How To Set LCD To Display Position Marlin 2.0?

Content Menu

● Introduction to Marlin LCD Displays

● Types of LCDs Supported by Marlin 2.0

● Understanding Display Positioning in Marlin

>> Physical vs. Logical Positioning

>> Menu Structure and Navigation

>> Display Offsets and Home Positions

● Step-by-Step Guide: Setting LCD Display Position in Marlin 2.0

>> 1. Identify Your LCD Type and Connection

>> 2. Adjust LCD Menu Layout (Optional)

>> 3. Test and Fine-Tune

● Customizing LCD Menus and Graphics

>> Menu Customization

>> Adding Custom Graphics

● Troubleshooting LCD Issues in Marlin 2.0

>> Common Problems and Solutions

● Conclusion

● Frequently Asked Questions

>> 1. How do I set the home position on my LCD in Marlin 2.0?

>> 2. Can I customize the menu layout and labels on my Marlin LCD?

>> 3. What should I do if my LCD screen is blank after flashing Marlin 2.0?

>> 4. How do I add custom graphics or a boot logo to my Marlin LCD?

>> 5. Is it possible to set LCD display position or orientation (portrait/landscape) in Marlin 2.0?

● Citations:

Configuring the LCD display position in Marlin 2.0 is a fundamental step for anyone customizing or upgrading their 3D printer firmware. Whether you are using a standard character LCD, a graphical display, or a touchscreen, understanding how to control what is shown—and where—on your screen is essential for both usability and aesthetics. This comprehensive guide will walk you through the process, from hardware selection to firmware configuration, menu navigation, and troubleshooting, with detailed explanations, visual aids, and video references.

Introduction to Marlin LCD Displays

Marlin firmware is the most popular open-source firmware for 3D printers, offering a rich set of features and broad hardware compatibility. One of its key strengths is the ability to interface with a wide range of LCD displays, allowing users to control their printers directly without a computer. The LCD interface provides access to essential functions such as moving axes, setting temperatures, adjusting offsets, and more[1].

LCD positioning in Marlin refers to both the physical placement of the display on your printer and the logical arrangement of menus, icons, and information on the screen. Proper configuration ensures that all data is visible, accessible, and relevant to your specific hardware setup.

Types of LCDs Supported by Marlin 2.0

Marlin 2.0 supports several types of LCD displays, including:

- Character LCDs (e.g., 16x2, 20x4 HD44780-based)

- Graphical LCDs (e.g., 128x64 ST7920, RepRapDiscount Smart Controller)

- Touchscreens (e.g., DWIN, TFT displays)

- I2C and SPI-connected LCDs

Each type has unique configuration requirements, especially regarding pin assignments, communication protocols, and menu layouts[2][5].

Understanding Display Positioning in Marlin

Physical vs. Logical Positioning

- Physical Positioning: Refers to where the LCD is mounted on your printer.

- Logical Positioning: Refers to how information, menus, and icons are arranged on the display.

Menu Structure and Navigation

Marlin's LCD menu system is hierarchical, with a main menu leading to submenus for movement, temperature, settings, and more. Navigation is typically performed using a rotary encoder or buttons. The display position of menu items can be customized by editing Marlin's source files[1].

Display Offsets and Home Positions

Setting the correct home position and offsets ensures that the LCD displays accurate coordinates and that the printer's axes align with the physical bed and nozzle locations[3][8]. This is especially important after hardware modifications, such as installing a new fan duct or changing the print bed.

Step-by-Step Guide: Setting LCD Display Position in Marlin 2.0

1. Identify Your LCD Type and Connection

- Character LCDs: Usually connect via parallel or I2C interface.

- Graphical LCDs: Connect via SPI.

- Touchscreens: May require special firmware or configuration files.

2. Adjust LCD Menu Layout (Optional)

For advanced customization, you can modify the menu structure or add custom graphics:

- Edit menu definitions in the `ultralcd` or `lcd` source files.

- For graphical LCDs, use Marlin's Bitmap Converter to create and position icons and logos[4].

