Is there a way that a relay can be triggered only when the stepper driver is moving in a positive direction, ie can I turn on a fan only when the extruder is extruding and turn it off when its retracting?
You could tap off the direction pin on the driver board, that might do what you want. You'd have to add a transistor / FET / op-amp or similar power amplifying device though.
Edited 1 time(s). Last edit at 02/19/2016 10:28PM by nebbian.
