I'd like to create a false cd-rom that spins a cd constantly when powered on. I have an idea on how to do it, and did a few tests and it works, however... the voltage must be way off because the cd spins so fast it could be a fan. Is there an easy way to lower the voltage on the wires? I don't even know how much voltage I need. I hooked it up to the standard red and black pc cables, and it was too fast. I think those are 12v.
yellow is 12Volts and the red is I think 5Volts. You could start by using a resistor or 2 or if you wanna control it use a potentiometer.
Do remember to take into account the amount of current the motor requires. Try pulling more than a few watts through a standard resistor and/or potentiometer and you get a nice burning smell. If you don't know what current the motor uses, time to break out the multimeter and measure! Otherwise, use a resistor-divider.
A resistor divider will not work either. The values for the resistor would have to be incredibly low, fractions of an ohm, which would draw far too much current. I would try the 5v line of a molex, you could also try a power diode in seris with the motor to limit current.
