"Marlin 1.0.3 dev" This is a dinosaur
Real marlin has supported due for ages.
Please consider Marlin 2.
But the most obvious thing is you have the thirmistor plugged into the wrong place. (or pins files is pointing to wrong place and not looking at the thermistor)
Or it could be a dead analog pin..
Real marlin has supported due for ages.
Please consider Marlin 2.
But the most obvious thing is you have the thirmistor plugged into the wrong place. (or pins files is pointing to wrong place and not looking at the thermistor)
Or it could be a dead analog pin..