Hand Generator Car

For anyone who hasn't seen this trick yet, this Hand Generator Car project shows how to use an NXT motor as a hand-cranked electric generator to power a simple car. No NXT or batteries required!

This trick can be used for other things as well, since you have a kind of analog motor controller (continuous control of speed and direction), although it is not very strong or precise. It makes a good control for rack-and-pinion steering, for example. RCX-style motors and wires work better because the motors are smaller and the wires are longer and more flexible.


Peter Hoh said…
I love it. I've been challenging my students to build generators from LEGO motors. We use them to power light bulbs. I had not thought of using them to drive little cars.

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