Below are service learning projects from Engr305 Appropriate Technology, which is a course on appropriate technology at Cal Poly Humboldt taught by instructor Lonny Grafman.
AEF
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AEF food dehydrator
A solar dehydrator to help preserve surplus crops - Error creating thumbnail: File missing
AEF greywater
Greywater system at the CSA, Arcata Educational Farm - Error creating thumbnail: File missing
AEF informational kiosk
An earthen informational kiosk - Error creating thumbnail: File missing
AEF photovoltaic system
Modified off-grid photovoltaic system - Error creating thumbnail: File missing
AEF solar water heater
Improved solar water heating system - Error creating thumbnail: File missing
AEF spiral herb garden
Restored the existing herb spiral
A-B
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Air Ship Air City rooftop greywater filtration
A rooftop greywater filtration system - Error creating thumbnail: File missing
Aleiha's parabolic solar cooker
Parabolic Solar Cooker - Error creating thumbnail: File missing
Amal's ethanol still
A valved reflux ethanol still - Error creating thumbnail: File missing
Arcata Elementary rainwater catchment
A 3000 gallon rainwater catchement system for Arcata Elementary School - Error creating thumbnail: File missing
Backyard Biodigester
A biodigester converting organic waste to a fuel source - Error creating thumbnail: File missing
Bayside Park Farm living roof
garden roof to Bayside's new animal hutch - Error creating thumbnail: File missing
Bayside Park Farm rainwater catchment system
catchment system that collects and stores rainwater for gardening purposes - Error creating thumbnail: File missing
Bayside Park Farm vermicomposting
vermicomposting for bayside farm to make own compost - Error creating thumbnail: File missing
Bike Rodeo bicycle blender
A kid's bike blender for Rio Dell Community Resource Center - Error creating thumbnail: File missing
Bike trailer
A bike trailer from a converted baby stroller - Error creating thumbnail: File missing
Blue ox earthen oven
Blue Ox earthen oven - Error creating thumbnail: File missing
Bottoms strawbale earthen plaster
Earthen plaster and natural paint recipes
CCAT
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CCAT bike blender 2015
Bike that supplies mechanical power to blender - Error creating thumbnail: File missing
CCAT bike powered tools
Bike that supplies electricity for power tools - Error creating thumbnail: File missing
CCAT Clay-straw slip wall
Clay-straw slip wall of CCAT's Greenshed - Error creating thumbnail: File missing
CCAT clothes drying
Efficient clothes drying system for CCAT - Error creating thumbnail: File missing
CCAT Cold Box
An energy efficient solution to a refrigerator - Error creating thumbnail: File missing
CCAT Compost System
CCAT's comprehensive composting system - Error creating thumbnail: File missing
CCAT DIY solar suitcase
A do-it-yourself solar suitcase from CCAT - Error creating thumbnail: File missing
CCAT earthbag garden terrace
An earthbag terrace at CCAT - Error creating thumbnail: File missing
CCAT greenhouse natural wall
An aesthetically pleasing natural earthen wall built by clay and straw slip methods - Error creating thumbnail: File missing
CCAT greenhouse rainwater catchment
Greenhouse Rainwater Catchment System at CCAT - Error creating thumbnail: File missing
CCAT greenshed cob wall
Cob wall of CCAT's Greenshed - Error creating thumbnail: File missing
CCAT greenshed north wall
Cordwood and mortar wall of CCAT's Greenshed - Error creating thumbnail: File missing
CCAT greenshed solar lighting 2015
CCAT lighting improvement to greenshed - Error creating thumbnail: File missing
CCAT greenshed west wall
Clay-straw slip wall of CCAT's Greenshed - Error creating thumbnail: File missing
CCAT greywater 2017
Greywater pump at CCAT - Error creating thumbnail: File missing
CCAT greywater marsh (2008)
CCAT's Greywater Marsh 2008 - Error creating thumbnail: File missing
CCAT greywater marsh (current)
CCAT Greywater Marsh Continued - Error creating thumbnail: File missing
CCAT interpretive wind turbine display
