// Example for SSD1306 128x64 I2C OLED U8X8_SSD1306_128X64_NONAME_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE);
: Did you know you can display icons like battery levels, Wi-Fi bars, and trash cans using U8x8? These are mapped to character codes, allowing for graphical UI elements without the "graphics" overhead. How to Implement U8x8 Fonts
When you are at 3 AM trying to get a temperature reading to appear on a $2 OLED soldered to an Arduino Nano, and your RAM is nearly full, you will be grateful for the u8x8 library. It turns the complex geometry of bitmap fonts into a simple, fast, grid-based system.
Because it is a text-only subset, you cannot use standard U8g2 fonts.
If you call u8x8.setFont() with a u8g2_font_xxxx (note the g2 ), your compiler will throw an error. You must use the u8x8_font_xxxx variants.