Yellow-Green Dot Matrix LCD Module 12864 (128 x 64 Pixel) with backlight. Controller ST7920. Libraries available, for example for Arduino IDE. The ST7920 comes with parallel or ISP more. In SPI mode it only requires 4 GPIO ports on your micro controller (Arduino etc.) to connect to the display. This display comes with an integrated contrast potentiometer, and does not need an external potentiometer for contrast adjustment, like most other displays do!