Duet 3 Mini 5+ Max31855 Thermocouple board broken, bad Printer.cfg or otherwise?

General Discussion
11

Hey Rex,

  1. I purchased the daughter board from E3D who state that the board sold is the old MAX31855 chip. See photo
    DSC_0253_edit
    DSC_0253_edit1920×1635 305 KB

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  2. Yes, I saw this in another post here https://klipper.discourse.group/t/duet-rtd-thermocouple-daughter-card-configuration/5549 and I have disabled it, see attached printer.cfg (4.2 KB)

Yes I have renamed it to tc_disable, I am pretty sure you can type any name here though?
I have tried both terminals on the daughter board and I have tried swapping the thermocouple wires within each terminal as well.

I noticed that the daughter board layout for the MAX31855 is exactly the same for the MAX31856, I am tempted to solder new MAX31856 chips onto my board to get the noise filtering.

I don’t think anything should be making noise though, I am using a decent power supply. I have tried disconnecting everything but the bare essentials, to see if this was the issue.