3. Test and Fine-Tune

- Power on your printer and navigate the LCD menus.

- Use the “Move Axis” menu to verify that the displayed positions match physical movements.

- Adjust offsets if needed for perfect alignment.

Customizing LCD Menus and Graphics

Menu Customization

Marlin's menu system can be tailored to your needs:

- Add or remove menu items by editing the appropriate source files.

- Change menu order or labels for a more intuitive user experience.

- Assign G-code commands to menu actions (e.g., M206 for setting home offsets)[6].

Adding Custom Graphics

For graphical LCDs:

- Use the Marlin Bitmap Converter tool to generate bitmaps for status screens and boot logos[4].

- Replace or edit `_Bootscreen.h` and `_Statusscreen.h` to update images.

- Position icons precisely by adjusting X and Y coordinates in the bitmap files.

Troubleshooting LCD Issues in Marlin 2.0

Even with careful configuration, you may encounter issues such as blank screens, glitches, or incorrect menu positioning.

Common Problems and Solutions

- Blank or Glitchy Display: Often caused by timing issues in data transmission. Adjust custom delays in `Configuration.h` as recommended[7].

- Incorrect Menu Layout: Double-check that the correct LCD type is enabled and that menu files are properly edited[5].

- Missing Icons/Graphics: Ensure that custom bitmaps are the correct size and format for your display[4].

- Home Position Errors: Verify that offsets in `Configuration.h` match your physical hardware setup[3][8].

Conclusion

Configuring the LCD display position in Marlin 2.0 is a crucial step for optimizing your 3D printer's user interface. By understanding your hardware, carefully editing firmware settings, and utilizing Marlin's powerful customization tools, you can ensure that your LCD displays information clearly, accurately, and attractively. Whether you are a hobbyist or a professional, mastering LCD configuration will enhance both the usability and the appearance of your 3D printer.

Frequently Asked Questions

1. How do I set the home position on my LCD in Marlin 2.0?

You can set the home position by editing `Configuration.h` and adjusting `X_MIN_POS`, `Y_MIN_POS`, and `Z_MIN_POS` to match your printer's physical limits. Optionally, use `MANUAL_X_HOME_POS`, `MANUAL_Y_HOME_POS`, and `MANUAL_Z_HOME_POS` for manual settings. After editing, recompile and upload the firmware[3][8].

2. Can I customize the menu layout and labels on my Marlin LCD?

Yes. Menu items and their order can be changed by editing the relevant source files in the Marlin firmware, such as those in the `ultralcd` or `lcd` directories. You can also add custom G-code commands to menu actions[1][6].

3. What should I do if my LCD screen is blank after flashing Marlin 2.0?

Check that you have enabled the correct LCD type in `Configuration.h`. If the display remains blank, adjust the timing delays for data transmission as described in Marlin's troubleshooting guide[7]. Also, ensure the wiring and pin assignments are correct for your specific board and LCD.

4. How do I add custom graphics or a boot logo to my Marlin LCD?

Use the Marlin Bitmap Converter tool to generate compatible bitmaps. Replace the images in `_Bootscreen.h` and `_Statusscreen.h` with your new graphics, ensuring they match the required dimensions for your display[4].

5. Is it possible to set LCD display position or orientation (portrait/landscape) in Marlin 2.0?

Yes, for certain LCDs (such as DWIN touchscreens), you may need to specify orientation in the configuration files (e.g., `dwin_set.h`). For graphical LCDs, you can position icons and menus by editing X and Y coordinates in the bitmap and menu files[9].

