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Step 3The LED
For this step, we are going to use the generator to make an led light up. Get two alligator clips and connect one end to a lead of the led and the other to one of the frayed wires. Then do the same with the other alligator clip.
Use the crank to light the led. If the led does not light however, the polarity was probably reversed which means you must crank the motor in the other direction. If it still doesn't light, check your connection.
Next, get out your multimeter. Wrap the two exposed wires around the two multimeter cords. Set your multimeter to the 20 volts DC setting and crank the motor. I got mine up to 13 volts which I think is pretty good for a tiny little hand crank.
Use the crank to light the led. If the led does not light however, the polarity was probably reversed which means you must crank the motor in the other direction. If it still doesn't light, check your connection.
Next, get out your multimeter. Wrap the two exposed wires around the two multimeter cords. Set your multimeter to the 20 volts DC setting and crank the motor. I got mine up to 13 volts which I think is pretty good for a tiny little hand crank.
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