@mosesbuckwalter said in Duet 2 Wifi With Gigabot Thermocouple Issue:

The heater section of my config.g looks like this
; Heaters
M305 P1 X100
M305 P1 X101
M305 P0 X102
M305 P0 X103

You can't set a single heater to use 2 channels. For example, the M305 P1 X101 command will cancel the M305 P1 X100 command.

Unless the thermocouple board is the older version, you need to use X150 and X151, not X100 and X101. The image on the Printed Solid page shows the newer version, which uses MAX31856 chips, but the text incorrectly says that it uses MAX31855.