Cytron Technical Forum

Hi,

I use a Arduino Nano and the 10A Motor Driver single from cytron, everything works just fine, except the Motor sounds in a very high pitched tone, way too loud. By using a PWM controller with Poti and just without any driver i could find out, that the Motor is usualy silent.

Can someone help?

Hi,

The noise is caused by the PWM frequency driving the motor. By default, frequency of PWM generated by Arduino Nano is around 490Hz which can be heard by human. To reduce or eliminate the noise, try to increase the PWM frequency to out of human audible range (> 10kHz is good enough).

https://www.iottechtrends.com/change-fr ... -pwm-pins/