Citations:

[1] https://marlinfw.org/docs/features/lcd_menu.html

[2] https://3dprinting.stackexchange.com/questions/20261/configuring-hd44780-lcd-with-i2c-backpack-in-marlin

[3] https://3dprinting.stackexchange.com/questions/14639/how-to-set-home-offsets-and-manual-home-definitions-in-marlin-correctly

[4] https://www.youtube.com/watch?v=3fGHgzZqaGs

[5] https://ezraharris.com/changing-the-lcd-configuration-in-marlin/

[6] https://forum.v1e.com/t/display-menu-functions-and-default-marlin-settings/40489

[7] https://marlinfw.org/docs/basics/troubleshooting.html

[8] https://www.reddit.com/r/3Dprinting/comments/5kn1uf/how_to_set_home_position_in_marlin/

[9] https://www.reddit.com/r/ender3v2/comments/uwdzny/help_flashing_lcd_to_marlin_20_details_in_comments/

[10] https://github.com/MarlinFirmware/Marlin/issues/863

[11] https://marlinfw.org/docs/configuration/configuration.html

[12] https://marlinfw.org/docs/gcode/G092.html

[13] https://www.youtube.com/watch?v=8mdIYlbM6CM

[14] https://reprap.org/forum/read.php?146%2C346038

[15] https://forum.v1e.com/t/setting-home-with-lcd/24176

[16] https://reprap.org/forum/read.php?415%2C743277

[17] https://3dwork.io/en/complete-guide-configure-marlin-2-0-x-from-scratch/

[18] https://github.com/MarlinFirmware/Marlin/issues/20821

[19] https://forum.v1e.com/t/display-menu-functions-and-default-marlin-settings/40489

[20] https://forum.v1e.com/t/marlin-2-firmware-printer-name-on-lcd-how-to-change/30177

[21] https://reprap.org/forum/read.php?415%2C750004

[22] https://gist.github.com/LongLiveCHIEF/53557e11a012cebdd792632e4374561d

[23] https://marlinfw.org/docs/hardware/controllers.html

[24] https://reprap.org/forum/read.php?1%2C757310

[25] https://www.reddit.com/r/3Dprinting/comments/72hy3q/enable_lcd_in_marlin_firmware/

[26] https://www.reddit.com/r/ender3v2/comments/zh8gy4/compiling_marlin_2x_for_ender_3_v2_works_but_the/

[27] https://3dprinting.stackexchange.com/questions/20261/configuring-hd44780-lcd-with-i2c-backpack-in-marlin

[28] https://www.youtube.com/watch?v=RC_m1s6Qghs

[29] https://github.com/dok-net/Marlin_Configurations

[30] https://www.youtube.com/watch?v=Yows_mBntDI

[31] https://github.com/MarlinFirmware/Marlin/issues/1454

[32] https://www.reddit.com/r/ender6/comments/sh3khk/guide_easiest_method_for_trying_out_marlin_2/

[33] https://marlinfw.org/docs/setting/lcd.html

[34] https://www.youtube.com/watch?v=6DqM9Ohr038

[35] https://github.com/MarlinFirmware/Marlin/issues/16566

[36] https://3dprinting.stackexchange.com/questions/7676/how-to-add-menu-options-to-the-marlin-firmware-lcd-menu

[37] https://github.com/MarlinFirmware/Marlin/issues/2319

[38] https://www.reddit.com/r/ender3v2/comments/kz5tee/update_to_ender_3_v2_stock_display_front_panel/

[39] https://www.reddit.com/r/ender3v2/comments/uwdzny/help_flashing_lcd_to_marlin_20_details_in_comments/

[40] https://forum.v1e.com/t/lcd-display/5951

[41] https://docs.3dque.com/docs/troubleshooting/firmware-troubleshooting

[42] https://reprap.org/forum/read.php?415%2C864775

[43] https://3dprinting.stackexchange.com/questions/11366/the-first-screen-of-marlin-2-0-is-showing-some-horizontal-lines-appearing-to-be

[44] https://www.youtube.com/watch?v=3fGHgzZqaGs

[45] https://www.instructables.com/How-to-Make-a-Custom-Boot-Screen-for-Your-Marlin-3/

[46] https://www.youtube.com/watch?v=f-7yMqap6t4

[47] https://forum.v1e.com/t/editing-marlin-menu/13181

[48] https://www.youtube.com/watch?v=eq_ygvHF29I

[49] https://github.com/MarlinFirmware/Marlin/issues/7046