I post my request in this forum, since until now under Arduino-Based no answer has arrived.
Hi all
my Arduino (UNO) Shield MD10 controls a DC brush motor 24V / 4A. I use as a PWM frequency 980 Hz in Arduino. This works very well.
Now this frequency is extremely disturbing and easy to hear. If I have understood everything correctly, the next higher frequency with the Arduino is 31'250 Hz.
Now, the manual for this Arduino-shield sets the upper limit for the frequency at 10'000 Hz.
My question:
What can happen if I use the frequency 31'250 Hz?
Short-term tests worked well, but the voltage regulator chip is easily warmed up.
Thank you for your answer
arts