Heater PWM Frequency?
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What is the default heater pwm frequency for extruders? And is it possible to change it? I have heard that for Peltier chips, we should use a fast frequency PWM and I heard that typical heater PID PWM is too slow. Thank you.
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@jml in RRF 3.x, heater PWM is set by Q parameter in the M950 that defines the pin that controls the heater. See https://docs.duet3d.com/User_manual/Reference/Gcodes/M950
PWM frequency in Hz. Valid range: 0-65535, default: 500 for GpOut pins, 250 for fans and heaters
Ian
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Take a look here: https://docs.duet3d.com/en/User_manual/Reference/Gcodes#m573-report-heater-pwm
And you can set the frequency in the M950 that defines the heater.
