Hello to all,
I am using Marlin to build a CNC machine, not a 3D printer. So far I have been able to fight my way through many problems. But now, the heaters do what they want ;-) I hope someone has an idea where the problem is.
The problem is that I use the heaters to control valves. The heaters are switched on via M42 P2 S255 and switched off via M42 P2 S0. This works perfectly for Heater 1 and 2. Now I also need Heater 3 for another valve. If I now switch on Heater 3 with M42 P26 S255, Heater 1 is also switched on automatically, for whatever reason.
That would also be my question, why are 2 heaters switched on or off in parallel? That can't be the point of a 3D printer either. What could be the reason, how and where can I solve this?
Board: Bigtreetech Octopus 1.1 , Firmware Marlin 2.1.2.1
Many thanks for your support.
Greetings Stefan
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