Materials: LJUSA dynamo torch
Description: It was time to replace the batteries from our daughters toy piano. But instead I removed them all and mounted inside the piano some components (gearbox and electronics) from the IKEA LJUSA dynamo torch.
I just needed to drill some holes and solder two wires, that's all.
Now the piano will never be short of energy.
See more of the dynamo powered toy.
~ Dominik
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