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 Using 3D Printer LCD module RGB MiniLCD12864V3 Part 2 LCD U8G2   Pins Required by LCD In part1 we have an introduction for this miniLCD12864V3 module. Part1 :  https://superdiyprojects.blogspot.com/2022/10/using-3d-printer-lcd-module-rgb.html  Using 3D Printer LCD module RGB MiniLCD12864V3 Part 1 Intro The major part of this module obviously is the LCD, it's 2.2inch size and has RGB backlight. 2.2inch is quite a good size, not too large and not too small. To drive it, we need to connect below pins to MCU: EXP1 Pin8 LCD_EN optional, keep in GND, this works as well Pin7 LCD_RS (DC data/command) must connect to MCU Pin6 LCD D4 Reset, optional, better to connect to MCU when in development phase, so it's easier to reset the LCD. PIN5 LCD_D5 RGB data, mandatory, without RGB backlight working, we cannot see anything on LCD screen. Pin2 GND Pin1 5V EXP2  Pin9 SPI_SCK SPI SCK, must connect to MCU Pin5 SPI MOSI, must connect to MCU The rest Pins are not needed for ...

Using 3D Printer LCD module RGB MiniLCD12864V3  Part 1 - Intro   MiniLCD12864V3, a common 3DPrinter DIY module There are quite a few low cost LCD modules in the market, the price is only about 12$ each, it contains a 2.2inch size mono LCD, resolution is 128X64, which has beautiful RGB backlight, and a rotary decoder (rotate left, right, button press), and another button, and a buzzer, also on the back there is a SD card slot.  They are quite popular in the DIY 3D printer community, they use two 10pins ribbon cables /connectors to connect to some 3D printer main controller boards. They are supported by Marlin2.0 firmware.   Lcd module running 3Dprinter Marlin firmware. LCD backlight and rotatry encoder has RGB capability ( green in the picture) Back of the module. There is a buzzer, two EXP1-2 10 pins connectors, 3 RGB IC, a level shifter IC, a 5V to 3.3V regulator, and a SD card slot. These are very common components for many many DIY projects, especially the buzzer,...