EMO-AO4/12: Changing PWM output frequency
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Hello,
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?Best Regards,
Matthias
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@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...
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@tomas_hora I wish all at UniPi.technology a happy new year! and thank you for the answer.
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@todward Thanks a lot! We wish you too all the best in this year.