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in sustainability, appropriate technology and poverty reduction.

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Windmillprint-crop.jpg Yes it is possible to print a windmill with a 3D printer for a fraction of the cost of manufacturing one conventionaly. Learn more about open-source 3-D printing of open source appropriate technology for sustainable development.


CCAT natural paint project
CCAT natural paint project. The Campus Center for Appropriate Technology (CCAT) at Humboldt State University in Arcata, CaliforniaW is completely remodeling the inside of their building. When all of the construction is finished the entire interior of the house will need to be painted. As an ENGR 305 project, Spring 2007, Andrea Lanctot and Jill Anderson have decided to make all the interior paints from scratch using safe natural ingredients.

The project has four main goals. The first is to research natural paint ingredients, recipes, and techniques. The second is to make several of the recipes and test the paints for color, durability, and texture. The third is to choose paints from the tests for the new CCAT house and apply them to the interior. The last goal is to test the final application with the test of time. See natural paint basics for background research on ingredients, types and advantages/disadvantages of natural paint.

FBP Nutsy

Nutsy, the modified Universal Nut Sheller for home use.

Albert Einstein
Out of clutter, find simplicity. From discord, find harmony. In the middle of difficulty lies opportunity.

Albert EinsteinW
Aleiha's parabolic solar cooker
In physics, energy is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems. Since work is defined as a force acting through a distance (a length of space), energy is always equivalent to the ability to exert pulls or pushes against the basic forces of nature, along a path of a certain length.

Sustainable energy is the provision of energy that meets the needs of the present without compromising the ability of future generations to meet their needs. Sustainable energy sources are most often regarded as including all renewable energy sources, such as hydroelectricity, solar energy and power, wind power, wave power, geothermal energy and power, biomass fuel and energy, and tidal power. It usually also includes technologies that improve energy efficiency.

While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas, where energy is often crucial in human development. As of 2011, small solar photovoltaic (PV) systems provide electricity to a few million households, and micro-hydro configured into mini-grids serves many more. Over 44 million households use biogas made in household-scale digesters for lighting and/or cooking, and more than 166 million households rely on a new generation of more-efficient biomass cookstoves.

edit  watch  Selected service learning Projects gallery (refresh)

Engr305 Appropriate Technology Projects: Below are selected service learning projects from Engr305 Appropriate Technology, which is a course on appropriate technology at Humboldt State University taught by instructor Lonny Grafman.

HBCSL cobb oven

A cobb oven for the Humboldt Bay Center for Sustainable Living  
HBCSL solar shower

A solar shower for the Humboldt Bay Center for Sustainable Living  
Jefferson Community Center compost

A large composting system for Jefferson School  
Jefferson Community Center E305 teach-in

A vermicomposting workshop  
Kiva's straw bale greenhouse

A straw-bale greenhouse  
M Street Eureka rainwater catchment

A rainwater catchment system for residential property  
Mattole Community Center rainwater catchment

A rainwater catchment from the roof of the Mattole Valley Community Center in Petrolia  
Millcreek greywater

A residential greywater processor  
Old Growth Cellar rainwater catchment

A rainwater catchment system for Old Growth Cellars  

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  4. CCAT Solar Charging Station
  5. Small-scale wind turbine
  6. Low force buckles and snaps for easy assembly/dis-assembly of mating parts
  7. The Haus of Greenery
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