@FHesse said in Connect Pyrometer:
Maybe I can connect an arduino to the 6HC via spi and then communicate with the pyrometer via the arduino?
You could do that, but unless you are prepared to modify the Duet firmware, you will need to program the Arduino to emulate a sensor that we already support, for example the MAX31856 thermocouple interface. Note, the SPI connector on Duets uses 3.3V signal levels, so do not connect it to an Arduino running from 5V.