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On my Rambo board
My T0 seems to be broken and constantly reads 266. T2 works ok.
Can I use T1 or T3 and change the configuration?

UPDATE: checked over the extruder wiring and confirmed a resistance measurement at the connector into the board. board shows a voltage of 200mV on the connector. put some OUT_P_I inside the raw and converted temperature routines to monitor the ports. confirmed extruder does warm up but no ...

I have about a half dozen spools of 3mm ABS and PLA that i can't use in my current machine.
Is there a off the shelf machine that can convert or is that too much trouble?

woops: switched the title around.

Update: Was able to turn on bed and run M303 calibration targeting 95 degrees but temperatures are still out of range. Reran extruder calibration and rechecked wiring; values still flat, so i think the circuitry on the board is bad or not configured correctly. what voltage should i expect on the ...

Update: 100K Thermistor is correctly selected in Repetier firmware. Still not calibrating or reading correct temperature.

Blind It sounds like you either have shorted out the thermistor inputs on the RAMBo via the hotend wiring, or you have the wrong board type or thermistor config in the firmware. That's the only two ways that can happen? if it were a short in the wiring, shouldn't there be a change in the chart ...

Jimustanguitar wrote: Are you getting that 85k Ohm reading at the far end of the wires where they're connected to the Rambo?

I took the resistance measurement both at the thermistor ends and at the end of the lines.

I'm working through a few issues but first things first. With no thermistors connected, temperatures on extruder reads 244.58 degrees C and Bed reads 89.88 degress C. Plugged thermistors back in and no change in temperature readout. Started PID calibration with M303 S200 and it fails with ...