Use 128x32 pixel OLED like 16x2 LCD #474 - olikraus/u8g2 - GitHub
HR: 72 BPM STATUS: ✓
In the world of microcontrollers, where memory is often measured in kilobytes, the stands out as the most resource-efficient way to display text. Part of the legendary U8g2 library , the U8x8 sub-library is a "text-only" driver that writes directly to your OLED or LCD without using a RAM buffer. u8x8 fonts
To be precise, u8x8 fonts are "pure" bitmap fonts. Each character is represented by an 8-byte array. Each byte corresponds to one vertical column (or row, depending on orientation) of the character. For an 8x8 grid, you need exactly 8 bytes per character. Use 128x32 pixel OLED like 16x2 LCD #474