In this video, I am talking about how to use the manual mesh bed leveling feature of the Marlin firmware. You will find all links to the documentation and also links to the STL files on Thingiverse in the description below.

*** Get the Anet A8 here
Amazon:
https://amzn.to/2E9gEZa
Gearbest:
https://www.gearbest.com/3dprinters...

*** Thingiverse STL links

Bed leveling test print
https://www.thingiverse.com/thing:34558

*** Videos you might want to watch upfront

How to install the latest version of the Marlin firmware to your printer
   • How to install Marlin firmware 1.1.9 ...  

How to install a 12864 LCD Display on your Anet A8
   • Anet A8 lcd upgrade  step by step  

*** Marlin Firmware installation and config changes for manual mesh bed leveling

Marlin Firmware
https://github.com/MarlinFirmware/Marlin

Documentation on manual bed leveling with Marlin firmware
http://marlinfw.org/docs/gcode/G029m...

Enable line numbers in the Arduino IDE by going to the menu "FilePreferences" and then check the "Display line numbers" checkbox. Hit "OK".

Open the Marlin.ino project and then click on the "Configuration.h" tab to edit the configuration file.
First got to approx. line #980 (may be a bit different depending on your version of the firmware).

Uncomment the line "#define MESH_BED_LEVELING" by removing the double // slashes in front of the line.

Do the same for line #1102 (#define LCD_BED_LEVELING)
and line #986 (#define RESTORE_LEVELING_AFTER_G28).
Note: Enable #986 only if you do want to load the mesh every time you do G28 (auto home). Otherwise keep this line commented out and use the "M420 S" command in your slicer software after the G28 command.

Save the file and then upload the firmware to your printer

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