Bug in reprapfirmware configurator (Thermostatic fans)

  • Using the configurator (configurator.reprapfirmware.org), I ran into an issue with the thermostatic control for fans. (as of 15 April 2018)

    After digging, it turns out that the configurator was not generating the correct gcode.

    I have a 2 hotend machine, when setting Fan 1 to E0 & Fan 2 to E1, (threshold at 45C) the gcode was as follows:
    M106 P1 S1 I0 F500 H T45
    M106 P2 S1 I0 F500 H T45

    The gcode that makes things work for me was:
    M106 P1 S1 I0 F500 H1 T45
    M106 P2 S1 I0 F500 H2 T45

    Full details for the M106 command can be found here.

    I hope anyone having issues with thermostatic controlled fans finds this useful.

  • administrators

    Thanks - Will ask Christian to update this.

  • administrators

    @kosh271 You need to select the heaters to monitor on the last page if you want to use thermostatic control. But I agree it would be better if the config tool generated an error if thermostatic control is turned on but no heater is selected. I'll have a look at this.

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