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K-9 from Doctor Who
Joule Thief Low Voltage Battery Charger
Hydraulic Ram Pump
Apple Cider Press with Grinder
cheap, nice and weird A4 graph plotter ($25 + some scrap)
Recycled Hard Drive Clock - FuneLab
Is the best PCB etchant in every kitchen ?
First Fire Mix, The Thermite Ignitor
How to repair a broken speaker of an Gameboy DMG
How To Make Awesome Caramel In A Can
True Atmega Standalone, Running without crystal oscillator (Arduino)
Arduino Step Sequencer