Firmware 1.21 thermostatic fan



  • A few days ago I updated to the final 1.21 firmware and kept having a jamming issue. I ended up discovering that my hotend fan which has been setup for thermostatic operation at 45c was not coming on at all unless I manually turned it on with the slider or gcode. I haven't changed any of the settings since the update.

    here is my config

    ; Configuration file for Duet WiFi (firmware version 1.17 to 1.19)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Sun Oct 29 2017 15:41:30 GMT-0400 (US Eastern Daylight Time)

    ; General preferences
    M111 S0 ; Debugging off
    G21 ; Work in millimetres
    G90 ; Send absolute coordinates…
    M83 ; ...but relative extruder moves
    M555 P2 ; Set firmware compatibility to look like Marlin
    M665 R175.0545 L305.5553 B130 H335 X0.2123 Y-0.2632 Z0.00; Set delta radius, diagonal rod length, printable radius and homed height
    M666 X0.372 Y0.013 Z-0.384 ; Put your endstop adjustments here, or let auto calibration find them
    M208 Z0 S1 ; Set minimum Z

    ; Endstops
    M574 X2 Y2 Z2 S1 ; Define active low and unused microswitches
    M558 P5 R0.4 F500 A3 S20 ; Set Z probe type to switch, the axes for which it is used and the probe + travel speeds
    G31 P50 X0 Y0 Z-0.15 ; Set Z probe trigger value, offset and trigger height
    M557 R90 S20 ; Define mesh grid

    ; Drives
    M569 P0 S1 ; Drive 0 goes forwards
    M569 P1 S1 ; Drive 1 goes forwards
    M569 P2 S1 ; Drive 2 goes forwards
    M569 P3 S0 ; Drive 3 goes forwards
    M569 P4 S1 ; Drive 4 goes forwards
    M350 X32 Y32 Z32 E32 I0 ; Configure microstepping without interpolation
    M92 X400 Y400 Z400 E300 ; Set steps per mm
    M566 X720 Y720 Z720 E12000 ; Set maximum instantaneous speed changes (mm/min)
    M203 X18000 Y18000 Z18000 E12000 ; Set maximum speeds (mm/min)
    M201 X720 Y720 Z720 E12000 ; Set accelerations (mm/s^2)
    M906 X1000 Y1000 Z1000 E1200 I60 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S50 ; Set idle timeout

    ; Heaters
    M143 H1 S290 ; Set maximum heater temperature to 290C
    M143 H0 S85 ; Set maximum bed temperature to 85C
    M305 P0 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 0
    M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1

    ; Tools
    M563 P0 D0 H1 ; Define tool 0
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    M563 P1 D1 H1 ; Define tool 0
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    ; Network
    M550 PThe Bruise 3.1 ; Set machine name
    M552 S1 ; Enable network
    M587 S"AARGH" P"406dbn20" ; Configure access point. You can delete this line once connected
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Fans
    M106 P0 S1 I0 F500 H1 T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P1 S0 I0 F500 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P2 S0 I0 F500 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

    ; Custom settings are not configured
    M915 X Y Z E S30 F0 H400 R3
    M307 H0 B0
    M579 X0.9975 Y0.9925 Z0.98
    M307 H2 A-1 C-1 D-1
    M501



  • I should also mention that it still shuts the fan off ok during cool down.


  • administrators

    You are using fan 0 for thermostatic control, however fan 0 is the default print cooling fan. There is probably a command in the gcode file you are trying to print that turns it off. We recommend you keep fan 0 as the print cooling fan and use fan 1 output to control the heatsink fan.


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