issue with new Duet3 and Out0 heater with latest beta fw



  • here is my config.g from the reprap tool for Duet3.....the bed heater works fine, but not the nozzle...and the heater cartridge works fine I tested it.....so Out1 is working but Out0 is not triggering somehow.....any clues?
    (PS.,...my bed is AC, so Out1 is only triggering an SSR25 relay, not the actual bed heater)
    ; Heaters
    M308 S0 P"temp0" Y"thermistor" T100000 B4092 ; configure sensor 0 as thermistor on pin temp0
    M950 H0 C"out1" T0 ; create bed heater output on out1 and map it to sensor 0
    M143 H0 S150 ; set temperature limit for heater 0 to 150C
    M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
    M140 H0 ; map heated bed to heater 0
    M308 S1 P"temp1" Y"thermistor" T100000 B4092 ; configure sensor 1 as thermistor on pin temp1
    M950 H1 C"!out0" T1 ; create nozzle heater output on !out0 and map it to sensor 1
    M143 H1 S275 ; set temperature limit for heater 1 to 275C
    M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit



  • So you have the extruder heater connected to the out0 screw terminals?
    Did it work with earlier firmware versions?
    Do you have Vin connected to the out0 power in terminals?
    Are you inverting out0 for a reason? M950 H1 C"!out0" T1



  • yes it worked fine on my Duet2 wifi, and since its a Duet3 there is nothing else avail but RRF3 RC1 really, the board has VIN just fine as the bed heats no problem....the inverting is something I tried last, but didnt make any difference



  • @imrj said in issue with new Duet3 and Out0 heater with latest beta fw:

    yes it worked fine on my Duet2 wifi, and since its a Duet3 there is nothing else avail but RRF3 RC1 really, the board has VIN just fine as the bed heats no problem....the inverting is something I tried last, but didn't make any difference

    What I meant by "Vin" is on the Duet3, there are 3 sets of screw terminals... "Power In", "Out 0 Power In" and "Out 0" You have to provide Vin to the middle set of screw terminals in order to get power out of "Out 0". This was done so you could have a different voltage source for the high-current "Out 0" than for other outputs. So if your Vin is 12v for instance, and you have a 12v heater, you have to jumper the 2 "Power In" terminals to the 2 middle "Out 0 Power In" terminals.

    Also note that the "Out 0" terminals have their polarity reversed but if you're just hooking a heater directly up to the terminals it shouldn't matter.

    IMG_20200303_160526.jpg

    Oh, double check the fuse!



  • ok that was it....duh...didnt have that layout on the Duet2 so I thought that was for some other thing, I dont think is clear on the instructions either, at least not obviously but anyways thanks, it hot now!!!!


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