CrystalRadio 1A
thingiverse
Use a standard paperclip to create a wiper insert for the hole in the wiper detector. Insert 1N34 diode into the circuit. The device can be used with or without an extension. It has two wiring options: one with a variable capacitor and one without. This file was exported in millimeters, so you'll need to adjust the scale by a factor of 10 or 1000%.
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