2018-06-11 Update: DIY Hand Crank Generator
Materials: Differential, Motor, Wooden board, Empty Pen Refill, Saw Blade, Blade, Electrical DrillDifferential: it is not possible to shake much electricity without this. This is for speed increasing. Hand rotation for one cycle is equivalent to a few laps of the motor rotation.Install the motorA wooden board and a sawbladeUse a saw blade to make the size as you need.Then use a blade for fine processing, you can also use sandpaper to make smooth.Holes were drilled without electric drill, it ...
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