Demonstration wind turbine - Error creating thumbnail: File missing
CCAT's living roof
Replacing CCAT's living roof - Error creating thumbnail: File missing
CCAT MEOW 2012
Refurbishment of CCAT's Mobile Energy Operation Wagon - Error creating thumbnail: File missing
CCAT MEOW 2015
Refurbishment of CCAT's Batteries for Mobile Energy system - Error creating thumbnail: File missing
CCAT MEOW 2019
Pedal bike used for Pedaling for power" - Error creating thumbnail: File missing
CCAT natural concrete stain
Natural concrete stain - Error creating thumbnail: File missing
CCAT natural paints 2017
Mural at CCAT using natural paints - Error creating thumbnail: File missing
CCAT natural paint project
Interior paints from natural ingredients - Error creating thumbnail: File missing
CCAT natural wall construction
Earthen informational kiosk for CCAT - Error creating thumbnail: File missing
CCAT outdoor solar heated wash station
A Passive Solar Heated Wash Station at CCAT - Error creating thumbnail: File missing
CCAT pedal powered grain mill
Pedal powered grain mill for CCAT - Error creating thumbnail: File missing
CCAT pedal powered TV
Updated version of CCAT pedal powered bicycle - Error creating thumbnail: File missing
CCAT rainwater catchment system
CCAT's current rainwater catchment system - Error creating thumbnail: File missing
CCAT rainwater catchment system
Rainwater Catchment System at CCAT - Error creating thumbnail: File missing
CCAT Raised Garden Beds
Controlled beds of soil above toxic ground - Error creating thumbnail: File missing
CCAT remediation zone
A stable slope for planting and attracting beneficial insects - Error creating thumbnail: File missing
CCAT Retaining Wall
Retaining wall for slope erosion at CCAT - Error creating thumbnail: File missing
CCAT rocket mass cobb bench heater
A Rocket Mass Cobb Bench Heater - Error creating thumbnail: File missing
CCAT rocket stove
CCAT's improved fuel rocket stove - Error creating thumbnail: File missing
CCAT Small Pond Revitalization
A small pond with a solar aerator at CCAT - Error creating thumbnail: File missing
CCAT small rainwater catchment
A Small Rainwater Catchment System at CCAT - Error creating thumbnail: File missing
CCAT small rainwater catchment
Rainwater catchment for CCAT's cob bench roof - CCAT solar stereo system.jpg
CCAT solar stereo system
A portable solar stereo system at CCAT - Error creating thumbnail: File missing
CCAT southside rainwater catchment
A rainwater catchment system for the southside of CCAT - Error creating thumbnail: File missing
CCAT's Vermicomposting Bin
CCAT's vermicomposting bin - Error creating thumbnail: File missing
CCAT vertical garden
CCAT's Vertical Garden integration for sustainable plant growing - Error creating thumbnail: File missing
CCAT yurt roof 2019
A Yurt Roof at CCAT
C-F
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Chris's ENGR305 Solar Food Dehydrator
A hybrid, solar food dehydrator - Error creating thumbnail: File missing
Compressed earth brick press
An exploration of compressed earth bricks - Error creating thumbnail: File missing
Cooperation Humboldt potato tower
A Vertical Garden Used For Growing Potatoes - Error creating thumbnail: File missing
Deidre's vertical vegetable garden
Solar powered vertical vegetable garden - Error creating thumbnail: File missing
Devan's vertical axis wind turbine
Experimental Vertical Axis Wind Turbine - Error creating thumbnail: File missing
Emily small aquaponic system
micro-aquaponic system to grow personal vegetables/fruit - Error creating thumbnail: File missing
Engr305 peanut sheller project
Peanut sheller made from clay and newspaper - Error creating thumbnail: File missing
Engr305 pulser pump
A Labeled Pulser Pump - Error creating thumbnail: File missing
Engr305 pulser pump
A working model of a Pulser pump - Error creating thumbnail: File missing
Engr 305 solar learning station
Instructional Solar Learning Station - Error creating thumbnail: File missing
ENGR305 windbelt
Testing new materials for prototype windbelts - Error creating thumbnail: File missing
Ethanol from organic sugar beets versus refined cane sugar
