How I Built My First Electric Bike
My goal was an easy-to-make, low cost electric bike that was both powerful and reliable. Here’s how I did it.
battery
Automated Mindstorms Battery Exchanger for Drones
This Lego Mindstorms robot automatically switches a quadrotor’s battery pack, extending its flying time without the operator having to intervene.
Awesome Photo of an Orange-Slice Battery
Caleb Charland’s awesome photo of his orange-cell battery was taken with a 14-hour exposure.
The Simplest DC Motor in the World?
AA battery + coil of wire + neodymium magnets = DC Motor!
Mass Generator Works as a Gravity Battery
While not terribly practical for outputting large amounts of electricity, this “gravity battery” demonstrated by YouTube guru MrTeslonian shows a fun way of generating electricity. In his video he mentions a 25′ version with a pair of water-filled jugs, and when one jug hits the bottom, a pump is triggered that refills the empty jig […]
Tropical Fruit-Powered Laser
Over at the Maui Makers hackerspace, member Ryan K showed up with a mess of Lilikoi fruit (also known as passion fruit). Using anodized bolts (source of zinc), some thin copper pipe, wire, switches, LEDs, and a capacitor, he built himself a battery from the fruit.
Weekend Projects Gets Extreme With LED Throwies!
Fun, simple, glowing circuits that require mere seconds to assemble. Or take them to the next level, and encase them in an indestructible lantern, float them in a nearby pond, or fly them in the sky!
