Category Archives: peltier unit

The Thermochromic Display You Didn’t Know You Needed

We love unique ways of displaying data here at Hackaday, and this ingenious thermochromic display created by [Moritz v. Sivers] more than fits the bill. Using sheets of color changing liquid crystals and careful temperature control of the plates they’re mounted on, he’s built a giant seven-segment display that can …read more

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Posted in chemistry hacks, environmental sensor, liquid crystal, peltier unit, science, thermochromic | Leave a comment

A Flashlight Powered by Your Hot Little Hands

We are smack-dab in the middle of our Energy Harvesting Challenge, and [wasimashu] might have this one in the palm of his hand. Imagine a compact flashlight that doesn’t need batteries or bulbs. You’d buy a 10-pack and stash them everywhere, right? If there’s nothing that will leak or break or expire in your lifetime, why not have a bunch of them around?

Infinity uses nothing but body heat to power a single white LED. It only needs a five-degree temperature difference between the air and your hand to work, so it should be good in pretty much any environment. …read more

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Posted in boost converter, energy harvesting, human batteries, peltier, peltier unit, The Hackaday Prize | Leave a comment