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Turn off part cooling fans when klipper is booting / offline
Hi guys,
I have V-Core 4.0 with IDEX and can not figure out, how to turn off the two part cooling fans (4028) until the klipper boots up. They go on full blast for a minute or two in the beginning, when klipper is offline (no PWM signal). There is this guide in the documentation https://os.ratrig.com/docs/guides/4028/#my-fan-runs-at-100-until-klipper-boots, but I can not make it work in the current setup. Klipper neither accepts "shutdown_value" in fan section, nor "enable_pin" works due to it being used multiple times. I have a standard IDEX setup/kit.
Is there a way to turn these fans off in configuration, until klipper boots up or do I have to rewire the fans (GND) to do so with Octopus board?
I have V-Core 4.0 with IDEX and can not figure out, how to turn off the two part cooling fans (4028) until the klipper boots up. They go on full blast for a minute or two in the beginning, when klipper is offline (no PWM signal). There is this guide in the documentation https://os.ratrig.com/docs/guides/4028/#my-fan-runs-at-100-until-klipper-boots, but I can not make it work in the current setup. Klipper neither accepts "shutdown_value" in fan section, nor "enable_pin" works due to it being used multiple times. I have a standard IDEX setup/kit.
Is there a way to turn these fans off in configuration, until klipper boots up or do I have to rewire the fans (GND) to do so with Octopus board?
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4028 server fans are becoming a popular option for part cooling because of their light weight and great pressure and flow rates. In this guide we'll go over how to connect one and use it for part cooling. 4-pin fans usually aren't used in 3d printers, and many boards only provide 2-pin ports, but fear not! There's always a way.
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