treehugger.com
27 Apr '12, 3pm
Build a Micro-Hydropower Generator from CDs and Repurposed Printer Parts
For green tinkerers and DIYers, nothing could be sweeter than building something from repurposed materials, except maybe when that something is a teaching tool for kids, especially when it's about renewable energy. This little hydropower project is a nice example of what can be done with some scavenged parts, a little time, and some good old homegrown ingenuity. Instructables member masynmachien said that after staying at a place which generated its own electricity with a water wheel, he was inspired to build his own version in a workshop for kids. The resulting hydropower generator is tiny and powers just a single LED, but is also a potent example of what can be done with discarded tech parts and some imagination. The only new material used in this project was some hot glue, and the rest of the materials were reused, including a small stepper motor from a printer, 2 disca...
Full article:
http://www.treehugger.com/clean-technology/build-micro-hy...