Typically 8 × 8 pixels, perfect for standard 128 × 64 displays, providing 8 rows and 16 columns of text.
: Drawing text is significantly faster because the library only updates the specific tiles where characters reside. Hardware Compatibility : It supports a vast array of controllers, including the SSD1306 and SH1106 , commonly found in DIY electronics. 4. Practical Implementation Implementing these fonts involves a simple setup within the Arduino IDE . Developers typically call u8x8.setFont() followed by u8x8.drawStr()
Includes all characters (uppercase, lowercase, symbols).
Unlike the standard U8g2 library, which renders fonts pixel-by-pixel using a memory-intensive RAM frame buffer, the U8x8 library tile-renders text directly to the display controller. u8x8 fonts
: Places text at specific grid coordinates. On a 128x64 display, this means 16 columns and 8 rows. setInverseFont(1)
Using these fonts involves setting the font before drawing text, utilizing setFont() . Basic Usage Example
: Contains only numbers and the basic symbols required for math, dates, and times (e.g., . , : , - , , ). This uses the least amount of flash memory. Typically 8 × 8 pixels, perfect for standard
Standard U8g2 requires a "frame buffer" (usually 1KB for a 128x64 display). U8x8 uses no RAM buffer , writing directly to the display.
: You cannot draw custom geometric primitives such as individual pixels, circles, or diagonal lines. 2. Deciphering U8x8 Font Naming Conventions
The is a specialized, lightweight text-output mode within the U8g2 graphics library designed specifically for monochrome OLED and LCD displays. Unlike standard graphics modes that require significant RAM to buffer an entire screen, U8x8 writes directly to the display, making it an essential choice for memory-constrained microcontrollers like the ATtiny series. Performance and Memory Efficiency Unlike the standard U8g2 library, which renders fonts
All U8x8 fonts must fit within the 8x8 pixel tile structure. This means standard fonts are exactly .
Every font file in the U8x8 library follows a strict naming convention that tells you exactly how it will look and behave. 1. Font Size Constraints