| Adafruit_SSD1306_72x40 | Fix for 72x40 OLED displays. Requires and extends Adafruit_SSD1306 – not affiliated with Adafruit®. |
| BLEThermalPrinterYHK | BLE driver for YHK-compatible thermal printers with an optional u8g2 canvas for text printing. |
| PipeGIF | GIF decoder piping data from one program to another |