Can you replace broken 100k thermistor with thermocouple - potentially blown analogue input as well

  • Can you replace broken 100k thermistor with thermocouple - potentially blown analogue input as well Ageis

    I have bought myself an I3 3D printer - it comes with a thermistor which is then placed into a hole in the hotend and held in place by a grub screw.

    Sadly due to my lack of care I managed to crush the wires with a pair of vice pliers whilst trying to remove the nozzle as it was clogged.

    I have since unblocked it but now every time I turn on the 3D printer instead of giving a minimum temperature error it says it's 260°C - even if it's left off all night and I unplugged the thermistor. Otherwise, it seems to be fine.

    I want to know can I just replace it with a thermocouple and a Maxim amplifier board (the one that Marlin supports, I forget the name)? The thermocouple I have in mind is one that has the junction exposed (see image below), does this matter?

    Thermocouple diagram

    I plan to re-route it in the firmware to use A15 instead as I believe I must have blown the analogue input, right?

    Thermocouple photograph

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