// 3. Clear the buffer (technically clears the tile grid) u8x8.clear();
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: u8x8 fonts
setFont(font) : Selects the active 8x8 font for subsequent text operations. Remember that u8x8.drawString(column