Fresh hacks every day
This project is in one of our favorite categories; the kind where asking “why?” is the wrong question. [Berto A.] built the device after observing some power generation by placing a large magnet next to a mechanical relay coil and quickly clicking the relay’s lever. From this humble beginning he built up the RattleGen, a bicycle spoke driven generator.… Read the rest
Here’s a thermoelectric generator which [x2Jiggy] built. The concept uses heat from a flame, biased against cooler temperatures produced by that huge heat sink making up the top portion of the build to produce electricity via the Peltier effect.
The build is passively cooled, using a sync assembly that takes advantage of heat pipes to help increase the heat dissipation. … Read the rest
This is the control and monitoring hardware which [Jack] built for his campfire electricity generator. He’s done an amazing job to get this far. You can see he’s pulling 1 Amp at 14.2 Volts off of the system. But there one gotcha that’s still plaguing him.
The rig uses a big metal plate as a heat sink over the … Read the rest
We’re not really interested in building a dummy load like this one for ourselves. But the concepts behind its design make for a nice little mental exercise as you read your way through the build description. [Pabr] wanted to build a dummy load which could be used to test a cheaply made gas generator. He wanted it to be as … Read the rest
It seems like tinkerers are always being tapped to build or repair exhibit hardware. This time around it’s [Dino's] turn. He’s been asked to alter a light bulb efficiency demo so that it includes an LED option.
The idea here is that you crank a generator to power different types of light bulbs. There’s an ammeter built in, but … Read the rest
[Niklas Roy] is at it again. He’s applying wind power to his projects by using umbrellas. He was inspired by the shape of an anemometer, and umbrellas turned out to be a great choice because they’re cheap and easy to find.
Anemometers measure wind speed by capturing it with egg-shaped sails (in fact, we’ve seen them built from plastic … Read the rest
Sure, it’s probably a gimmick to [Jon Masters], but we absolutely love the pedal-powered server he built using a group of ARM chips. [Jon] is an engineer at Red Hat and put together the project in order to show off the potential of the low-power ARM offerings.
The platform is a quad-core Calxeda EnergyCore ARM SoC. Each chip draws … Read the rest
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