Sound when connecting liniair actuator on pypilot

[jamos.tan@gmail.com]

Hmm, can you point me in the right direction? Not sure which part of motor.ino I need to adjust for the khz, found this part but not sure:

  

Code:

  if(pwm_style == 1) {
        TCNT1 = 0x1fff;
        //Configure TIMER1
        TCCR1A=_BV(COM1A1)|_BV(WGM11);        //NON Inverted PWM
        TCCR1B=_BV(WGM13)|_BV(WGM12)|_BV(CS11); //PRESCALER=8 MODE 14(FAST PWM)
        ICR1=40000/DIV_CLOCK;  //fPWM=50Hz (Period = 20ms Standard).
        TIMSK1 = 0;
    } else if(pwm_style == 2) {
        TCNT1 = 0;
        TCCR1A=_BV(COM1A1)|_BV(WGM11);        //NON Inverted PWM
        TCCR1B=_BV(WGM13)|_BV(WGM12)|_BV(CS10); //PRESCALER=0 MODE 14(FAST PWM)

        // use 1khz safe at all speeds.   20khz is nice to avoid
        // audible sound, but you need to set minimum speed to 20-30%
        // or it will overheat the part at very low speeds.
        ICR1=16000/DIV_CLOCK;  //fPWM=1khz
        TIMSK1 = 0;