(Only requires a few bytes for cursor tracking) Rendering Speed Moderate (Slower due to full-buffer rendering) Blazing Fast (Direct hardware register updates) Font Flexibility
This uniform grid forces all characters to be , meaning every character on your screen, from a period to a capital "W," takes up the same exact width of 8 pixels. This strict adherence to the 8x8 grid has several key advantages:
What (e.g., Arduino Uno, ESP32) and display driver (e.g., SSD1306) you are using. The exact data you need to display on the screen. Any memory or space limits you are currently running into. Share public link u8x8 fonts
U8x8 font names follow a structured, recognizable pattern: [Type][Characters][Size][...Name...] .
These are useful for clocks or simple, large numerical displays to save space. How to Use U8x8 Fonts in Arduino (Only requires a few bytes for cursor tracking)
Remember that u8x8.drawString(column, row, "text") uses tiles , not pixels. On a 128x64 display, you have 16 columns (0-15) and 8 rows (0-7). The "f" and "r" Suffixes:
After conversion, the generated .c file needs to be included in the project, and an external declaration should be added to the appropriate header file. Some users have successfully used web-based tools such as u8x8-font-editor.html and u8x8-glyph-editor.html to modify existing fonts or create new ones, though documentation for these tools remains somewhat limited. Any memory or space limits you are currently running into
The 2×2 scaling in particular has been noted as highly useful for improving readability, especially on 128×64 OLED displays where the default system font often appears too small.
U8x8 fonts are "tile-based" or "fixed-size" fonts designed for the of the U8g2 library.
#include #include // Initialize for a common SSD1306 128x64 OLED U8X8_SSD1306_128X64_NONAME_HW_I2C u8x8(U8X8_PIN_NONE); void setup() u8x8.begin(); u8x8.setFont(u8x8_font_chroma48_r); // Setting a common 8x8 font void loop() u8x8.drawString(0, 0, "Hello World!"); // Positioned at Column 0, Row 0 u8x8.drawString(0, 1, "U8x8 is Fast!"); Use code with caution. Pro-Tips for U8x8 Success