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Using surplus microwave teaching equipment, I build a simple radar detector.

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Rescue a 3D print that needs support by stacking index cards underneath the overhangs.

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A breadboard and schematic-friendly breakout for common dual op-amps. Socket your favorite dual (TL072, LM833, ...) and build your effect!

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Follow for the 'Hacklet' and latest news about hackaday.io

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299

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Grow fish and vegetables in a controlled environment.

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Guides elderly people from bed to bathroom, like the emergency lane in smoke filled a plane, without waking up their partners