A third thermistor?

I've added an additional thermistor to my E3D Cyclops heatsink. My plan is to monitor the temperature of the heatsink and, potentially, add PWM control to the cooling fan.

I could add another Arduino and use that to monitor the temperature but before I do that, is it possible to do this using the existing RAMPS v1.4 and Repetier firmware?




  • You can add an additional extruder using the thermistor and a dummy motor driver and heater output. most important is the dummy heater or it will stop your real heater from working. Just never use that extruder but it will output the temperature.

    For fan we support a cooling fan that gets enabled when you start heating or hotend is hot.
  • Fantastic, thank you. I'd never have thought of trying that.

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