3018 CNC - Z axis tool probe (zeroing Z axis) - WoodPecker 3.2a GRBL

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I was getting sick of eyeballing the tip of the milling tool to the surface of the wood stock at every job. I wanted to share with you in this video the trick I found to probe the tool accurately every time. The solution is very simple: just 2 wires connected to 2 alligator clips and hooked to the pin A5 of the controller board.
Command to for tool probe:
G38.2 Z-12 F24 (move the tool down 12mm at the speed of 24mm per minute and stop when short circuit is detected)

G92 Z 1.6 (1.6mm is the thickness of the metal plate used)

To test if the tool was correctly zeroed:
G1 Z0 F24 (move to Z-0 at the rate of 24mm per minute)

This procedure will help you to set the Z axis at 0 correctly every time. It certainly will be useful if you do an engraving job that requires multiple tool changes.