CD ROM Motors.

[Dwayne]

Hello Mac,

Yes Mac, that is what I was planning on doing... Getting a PIC chip to work with these little motors. I figured since it was already wound, why not attempt to use their work for my behalf.

It may come down to rewinding that motor myself...but that will be one tough job. Not much room between that Rotor pole and the circuit board.

Dwayne

[Macgman2000]

Hello Dwayne,

Are you going to try using PBpro? If you get something that works would you post it? Check out gobrushless.com. They have a lot of information and motor kits.

Things to keep in mind..

1). starting the motor: step throgh a 6 step table to rotate the motor in open loop. Assume at this time that it is spinning > 1K RPM.
2). after doing #1 go to the BEMF sync detection routine. Step through the table based on the BEMF sense to trigger the next in sequence.
3). Use PWM to vary the duty cycle per table increment
4). do all of the above while taking in speed commands from a radio receiver

Best Regards,
Nick