cooling fan under-volt
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part cooling fan only outputs 9 volts. is there a way to increase it to 24?
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https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_fans
How many volts is your PSU?
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@phaedrux 24 the cooling fan is the only thing that isn't reading 24 for some reason
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Are the other fan pins putting out 24v? Be careful not to short anything when measuring.
And just to clarify, is the jumper bridging VFan and Vin?
What board and revision are you using?
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its plugged into vfan the other pins are 24 I'm not sure what board I'm using all I know is its a duet wifi board.
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@therealawyt You may have a blown fan mosfet then.
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the fan works when plugged into a different port. do you know how to switch on another one of the sometimes on fan ports in the firmware?
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ok so I figured out how to change it but the fan doesn't stay on. when i turn the machine on it goes on for a few seconds then turns off
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@phaedrux said in cooling fan under-volt:
https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_fans
and this https://duet3d.dozuki.com/Wiki/GCode#Section_M106_Fan_On
Should help explain how fans are setup.
It would also help if you posted the fans section of your config.g and explained which port you're trying to use for what.
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M106 P0 S0 I0 F500 H-1
M106 P1 S1 I0 F500 H1:0 T45
M106 P2 S1 I0 F500 H1:0 T45
M106 P3 S0 I0 F500 H-1to my knowledge port 2 is broken so i added port 3 and it only comes on for a little when the board resets
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sorry i meant i think fan 0 is broke
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ok problem solved my 0 port is still dead but i got the other ones working do you by chance know how to tell simplify 3d to use that fan for part cooling?
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You can modify the M563 command in your config.g that sets up the tool head.
https://duet3d.dozuki.com/Wiki/GCode#Section_M563_Define_or_remove_a_toolBy default it's probably something like this
M563 P0 D0 H1
You can add an F parameter to use a different fan as the part fan for that tool. So in your case you'd add F3.I'm not a Simplify3D user, but they may also have a way to change the fan pin to use for the part cooling.
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it seems that adding the f3 doesn't do anything as when I turn on what is supposed to be the tool fan nothing happens. but when I turn up the slider for that specific fan it turns on
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it still only effects port 0
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@therealawyt said in cooling fan under-volt:
it seems that adding the f3 doesn't do anything as when I turn on what is supposed to be the tool fan nothing happens. but when I turn up the slider for that specific fan it turns on
You need to make the corresponding tool active M563 F parameter to work, because different tools can use different print cooling fans. So if you have defined your tool using M563 P0 H1 D0 F3, send command T0 to activate that tool, then a M106 command with no P parameter should control fan 3.
