LCD12864 graphic 128×64 LCD Display Module Blue Screen

Blue Dot Matrix LCD Module 12864 (128 x 64 Pixel) with white backlight.

Controller ST7920. Libraries are available, for example for Arduino IDE.

This display comes with an integrated contrast potentiometer, and does not need an external potentiometer for contrast adjustment, like most other displays!
This is a 128×64 liquid crystal display that support Chinese character , English characters and even graphics, very suitable for interactive work with Arduino.
Ordinary LCDs can only display simple text or numbers within a fixed size. But in 128×64 graphical LCD display, there is 128×64 = 8192 dots, which is equivalent to 8242/8 = 1024 pixels. So, it can display not only simple text or numbers within a fixed size but also simple graphics.

GND: Ground
VCC: Module power supply – 5 V
VO: LCD Contrast
RS: Register Select Pin
R/W: Write/ Read selection
E: Enable Signal
D0-7: Data Bus
PSB: Interface selection (0 for serial communication, 1 for 8-bit parallel communication)
NC: Not Connected
RST: Reset
Vout: LCD Voltage Output (Vout < 7V)
BLA: Power Supply for Backlight+
BLK: Power Supply for Backlight-