RatRig / Rat Rig V-Core 3 - 808025 Axial Fan Holder for 3030 Frame Stepper Cooler

808025 Axial Fan Holder for 3030 Frame Stepper Cooler RatRig / Rat Rig V-Core 3
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updated January 28, 2022

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808025 Axial Fan Holder for 3030 Frame Stepper Cooler RatRig V-Core 3 

uses 2x M4 bolts and nuts & 3x M6x12 bolts and 3x T-nuts

(you probably have some T-nuts and M6x12 bolts left from your V-Core 3 build anyway.)

 

If you already used your controller cooling fan pin, which is PD12, you could use the connection right above that one, which is PD13. If so you can add the following lines to your ‘user overrides’:

[controller_fan my_controller_fan2]
pin: PD13
fan_speed: 1.0
stepper: stepper_z1, stepper_z2, stepper_z
idle_timeout: 60

the above code will define PD13 as my_controller_fan2 in the controller_fan section. the fan will run at full speed if any of the z stepper drivers are active and will run for 60 seconds after the z-steppers are disabled. 

 

note that you could just use PD12 like you are suppose to, instead of using above code. 

note 2, set the correct jumper setting for your fan. standard it is set to 24v.

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