How can I activate the AUX1 signal pin? RAMPS 1.4

Hello everyone

I am trying to activate the AUX1 signal pin on my ramps 1.4 whenever my extruder motor turns on. 

Please give me some advice. 


  • You would need to hack the enable function for the extruder motor to enable 2 pins instead. Should be i none of the extruder.* files.
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