U8x8 | Fonts
Optimizing Your Tiny Display: A Deep Dive into U8x8 Fonts When working with memory-constrained microcontrollers like the Arduino Pro Mini or Uno, the U8g2 library
However, the 8x8 box is small. A capital 'A' might take up 7x7 pixels. A lowercase 'g' with a descender might only take 7x5 pixels. This leads to the common complaint: "u8x8 fonts are ugly and blocky." But that blockiness is the price of extreme efficiency. u8x8 fonts
Speed
: By bypassing complex graphics procedures (like drawing lines or circles), U8x8 updates text rapidly and efficiently. Optimizing Your Tiny Display: A Deep Dive into
Conclusion
_r: Regular (Standard map, usually includes basic ASCII)._b: BOLD? No. In U8g2,_boften refers to Latin-1 character mapping (allows for special characters like German umlauts, accents, etc.), or a slightly different glyph set depending on the specific font.
U8x8 fonts are defined by a specific set of rules that distinguish them from standard bitmap or TrueType fonts: Grid Placement : Characters are placed in columns ( ) and rows ( ), simplifying the math for UI alignment. Font Scaling : The library supports variants, which scale glyphs in the _r : Regular (Standard map, usually includes basic ASCII)
Cause:
You are using a U8g2 font with a U8x8 constructor or vice versa. Fix: Ensure you use u8x8.setFont(u8x8_font_...); (note the u8x8_ prefix) not u8g2.setFont(...) .