While reading through Charles Platt’s excellent book Make: Electronics, I came across this nice little circuit for making a gentle pulsing LED. I was struck by the “humanness” of the pulse, but couldn’t figure out what to do with it. Later I found a heart-shaped tag on some pants I had bought, and well, this […]
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OK, so it’s not, actually. Bulletproof, that is. But with 3/32″ aluminum sheet covers, nickel-plated steel piano hinges, and all-riveted construction, it’s a damn sight tougher than just about any other 3-ring binder you’re likely to encounter in the wild. Especially those crappy cardboard-shrinkwrapped-in-vinyl models most of us had to make do with as schoolkids. […]
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The HeliRocket is propelled by a standard model-rocket engine, but instead of the engine’s ejection charge deploying a parachute, it releases the rocket’s 3 tail fins. The fins then swing up into a helicopter blade configuration, which slows the rocket’s descent by converting much of its kinetic energy into drag and angular momentum (spin). Some […]
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I’m fascinated by sous vide cooking, in which foods vacuum-sealed in plastic are immersed in a precisely temperature controlled hot water bath to achieve optimal doneness. But most sous vide (soo-veed) cooking machines are commercial models that cost north of $2,000, and the first “home” version, the countertop SousVide Supreme, is priced in the […]
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My girlfriend got a microscope packed in a really nice wooden box, which also provides space for all the additional lenses and working materials. But the uses for the microscope were really limited, especially because I rarely have transparent stuff to look at and there was no light bulb built in. It is a nice […]
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Build a coffin-shaped card box. Cards get inserted, the spirits get excited!
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Spook your friends with this monster-popping trick hat!
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