EMO-AO4/12: Changing PWM output frequency
I did some tests with the EMO-AO4/12 extension board. I did measure the pwm output frequency of the PWM outputs 5-15. The frequency is 200Hz. According to the datasheet of the PCA9685 the PWM output frequency can be changed from 24Hz (min) to 1526Hz (max) by setting the PRE_SCALE register of the PCA to a different value.
I need a slower PWM frequency (for controlling a heater element). Can I change the frequency with Mervis?
@todward Unfortunately changing frequency in Mervis is not supported. You might be able to change it using eg. a python program directly from the RPi. But do not know how it will work togetger...
@tomas_hora I wish all at UniPi.technology a happy new year! and thank you for the answer.
@todward Thanks a lot! We wish you too all the best in this year.