@Dave1167 said in Duet 0.8.5 and BLtouch 3.1:
Am I correct in thinking I can go ahead and connect the probe to the 0.8.5 Z probe socket without any additional resistors or diodes etc.
It should be safe to connect the BLTouch black and white wires directly to the ground and IN pins on the Z probe connector. You will need to supply +5V power to the BLTouch, and you will need to connect the BLTouch control input to a PWM-capable output on the expansion connector.