She printed ship headings as plain numbers. She used custom 8x8 bitmaps for danger symbols—a skull, a wave, a reef—but only as predefined characters in the font table.
This article dives deep into the architecture, usage, and philosophy of U8x8 fonts, explaining why they remain the gold standard for monochrome text rendering. u8x8 fonts
These look like standard PC BIOS or terminal fonts. She printed ship headings as plain numbers
: All glyphs in a font share the same width, making text alignment predictable but visually "blocky". Scaling Options : While standard U8x8 is 8x8, the library supports a variant (e.g., u8x8_Draw2x2Glyph These look like standard PC BIOS or terminal fonts
static const uint8_t my_custom_font[] = 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Space 0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x00, 0x00, // ! // ... and so on for 256 characters ;