Secret Garage Door Remote

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A garage door opener openly displayed inside your car can be an incentive to thieves. Documents from the glove compartment are likely to reveal your home address, and with the remote in hand a thief can help him- or herself to the contents of your garage, and (if it’s an... Read more »

Solar TV Remote

Solar TV Remote

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,... Read more »

Carbon Fiber Primer

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It seems as though nearly everything “high performance” these days boasts some amount of carbon fiber in its construction. Originally used in aerospace, carbon fiber has moved into the mainstream and can be found in luxury automobiles, mountain bikes, and sports equipment. Some laptops and cellphones even use printed decals... Read more »

Chladni Plate

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Use a broken speaker, bits of wire, and tape to prepare a coneless voice coil driver, then use it to generate standing waves on a sheet of metal, making sound visible. Magic! My knowledgeable friend Robin once said that you don’t need to worry about having too big an audio... Read more »