Originally Posted by weirdboy
I'm sure you could do something pretty straightforward with a 555 timer and a potentiometer.
Yeah that could work, would require a bit of discrete logic too though. Im thinking of a cheap PIC
with at least 4 Ouputs and an A2D for speed control input. I think the cost difference would be negligible. Push/Pull drivers for each pole and that would be all she wrote.
I am going to goto the craft store tomorrow and look for some thin plastic thread bobbins to hold the windings. Ordered some magnet wire earlier today too.
I just might be able to get the thing to fit into a standard CD case.