My Attempt at a PWM Controlled Servo Motor

310

02:34:15

Damn pwm controllers are waaaay more complicated than an analog servo motor, theres got to be a better way to control the direction, speed, and position of a DC motor using a pwm signal and a potentiometer.

Yes I know you can use a 555 and a pot to generate a pwm signal to control the speed of a motor, and a h bridge and switch to change the direction of the motor, but accurately adjusting the position of the motor is a much harder challenge. Does anyone have any idea on how to achieve this result with a simpler circuit than the one I made?

published 1 year ago

Addramyrz

1 year ago

https://everycircuit.com/circuit/4606162373705728

Addramyrz

1 year ago

Fets, driver's & hall sensors, extra components ... A lotta extra work ... Side note: a 555 with a waveform at the control pin is a quick cheap ppm at least

BraydanD

1 year ago

ppm, pulse position modulation?

BraydanD

1 year ago

Ah i was correct , pulse position modulation, in your circuits that 70Hz sine wave, is that in place of the error voltage from the servo motor? So depending on the error voltage it changes the speed at which the motor rotates until the pwm signal is 0% and the motor stops at the desired position?

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