1- I have acquired several dc motors, but ending up knowing nothing about their ratings. is there ant way to identify motor rating?
2- I am stuck with choosing the right controller / driver for a specific dc motor. would you advise on the selection criteria and if you provide a tool such as compatibility matrix among controller/driver v. motors
thank you for your reply… here is a list of motors I ordered lately from Pololu store:
1- Brushed DC Motor: 130-Size, 6V, 11.5kRPM, 800mA Stall
2- Tamiya 70168 Double Gearbox Kit
here are comments from the site on both items:
1- It has a recommended operating voltage of 3 – 12 V, at 6 V, the no-load speed is about 11,500 RPM, the no-load current is approximately 70 mA, and the stall current is around 800 mA
2- The low-voltage motors run on 3-6 volts and draw up to a few amps, making them perfect candidates for the Pololu low-voltage dual serial motor controller.
for the motors in the second item there is a link to the motor datasheet which states that its operating range is 1.5v to 3.0 v.
I’m not sure what your point or question is regarding the first motor. For the second motor, the nominal voltage is 3V, but you can typically go over or under that, though running at higher voltages will reduce the motor life (see nexisnet’s tests for more info). Another consideration is that you usually lose some voltage in the motor driver, and if it’s not that great and your 6V battery is not totally fresh, you might not have much more than 3V at your motor, anyway.
have a problem with my SMD with the dc Motor Controller …think it needs a overall rework. just thinking of soldering it but dont know which is most effective