10Amp 5V-30V DC Motor Driver loud!

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10Amp 5V-30V DC Motor Driver loud!

Postby BobRoss1337 » Sat Feb 22, 2020 12:53 am

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?
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Re: 10Amp 5V-30V DC Motor Driver loud!

Postby waiweng83 » Tue Feb 25, 2020 2:17 pm

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/
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