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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  +
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.  +
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  +
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.  +
Bicycle part  +
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.  +
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.  +
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.  +