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Make: Technology on Your Time Volume 25 by Mark Frauenfelder

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Photography by Amy Parness and Ariel Churi

SOLAR TV REMOTE

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Juice your flipper with sunlight.

By Sparkle Labs

Powering a TV remote with the sun means you won’t have to buy batteries every six months to surf from the sofa. Low-voltage devices that use power only occasionally, like remotes, are good candidates for a solar-powered trickle-charge. Here’s how we modded our remote to live off the sun, using rechargeable batteries connected in parallel with a small solar cell and a diode to keep any power from trickling back out (Figure C).

Fig. C: Wiring ...

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