The new OLED technology only uses electricity per pixel. Because each pixel creates its own light, only the pixels that are on use electricity. This makes OLED technology very efficient; also, the way these types of OLEDs are built allows them to be very thin compared to LCD.
keyestudio 2004 I2C Module is a 20 character by 2 line LCD display with Blue background and White backlight. The original 2004 LCD needs 7 IO ports to be up and running, ours is built with Arduino IIC/I2C interface, saving you 5 IO ports. This LCD is ready-to-use because it is compatible with the Arduino Liquid Crystal Library.
Keyestudio LCD1602 3D module includes a SD card reader, a rotary encoder and a 16 character * 2 line LCD.
Keyestudio LCD1602 3D module used in 3D printer, an extension accessory of RAMPS. By using this panel, the printer can realize off-line printing function.