@chiranjeevi said in chamber heating fan - auto on when you set chamber temperature:

i tried the PT100 using the official daughterboard, but its not working well, maybe due to interferences. is there a way to add more thermistors to duet 2 wifi?

If you already have the Pt100 daughterboard that would probably be the easiest solution. Interference may be overcome with improved shielded cabling and 4 wire mode.