Read actual PWM of heater

Lem · 1 Sept 2022, 07:50

Hello
I'm testing new M codes using dsf python scripts. This is really good, but in one of this I need information about actual PWM of heater. In ObjectModel I can find only average PWM and state which means "active", "off", etc. Is it possible to read actual PWM / bang bang status (heated or not)?

pjl · 1 Sept 2022, 14:33

@lem not without making modifications to RRF so that it supplies that specific thing to the object model. as far as I understand, at least.

How are you running the mcodes in python? I could only manage to use perform_simple_code() method since it takes in a whole string. When I tried to use perform_code() I could not get any parameters to send..

Lem · 2 Sept 2022, 08:48

@pjl
I'm running build-in G/M codes using perform_simple_code(). As you can see on github to perform_code() you need Code class obcject. I didn't try it yet.

For custom M-codes here is example

dc42 · 2 Sept 2022, 19:25

@lem currently the actual heater PWM is not available in the object model. What do you need it for, and why is the average PWM (which is averaged over the last several seconds) not suitable??

Lem · 28 Sept 2022, 07:43

@dc42 I have too weak power supply so I have to heat chamber only if bed is not heated. Earlier I did it in firmware but it will be nice to do it in Python script.