Odd thermistor faults.

[wdenker]

@phaedrux well mcu temp helped for about an hour longer. i paused on the next blip and started back again and is solid.

[Phaedrux]

@phaedrux said in Odd thermistor faults.:

Was your MCU temp reading calibrated?

https://duet3d.dozuki.com/Wiki/Calibrating_the_CPU_temperature

[wdenker]

@phaedrux no but my infrared thermometer shows it is accurate.

[wdenker]

@phaedrux here is after a pause and resume and MCU showing 38c and infrared confirms 38c

[Phaedrux]

I think the MCU temp is a red herring.

The graph seems more like noise or interference. Or failing thermistor.

[wdenker]

@phaedrux thermistor was just replaced. I can replace again and see if I still have issues I suppose.

[Phaedrux]

Does any component on the board seem to be getting abnormally hot?

[wdenker]

@phaedrux extruder motor is.

[jay_s_uk]

@wdenker my guess is it's noise from nearby wiring such as running next to a motor cable

[wdenker]

@jay_s_uk I've got 8 other printers wired and running the same way. Only difference is this one is duet 3 instead of duet wifi 2.

[Phaedrux]

@wdenker said in Odd thermistor faults.:

@phaedrux extruder motor is.

I mean on the board itself.

[wdenker]

@phaedrux no one including the expansion board where the thermistor is plugged in. Both good temps now.