No batteries required

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