This instructable will take you through the steps necessary to create your own temperature controlled fan using an old computer fan. The materials that you will need are listed below.1 x 12VDC computer Fan ($7.00 from Amazon)1 x 120V / 12.6 V Transformer ($5.49 from radio shack) 1 x Arduino Uno Microcontroller1 x NPN MOSFET (IRF520 Power MOSFET)1 x Arduino Temperature Sensor5 x Diode (found in unused electronics around the house)1 x Outlet Connector (found in old electronics) WireWire…
Urine diverting composting toilet made from 2 buckets. Maybe add some vents and computer fans to help dry out solids? I like this article about how to construct but I'm not sure how a woman is supposed to use the urine divert-er.
Fashioned CPU Heatsink Cooler Master CPU Fan Desktop Computer Fan
Earthtubes (earthtubing) are a most highly recommended low-tech, sustainable, non-electric, zero-energy, geothermal passive solar heating and solar cooling system. Earth tubes can be non-electric or with small fan assist