Wire Diagram for Alunar M508 (2016) with proximity sensor (With Marlin Firmware) (HY_BASE_L V1.0 board)

A wire diagram to take a Proximity sensor for Z auto leveling on a M508 (2016) Board.

08.04.2017 Update: I have added my Firmware for you people :) Have fun
15.04.2017 Update: I have added 2 Pictures of the Circuits
17.11.2017 Update: Added the Original Firmware for HY_BASE_L V1.0 board
26.01.2018 Update: Have made a mistake in the description. The blue cable is connected to the power supply at V-. I adjusted the drawing.