Hi everybody, I have a prusa i3 hephestos and I'm trying to setup an auto leveling system by servo.
I followed the Zennmasterm instructions but my servo doesn't move.
I tested the voltage and It's okey but I can't move my servo with M280 M401 or M402 commands.
Any ideas? I tried older and newest versions of marlin and firmware, I feel like i'm mental with this problem, everybody can move the servo except me. I followed every step and nothing happens...
Ill be grateful if somebody could help me.

First of all, could you tell us what board you're using and marlin version?