This is a daughter board designed specifically for the control boards Duet3D, this expansion allows two thermocouples to be connected.
The thermocouple expansion is compatible with all Duet 2 and Duet 3 main boards, as well as the 3HC expansion.
This board is based on the MAX31856, so several thermocouple types (K, J, N, R, S, T, E and B) are supported.
Thanks to the MAX31856 module, a digital signal is obtained from the analog signal of thermocouples. Here it is possible to control temperature on Duet boards even through very precise probes with a wider temperature range than normal thermistors.
For example, Duet2 Wifi and Duet2 Ethernet support up to two temperature probe expansions stacked on top of each other, with two additional ones installed on a Duex2 or Duex5 expansion board. Here, with 4 expansions, a total of 8 thermocouples are supported.
Expansions for thermocouples and PT100 temperature sensors can be combined and matched with each other on the same motherboard.
For thermocouples and temperature sensors see the dedicated section on the website.