Hi, I'm having problem reading temperature from a max31855, I can't read a temperature from the thermocouple (adafruit library send a nan value) but the internal temp reading works.
So I think the problem either come from the thermocouple or the chip. I also observed when poking around with a multimeter that the T+ and T- pin are grounded to the ground pin itself, is that normal ?
According to the code the chip thinks thermocouple is not attached: https://github.com/adafruit/MAX6675-lib ... 75.cpp#L40 (https://github.com/adafruit/MAX6675-library/blob/master/max6675.cpp#L40)
Probably there is a short somewhere. I would take off the thermocuple and start poking around with a multimeter to find any shorts on the board. Seeing how T- pin is right next to GND pin, there may be a short there.