Capacitors

Build a Lawnbot 400

Build a Lawnbot 400

I have always hated mowing the lawn. I was the guy who only mowed when the grass got to be 6″ taller than the neighbors’ lawns — not because I don’t like my neighbors, but because mowing was such a pain. After being hit by one too many rocks, I decided I no longer wanted […]

Infinity Light

Infinity Light

Convert your DC motor into a dynamo and use it to generate light without batteries. All you need is some capacitors, a DC motor, diode, wire, gear system and LED. To make it light all you need to do is spin your dynamo.

Reaction Timer

Reaction Timer

Make: Electronics is an electronics primer for the early 21st century. It’s written for the absolute beginner and all those who’ve wanted to learn electronics. Those who’ve wanted to build all the cool kits out there, or to try their hand at programming microcontrollers, but who’ve found themselves intimidated by existing books and online resources […]

Teleclaw: Remote Robot Gripper

Teleclaw: Remote Robot Gripper

It might have been Robots of Saturn that first got my young brain thinking about building a mechanical man. In that obscure 1962 sci-fi adventure novel, Dig Allen and his fellow teenage space explorers transfer their thoughts into the bodies of teleoperated robots to mine Saturn’s dangerous rings for precious Methane-X. Using some of my […]

MintyBoost USB Charger Kit v3.0

MintyBoost USB Charger Kit v3.0

Safely and effectively charge your USB-powered devices when you are away from your computer with this handy charger! Please note: There have been reports that the Minty Boost has issues charging the iPhone 3GS.

ESP/psi Testing Lamp

ESP/psi Testing Lamp

Albert Einstein once wrote that God does not play dice with the universe. To which Niels Bohr (or Enrico Fermi) reportedly replied, “Stop telling God what to do with his dice.” Here’s a mood lamp that expresses these dice as 4 multicolored cubes that blink randomly, with true randomness — not the deterministic, pseudo-random chaos […]

WireFinder 9000

WireFinder 9000

By Christie, Jim, John, and Terry Noe Our dog, Maggie, loves to run around in our big yard. But how do we fence her in? Building a 500-foot fence is expensive and unsightly, so we use an “invisible fence.” This is a buried wire that runs around the edge of our yard. Maggie wears a […]