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bigtreetech / SKR-3

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Type K Thermocouple MAX31865 #41

Open zCruuz opened 1 year ago

zCruuz commented 1 year ago

Hi, i got a M3 Screw style type K thermocouple and a MAX 31865, but got no clue how to wire this correctly to the SKR-3. The manual only states that the integrated PT1000 circuit has a much lower resolution, but nothing more.

PaulyMooch89 commented 1 year ago

I have been reading over what GadgetAngel has done for the other BTT boards and trying to apply that to the SKR3 EZ board. I'm using a PT100 and an Adafruit MAX31865, I seem to have temperature reporting in OctoPrint over Hardware SPI using the EXP2 connector (and EXP1 for 5v/Gnd). Very strangely the moment I begin extruding filament I get an error from OctoPrint: "State: Offline after error - Temp measurement error!" and OctoPrint drops the connection. I think I'm close but maybe just overlooking something, I'll reach out to GadgetAngel and ask if any of the board guides can apply to work with the SKR 3/EZ.

Hmmm... After reading through again I may have mixed up my EXP2 pins. Here's an image of what I current have set.

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FYI Printer Info:

Printer: Monoprice MK11 (Wanhao D6 clone)
Board: BTT SKR 3 EZ
Drivers: TMC2209 (EZ)
LCD: None
Part Fan: ebmpapst RLF35-8/14N (custom LC filter for PWM smoothing)