Determining the cost inputs and energy outputs of small scale ethanol production
G-O
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HCOE bike power classroom
A Bike Powered Blender - Error creating thumbnail: File missing
HBCSL cobb oven
A cobb oven for the Humboldt Bay Center for Sustainable Living - Error creating thumbnail: File missing
HBCSL solar shower
A solar shower for the Humboldt Bay Center for Sustainable Living - Error creating thumbnail: File missing
HSU solar suitcase
A Solar Suitcase - Error creating thumbnail: File missing
Jefferson Community Center compost
A large composting system for Jefferson School - Error creating thumbnail: File missing
Jefferson Community Center E305 teach-in
A vermicomposting workshop - Error creating thumbnail: File missing
Jefferson Community Center edible landscape
Garden Beds in the Edible Landscape - Error creating thumbnail: File missing
Jefferson Community Center native landscaping 2017
Native Landscaping at the Jefferson Community Center - Error creating thumbnail: File missing
Kiva's straw bale greenhouse
A straw-bale greenhouse - Error creating thumbnail: File missing
Loleta Elementary rainwater
Rainwater Catchment System at Loleta Elementary - Error creating thumbnail: File missing
M Street Eureka rainwater catchment
A rainwater catchment system for residential property - Error creating thumbnail: File missing
Mattole Community Center rainwater catchment
A rainwater catchment from the roof of the Mattole Valley Community Center in Petrolia - Error creating thumbnail: File missing
Millcreek greywater
A residential greywater processor - Error creating thumbnail: File missing
Old Growth Cellar rainwater catchment
A rainwater catchment system for Old Growth Cellars
P-S
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Papasan Chair Solar Cooker
A solar cooker and chair when not in use - Error creating thumbnail: File missing
Parabolic basket and tin can solar cooker
Solar cooker out of local invasive species and waste materials - Error creating thumbnail: File missing
Plastering CCAT Earthbag Terrace
A sturdy, natural plaster covering to the EarthBag gardening terrace being built in front of CCAT - Error creating thumbnail: File missing
Rocket stove biomass charcoal
Use of biomass waste charcoal briquettes for rocket stove - Error creating thumbnail: File missing
Rowan's portable pedal power generator
A pedal power generator - Error creating thumbnail: File missing
SALIRAJA Yurt Project
A Yurt Roof Composed of Old Cans - Error creating thumbnail: File missing
Small greenhouse rainwater catchment
A rainwater catchment system for a greenhouse - Error creating thumbnail: File missing
Solar Charged Lawnmower
An electric lawnmower that utilizes solar power as an energy source - Error creating thumbnail: File missing
Solar heating box
A passive solar heating box - Error creating thumbnail: File missing
Stanley and Kristi's eco-friendly carboard furniture
Furniture made from cardboard - Error creating thumbnail: File missing
Sunbrella
An umbrella in the rain, a solar cooker in the Sun - Error creating thumbnail: File missing
Sunny Brae Middle School Garden
A garden at Sunny Brae Middle School - Error creating thumbnail: File missing
Sunny Brae rainwater catchment system
A residential rainwater catchment system
T-Z
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Treadmill-a-volt treadmill powered charging
Treadmill power for the Humboldt Bay Center for Sustainable Living - Error creating thumbnail: File missing
Troubleshooting the AEF photovoltaic system
Troubleshooting, repairing, testing and maintaining a preexisting off-grid photovoltaic system - Error creating thumbnail: File missing
Tule Fog Farm Grassfed Shed
An indoor space for pigs and goats that also restores a previous brownfield while improving the overall natural landscape - Error creating thumbnail: File missing
Umbrella solar cooker
A multi-use solar cooker - Error creating thumbnail: File missing
Wild Chick Farm
A commercial pastured chicken operation in Arcata, California
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