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Alexander Spiridonov edited this page May 17, 2026 · 24 revisions

Welcome to the GEM wiki!

This wiki extends the information provided in Readme and provides additional documentation for examples supplied with the library.

General

Initial setup
How to (create menu items, buttons, add callbacks, use context, etc.)

Customization

Menu appearance (menu item's width, height, changing menu color, etc.)
Custom icons (customize set of icons used to draw UI elements of the menu)
Splash screen (modify, disable, load custom splash screen logo)

Examples

Test bench with push-buttons:
- AltSerialGraphicLCD version (project configuration used with examples for AltSerialGraphicLCD version)
- U8g2 version (project configuration used with examples for U8g2 version)
- Adafruit GFX version (project configuration used with examples for Adafruit GFX version)
Example 01: Basic (editable int and bool menu items, basic button action)
Example 02: Blink (submenu, validation callback, context-based button action)
Example 03: Party Hard! (option select, readonly mode, validation callback, context-based button action)
Test bench with rotary encoder:
- AltSerialGraphicLCD version (project configuration used with examples for AltSerialGraphicLCD version)
- U8g2 version (project configuration used with examples for U8g2 version)
- Adafruit GFX version (project configuration used with examples for Adafruit GFX version)
Example 05: Encoder (control menu with rotary encoder)
Example 06: Todo List (dynamic menu items management, individual appearance of menu pages, items traversing, custom splash)

Optional shields

Shields