Hi all.
While I have been into electronics for many decades, I have found an issue experimenting so far has not helped solve.
I am building a device using a DC motor and an off-the-shelf PWM speed control (Chinese from Amazon).
It works fine but the only gear motor I could find at reasonable cost turns too fast when at maximum.
I would like to be able to modify the board or the POT to impose an upper RPM limit below the motors maximum RPM.
I prefer not to try a series resistor in line with the motor. Heat and may limit torque at lower speeds.
I have tried various combinations of adding series resistance with the pot, the wiper etc. I cannot seem to find anyway to get this to work.
555 Based timer. 100K pot. ~4 AMP 12 VDC motor.
Any suggestions are very welcome. Thanks !
While I have been into electronics for many decades, I have found an issue experimenting so far has not helped solve.
I am building a device using a DC motor and an off-the-shelf PWM speed control (Chinese from Amazon).
It works fine but the only gear motor I could find at reasonable cost turns too fast when at maximum.
I would like to be able to modify the board or the POT to impose an upper RPM limit below the motors maximum RPM.
I prefer not to try a series resistor in line with the motor. Heat and may limit torque at lower speeds.
I have tried various combinations of adding series resistance with the pot, the wiper etc. I cannot seem to find anyway to get this to work.
555 Based timer. 100K pot. ~4 AMP 12 VDC motor.
Any suggestions are very welcome. Thanks !