Intermitent klipper shutdown - Unable to read tmc uart + Max31865 Overvoltage or undervoltage fault
Hello,
I im facing some random shutdown from klipper on my vcore 3 / btt octopus / PT1000 thermistor w/ Max31865.
Now I have 1/3 of print failing into unexpected shudown, very annoying !!
I have some intermitent error message from "Max31865 Overvoltage or undervoltage fault", not always causing shutdown while printing. once or twince per print.
But about every 3 message , it is followed by :
Transition to shutdown state: Unable to read tmc uart 'stepper_y' register DRV_STATUS
or
Transition to shutdown state: Unable to read tmc uart 'stepper_z' register DRV_STATUS
What could be the most likely root cause?
- power outage ( i don't think so, because other equipment would have been impaced)
- wiring issue with the PT1000 ?
- faulty PT1000 ?
- ESD issue, from moving hotend ? bed is grounded.
- faulty tmc driver 2209 ? (not my best option since most of print goes well + error is not on the same axis/motor)
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