Does anyone know how to keep the control box fan always on via the Marlin firmware when it’s plugged into the stock pins on the RAMBO? The x-axis stepper gets very warm and appears to be making a clicking sound. I’d like to run it w/ the control box fan on to see if I get the same clicking sound. With the prints I’ve run so far w/ the newly installed Flexy Dually V2 firmware the fan never turns on.
Have you added a heat sink to the driver chips yet! The dual head is a fair amount of load for both the Z and X axis motors and their driver chips. As for the control box fan I have no idea on a gcode for that.
Thanks. I had bought some heat sinks from itworks3d.com a few weeks back and had installed one on the z driver chip because Lulzbot did that when they went from the TAZ 4 (my printer) to the TAZ 5. I wanted to get the control box fan going to see if that eliminated the x stepper clicking before I installed a heat sink on the x driver chip simply because that’s the way Lulzbot runs their machines w/out issues.
Turns out one of the wires was wedged in the fan preventing it from spinning. Now w/ the control box fan running the x stepper clicking is gone, so problem solved. I may still install a heat sink on the x driver chip since I’m printing ABS in an enclosure which may cause the driver over heating issue to pop up again…keeping an eye and ear on it.