hi,
I'm using RAMPS 1.4.
When I open repetier host, my heatbed temperature shows approximately 29 degrees Celsius, but my extruder temperature says that it's 0 degrees, which is not possible. I checked all my wiring and nothing seems to be wrong. So I'm guessing it's a problem with the firmware. If it is, can someone tell me what I'm doing wrong here? I'm using Marlin firmware.
Thanks a lot, Mitch.
Do a simple test, just swap T0 with T1 and see if it reads it as the hotend temperature, if it does then the problem is in your hotend thermistor, if not the you might have issues with the main board you can change the pins for T0 to use either T2 or any other available pins that can perform the function.
