Description LCD Unit is a 1.14-inch color LCD expansion display unit for compact information panels. It uses the ST7789V2 display driver with 135 x 240 resolution and RGB666 color output, and includes an internal ESP32-PICO control core with built-in firmware. LCD Unit connects to an M5Stack host over I2C at address 0x3E and supports control and firmware upgrades through I2C. A rear magnetic attachment makes LCD Unit easy to place on metal surfaces for instruments, controllers and small display panels. Features 1.14-inch color display: LCD Unit provides a compact 135 x 240 LCD panel for small information screens. ST7789V2 driver: LCD Unit uses the ST7789V2 display driver and supports RGB666 color output. I2C host control: LCD Unit communicates with an M5Stack host over I2C at address 0x3E. Internal ESP32-PICO core: the built-in controller and firmware make display development more convenient. Magnetic rear attachment: LCD Unit can be placed on metal surfaces for quick panel mounting. Firmware upgrade support: LCD Unit supports firmware upgrades through the I2C communication interface. Specifications Display Driver IC ST7789V2 Operating Current 45.7mA Communication Interface I2C @ 0x3E Display Size 1.14 inch Pixel Pitch 0.1101 (H) x 0.1038 (V) mm Resolution 135 x 240 Viewing Angle Full viewing angle Operating Temperature 0 ~ 60°C Housing Material Plastic (PC) Product Size 48.0 x 24.0 x 8.0mm Product Weight 8.6g Package Size 68.0 x 57.0 x 17.0mm Gross Weight 21.3g Applications Compact information display screens for instruments and control devices. Status panels that need a small 1.14-inch color LCD Unit display. Embedded controller interfaces where LCD Unit is controlled through I2C. Magnet-mounted display panels for temporary monitoring or quick installation. Firmware-development projects using LCD Unit, M5GFX, UiFlow or custom I2C control. Product List 1 x Unit LCD 1 x HY2.0-4P Grove Cable (20cm) Other Content I2C Display Architecture LCD Unit is an I2C unit with an internal ESP32-PICO controller and ST7789V2 LCD driver. The host sends display commands over I2C, while the internal controller manages the framebuffer and updates the LCD panel. PinMap HY2.0-4P Black GND HY2.0-4P Red 5V HY2.0-4P Yellow SDA HY2.0-4P White SCL Firmware and Development LCD Unit supports Arduino development through M5GFX and UiFlow documentation. Firmware can be updated with a USB downloader or through I2C using a compatible M5Stack controller and the firmware updater example. Resources Unit LCD product document Unit LCD schematic image Unit LCD model size drawing ST7789V2 display driver datasheet M5GFX Arduino driver library Unit LCD internal firmware repository Unit LCD firmware updater example Unit LCD UiFlow1 documentation Unit LCD UiFlow2 documentation FAQ What is LCD Unit used for? LCD Unit is used as a compact color information display for instruments, controllers and embedded display panels. What resolution does LCD Unit use? LCD Unit uses a 135 x 240 color LCD panel with RGB666 color output. Which interface does LCD Unit use? LCD Unit uses I2C communication at address 0x3E. Does LCD Unit include a controller? LCD Unit includes an internal ESP32-PICO control core with built-in firmware. What is included in the package? The package includes 1 x Unit LCD and 1 x HY2.0-4P Grove Cable (20cm).
