Switching from Duet Maestro to Duet WIFI
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The fan fuse is for all the fans.
Don't flip the fan connectors. The board is marked with polarity and your fan should be too. connecting a fan with reversed polarity is a good way to kill the mosfet or the fan or both. If it works in the always on port, then the fan is good and the polarity is correct and your cable is good and the voltage is set correctly.
If you've connected to the correct fan port and have sent the M106 command to turn on the fan but nothing happens, then the mosfet for that fan port is likely damaged.
If that is the case you can potentially replace the mosfet if you're competent with that sort of thing. Or you can use a different fan output if available. It might make sense to put the hotend heatsink fan on the always on port and use a working PWM port for the part cooling fan. If you're still short of fan headers but had a free heater connector you could repurpose that as a fan header.
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@Phaedrux said in Switching from Duet Maestro to Duet WIFI:
The fan fuse is for all the fans.
Don't flip the fan connectors. The board is marked with polarity and your fan should be too. connecting a fan with reversed polarity is a good way to kill the mosfet or the fan or both. If it works in the always on port, then the fan is good and the polarity is correct and your cable is good and the voltage is set correctly.
If you've connected to the correct fan port and have sent the M106 command to turn on the fan but nothing happens, then the mosfet for that fan port is likely damaged.
If that is the case you can potentially replace the mosfet if you're competent with that sort of thing. Or you can use a different fan output if available. It might make sense to put the hotend heatsink fan on the always on port and use a working PWM port for the part cooling fan. If you're still short of fan headers but had a free heater connector you could repurpose that as a fan header.
I didn't know what else to do so I just hit the reset button as I wanted to try one last thing before I exchanged the board and finally FAN 1 tuned right on with full controllability. This was in FAN 1 as opposed to the stock FAN 2 position. I powered down and then switched back to FAN 2 to check it and it was still not working.
I'm okay with using a different port, but any thoughts on why the reset button worked and why FAN 2 is still down? Basically, if FAN 1 is working I should be fine correct? Is their separate Mosfets for each port or should FAN 2 be working if FAN 1 is?
Thanks !
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How should I configure this to make the nozzle fan use FAN 1 instead of FAN 2 ? Comment out the second line and switch the 3rd line from P2 to P1?
M106 P0 S1 I0 F500 H-1 L0.3 ; Filter fan. Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off, Minimum fan value 0.3, Speed 100%
M106 P1 S1 I0 F500 H-1 L0.3 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off, Minimum fan value 0.3, Speed 100%
M106 P2 S1 I0 F500 H-1 L0.3 ; Nozzle fan. Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off, Minimum fan value 0.3, Speed 100% -
@Stephenbright There's no difference in the command you're sending to fan 0, 1 or 2 in the above (they are all set to manual control), so it doesn't really matter. It's only the comment (after the ; ) that's different.
Ian
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The tool definition needs to change to assign the fan you want to the tool.
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@Phaedrux Where is that specifically?
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@Stephenbright said in Switching from Duet Maestro to Duet WIFI:
; --- SECTION: TOOLS ( ) ---
; Comment: Remember! H0 is the heated bed!
; Comment: D0 is the first driver after movement (X, Y and Z) drives, which is left extruder
; D1 is right extruder
M98 Pmachine_ktana_tools.g ; Define ktana toolsIn your case, it would appear to be somewhere in here.
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@Stephenbright said in Switching from Duet Maestro to Duet WIFI:
M106 P0 S1 I0 F500 H-1 L0.3 ; Filter fan. Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off, Minimum fan value 0.3, Speed 100%
M106 P1 S1 I0 F500 H-1 L0.3 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off, Minimum fan value 0.3, Speed 100%
M106 P2 S1 I0 F500 H-1 L0.3 ; Nozzle fan. Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off, Minimum fan value 0.3, Speed 100%How do I set these to Auto? I'm guessing that is the Thermostatic setting? Thoughts on what to set that to?
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@Stephenbright use H and T parameters of M106. See https://duet3d.dozuki.com/Wiki/Gcode#Section_M106_Fan_On
The temperature you turn it on is up to you. I have mine set to 45C; hot enough that the fan isn’t on when machine is idle, cold enough that it turns on early when hot end is turned on.
Ian
