I would like to switch on and off a laser via the fan speed control "M106 S***" gcode. What pin does the arduino use to signal the mosfet connected to D9?

Much thanks in advance.

Edited 2 time(s). Last edit at 03/29/2015 03:01AM by 3Derping.

Quote
3Derping
What pin does the arduino use to signal the mosfet connected to D9?

D9 stands for Digital 9, so pin 9. Pretty creative with their naming, huh?


You should be able to use M42 Px Sy where x is the pin number (9 in your case) and y is the PWM value 0-255.

Oh that's is great. Thank-you very much!

And... I've hit a snag. I'm getting disconnected from USB control when I use MI06, sometimes.

My setup is very simple: I have an LED connected between the arduinos digital 9 pin and the ground pin. When I issue the M106 gcode, the arduino and LED stay on, but, about a quarter of the time, the USB connection is broken. What gives?