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Instructables.comfrom Instructables.com

Thermoelectric Fan Powered by a Candle

Thermoelectric Fan Powered by a Candle Better writeup than many. Looks good due to heatsink used. A Thermoelectric generator powered by a tealight. It started as an experiment of how much power I could get from one candle. But I liked the idea and it worked really well so I built this electric-mechanical ornament. I did not use a high temperature TEG-module, but instead a cheap TEC-module. That can still handle 200 degrees Celsius which is good enough.

Housing a Forestfrom Housing a Forest

Simple Catapults

Easy Catapults These little wooded catapults are so easy to build, and were also able to use left over wood from another project. Love that! Simply measure and cut a 1 x 4 32″ long and a another piece 3 1/2″ long. Next cut a 2 x 4 to 3 1/2″ long. Once you have all your pieces cut, screw both the 3 1/2″ pieces 8 – 10″ from one end. Done! Now your ready to launch.