I have a Folger Tech Prusa i3 2020 and want to add an auto bed leveler sensor. Any ideas,where to start for this printer? I know I need a sensor (what kind) and a way to mount it (how? Have a stl available?) and need to wire it up to the Ramps 1.4 board and uncomment something in the Marlin code, then add some sort of g-code to my slices. But right now, I’m stumped on the sensor and mount.
I’d recommend an inductive sensor. You would have to add either an aluminum plate or some foil to the underside of the glass to keep using the heated bed. In terms if firmware it’s just uncommenting #enable_autoleveling or something around that. Do a control f and type in autolevel. You will find the line. In terms of your slicer you have to go to the start and end codes for a print and in the starting portion add G29 after the G28.
This is a helpful vid on it https://www.youtube.com/watch?v=EcGFLwj0pnA