Floating X mount Prusa i3

This is a remix of Auto touch Z end-stop.(https://www.thingiverse.com/thing:220709/) By Radus.

I loved the simplicity of this auto bed leveling

This mount leaves the X axis floating. Two mounts are needed, one for each side. The switches are supposed to be wired in series and firmware set to normally closed switches. When your print head hits the bed, the circuit will be opened and the firmware will register the height.
Remember to set Z safe homing in Marlin since this will need to remove your standard Z

Z_PROBE_OFFSET_FROM_EXTRUDER will depend on the amount of backlash when the printer head hits the bed. Opposed to probe auto bed setups, this value is **positive**. Mine is set to **1.1**. Start with a high value (higher than mine), do a first layer test print. Lower it until you see a nice first layer. Starting low might break your printer.

What I did was to incorporate a microswitch from a broken Onkyo reciever instead of the foil Radus has used. See the pic