Arduino turning a knob left and right with Digital PWM

Discussion in 'The Projects Forum' started by StealthRT, Feb 25, 2014.

  1. StealthRT

    Thread Starter Senior Member

    Mar 20, 2009
    Hey all i am trying to find a way in order to turn an car amp's bass level knob left and right using an arduino's Digital PWM pin. I am thinking that a stepper motor would be the correct motor to use in order to do this or no?

    Also, would there be a better fitting motor to do what i am looking to do without much needed modifications to the bass level knob in order to attach it to the motor to turn it?

    The bass knob looks like this:

    Any insight would be great!
    Last edited: Feb 25, 2014
  2. w2aew

    Active Member

    Jan 3, 2012
    Probably the easiest way to do this would be to use a typical RC Servo. They have gear reduction to give a bit if extra torque, and adjust to a particular position based on the pulse width on the control input. Google RC Servos for more info. I think there may even be a servo library in the standard Arduino IDE.