Duet 2 WIFI with RRF3.0x MCU FAN Controll

  • Hi

    I am currently preparring the change from RRF2.05 to RRF3.0x on my Duet2 WIFI maschine.
    I know that with Duet3 we need to create heaters to control fans, alsu for MCU Temp based cooling of the board.

    Could sombody help me with Duet2 Wifi and RRF3.0x in this case?

    On Duet2 Wifi with RRF2.05 I have used:
    M106 P2 T33:45 H100:101:102 ; Set Fan speed to cool MCU

    On the Duet3 with RRF3.0x:
    M308 S3 Y"mcu-temp" A"MCUTemp" ; configure sensor 3 as MCU Temperature
    M308 S4 Y"drivers" A"DriversTemp" ; configure sensor 4 as Dirver Temperature
    M950 F2 C"!out4+out4.tach" Q25000 ; create fan 2 on pin out4 and set its frequency
    M106 P2 H3:4 T33:45 C"MCU FAN" ; set fan 2 value. Thermostatic control is turned on



  • Moderator

    @Hornetrider The only thing that looks different from the example given here : https://duet3d.dozuki.com/Wiki/Mounting_and_cooling_the_board#Section_Cooling is your use of a fan with a tachometer.

    Does that fan config work if you remove thermostatic control with H-1?

  • @Phaedrux
    thx. It works fine with the example.
    Should have known that there is documentation arround 🙂

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