This is an easy-to-build simple solar engine, also known as a Trimmet. We will construct a direct-drive type (as opposed to a voltage-triggered) spinner that will really go nowhere fast in direct sunlight. Perfect for windowsills and desktops that get a lot of old Sol’s rays. Many different styles are possible, but this is a […]
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In these instructions, I teach you how to make a vibrating little cute buzzing humming beetle robot. This is great for beginners because of the simple circuit and low parts cost.
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Charge up your USB devices with the power of the sun. By adding a small solar panel and two diodes to a standard USB cable, you can plug that cable into USB devices needing a recharge. It’s so easy. Let’s get started making a solar USB charger. Video shows the Solar USB Charger being tested […]
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Powering a TV remote with the sun means you won’t have to buy batteries every six months to surf from your 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 of the sun, using rechargeable batteries connected in parallel with a small solar cell and a diode to keep any power from trickling back out.
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Hack an iPod and a garden light, and make yourself a simple light meter!
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A little spinning top that looks like a satellite in orbit.
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A little solar-powered racecar made from techno-junk.
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