Mesh bed leveling is a manual process.
Diy auto bed leveling sensor.
Use dupont wire to extend the wires of 3dtouch.
The nano is just very cheap and fits nicely int.
I build this z probe for auto bed leveling with existing parts in my bin i don t have a bltouch but it works great and cost almost nothing to.
There are several ways to connect the 3dtouch auto leveling sensor to gt2560 here is the easiest way.
I also used some 14ga silicone wire to supply power to the sensor male jumper cables cut in half and soldered to two 22ga silicone wires for the z endstop wires.
Meanwhile auto bed leveling ubl is similar but more advanced and lets you create a mesh diagram of the high and low sections of your bed.
In the slic3r you may want to add the command g28 for auto home and the command g29 for auto bed leveling at the beginning of the program.
Giveaway ended note this could also be done with a different arduino if you don t care so much about looks.
For most people linear and bi linear would be good choices.
Remove the z max connector from the board and replace it with a 3pin straight pin.
Another recommendation is for you to play with the value in.
So that the height of your extrusion is the correct one.
The two items above are the only purchases i had to make to install auto bed leveling on my ender 3.
You need to use soldering iron here.
If you made the probe i made and want to probe on a surface like fleks3d witch you can t probe with a heated nozzle to not melt the plate you can us.
I think most people have wires laying around or can get them fairly easy.
Be sure to uncomment your method of choice.