problem at Zane Middle School.  +
This project will focus on creating a new portable and durable to clean the recyclables produced by the Zane Middle School's cafeteria. The project was soon to be altered into a more educational, more purposeful, more inspiring project. It was decided through a series of steps that it would be more useful to make the solar station.  +
The goal of the design is to provide a visual aid for the students to learn about the principles of resonance. The design should function as a safe and useful teaching tool.  +
A Shake Table was designed and constructed to imitate earthquake magnitudes to help students at Zane Middle School to better understand seismic activity and allow them to test their own building structures.  +
We worked with Zane Middle School to create a portable charging station that can charge robots, and it can also be used to light up an area at school events.  +
The final decisions for the desk are as follows; the top of the desk will contain a plethora of things, including 2 fidget spinners, a handmade abacus, a long bolt containing some nuts and wingnuts that spin, and some buttons and joysticks taken from a play station 2 controller. The underside of the desk contains a bungee foot swing.  +
This sundial will serve to provide middle school students with an educational activity to emphasize the concept of solar time and the interaction between the sun and the earth in its orbital path.  +
The goal of this project is to design and create designated concrete stepping stone pathways to replace a preexisting rectangle shaped area filled with mulch in front of the school for the students at Zane Middle School in Eureka, California.  +
Six walking pathways are laid out to avoid utility boxes, sprinkler systems, and pillars that are located in the area. The pathways emit out radially from the center to the edges of the triangle. The pathways are made out of urbanite, and are packed together with recycled concrete mix.  +
Team Falcon-Jacks assignment was to create three caddies built from upcycled material for Elizabeth Baker to store school supplies and other school materials that the students utilize  +
The purpose of this project was to create a portable, collapsible, disc golf station primarily from materials diverted from the waste stream.  +
This zero-electricity fridge addresses the issue of people in developing countries not having electricity  +