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Near-Space Balloon Cam with Arduino and APRS Radio

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Build this battle-tested rig to launch, track, and recover a high-altitude balloon that will carry your hacked Canon camera to the stratosphere. With this setup using APRS ham radio and the Trackuino — an Arduino-based communications board — any hobbyist or science class can photograph (and video) the Earth against... Read more »

Super Simple iPod FM Transmitter

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FM transmitters can be complicated to build, but not this one — it's about the easiest you can possibly make. And though the science of radio is well understood, there's a magical, emotional quality about it that we don't often stop to appreciate. Building your own radio receiver — or... Read more »