U8g2 is a monochrome graphics library for embedded devices.

• Supported Display Controller: SSD1305, SSD1306, SSD1309, SSD1316, SSD1322, SSD1325, SSD1327, SSD1329, SSD1606, SSD1607, SH1106, SH1107, SH1108, SH1122, T6963, RA8835, LC7981, PCD8544, PCF8812, HX1230, UC1601, UC1604, UC1608, UC1610, UC1611, UC1617, UC1701, ST7511, ST7528, ST7565, ST7567, ST7571, ST7586, ST7588, ST75256, ST75320, NT7534, ST7920, IST3020, IST7920, LD7032, KS0108, KS0713, SED1520, SBN1661, IL3820, MAX7219 (see here for a full list)
• The Arduino library U8g2 can be installed from the library manager of the Arduino IDE.

U8g2 also includes U8x8 library. Features for U8g2 and U8x8 are:

• U8g2
  • Includes all graphics procedures (line/box/circle draw).
  • Supports many fonts. (Almost) no restriction on the font height.
  • Requires some memory in the microcontroller to render the display.
• U8x8
  • Text output only (character) device.
  • Only fonts allowed with fixed size per character (8x8 pixel).
  • Writes directly to the display. No buffer in the microcontroller required.

There is one more class/sub-library "U8log", which emulates an output terminal (like Arduino serial monitor): U8log Reference Manual

Overview

• Gallery
• How to install U8g2
• Introduction to U8g2
• U8g vs. U8g2 (with code porting guide)
• Supported Arduino Boards
• FAQ

Code Reference

• U8g2 C++/Arduino Setup
• U8g2 C Setup
• U8x8 C++/Arduino Setup
• U8x8 C Setup
• U8g2 Reference Manual
• U8x8 Reference Manual
• U8log Reference Manual
• MUI (Minimal User Interface) User Manual
• MUI (Minimal User Interface) Reference

Font Reference

• U8g2 and U8x8 Font Groups
• Icon and Symbol Fonts
• All U8g2 Fonts
• Monospace U8g2 Fonts
• All U8x8 Fonts
• All U8g2 Fonts (PDF) (might not be up to date, see here for the latest version.)

Other

• U8g2 Memory Optimization and Feature Selection
• Porting to new MCR platform
• U8g2 Developer Information
• U8g2 Font Format
• Windows Font Editor Fony 1.4.7