U8x8 Fonts Info

A common beginner mistake is using U8g2 (graphics) for everything because it "can do more." However, U8g2 requires a framebuffer. On a 128x64 display, U8g2 consumes:

U8x8, by contrast:

Verdict: If you are displaying text only — menus, debugging output, sensor readouts, terminal logs — U8x8 is always superior. If you need to draw circles, bitmaps, or graphs, you must use U8g2. u8x8 fonts

Cause: The font only includes ASCII 32-127. Extended characters require specific fonts with "extended" or "cyrillic" in the name. Fix: Use u8x8_font_8x8_cyrillic or u8x8_font_cp437 for IBM Code Page 437 symbols. A common beginner mistake is using U8g2 (graphics)

When you install the U8g2 library, you get access to dozens of u8x8 fonts. Here are the critical ones: U8x8, by contrast:

A u8x8 font is essentially a lookup table of bitmaps. Each character (ASCII 0-255) corresponds to a specific pattern of bits.

So, a standard u8x8 font map stores 256 characters, where each character is an 8x8 pixel bitmap (64 bits, or 8 bytes of data).