Vin vs 3V3 input MAX31855
by Steve1445 on Tue Feb 26, 2019 12:25 pm
I inadvertently plugged my 3V3 power from Raspberry Pi W into the Vin pin on the thermocouple chip. However, I was receiving "thermocouple short to ground" and "thermocouple short to Vcc" error messages. I troubleshot through connections, cold solder, etc to discover the misplacement. The errors stopped immediately. The upshot is the thermocouple now does not read temp at all, it's stuck at 32 degrees F.
tldr: When I was in error, the temp tracked in test very well, but now corrected to input on the correct pin, no reading at all.