Using AUX1 & AUX 2 ports (1 reply)

Hi,

I am new to this forum. I hope you guys be patient with me.

Ok, I have a RAMPS 1.4 board driving a prusa i3 printer. I want to control a 12V DC fan with one of the pin on the AUX1 or AUX2 ports. I want to turn on and turn off the fan by controlling the pin using GCode. Would you guys please lead me to any reference for this?

Thanks in advance.

Regards,
Jo