Massage machine
thingiverse
A clever DIY project involves combining a basic massage machine, a high-powered vibrating motor, a step-down converter (converting USB's 5 volts to the 3 volts required by the motor), and an old satellite TV case. The printed casing serves as a snug fit for the motor while also providing a comfortable surface for contact. This unique contraption has proven to be a game-changer in alleviating my back pain.
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