I'm doing some software that will measure speed of rotation and direction (quadrature). Early hardware not selected, and of course not available yet. So does anyone know where I can find an inexpensive d.c. motor that has a tacho with signals for speed and quadrature? I've looked at Radio Shack, Edmund's, and two robotic web sites so far. Spec's:
Speed: Don't care Torque: Don't care Size: Don't care Shaft size: Don't care as long as it will easily connect to tacho Voltage: 0 to 5 if possible Current: Low current so can run on D cells Cost: Very low since this is a throw-away part.
I can't think of anything else to specify. The motor will be driven using PWM most likely, but a buffered DAC can also be used.
Thanks for any help.
Dave,