Description Mini OLED Unit is a compact 0.42-inch monochrome white OLED screen unit for M5Stack host devices. It uses an I2C interface, a 72 x 40 resolution panel and the SSD1315 driver, communicating at I2C address 0x3C. Mini OLED Unit is designed for small status displays in home products, smart wearable devices, portable devices and industrial instruments. Its small 25.8 x 12.0 x 6.8mm body makes the Mini OLED Unit useful where only a compact text, icon or status readout is needed. Features 0.42-inch OLED: Mini OLED Unit provides a compact 72 x 40 display area for small status information. Monochrome white display: the Mini OLED Unit panel outputs white content for clear text and icon readouts. I2C communication: Mini OLED Unit communicates with an M5 host over I2C at address 0x3C. SSD1315 driver: the SSD1315 control chip drives the OLED display. 3.3V operation: Mini OLED Unit operates at 3.3V for compact embedded display projects. Grove connection: the package includes a 5cm HY2.0-4P Grove cable for connection to compatible M5Stack hosts. Specifications Screen Size 0.42-inch OLED Resolution 72 x 40 Operating Voltage 3.3V Control Chip SSD1315 Display Color White Display Area 9.196 x 5.18mm Pixel Pitch 0.128 x 0.13mm Operating Temperature 0 ~ 40°C Viewing Angle Full viewing angle Product Size 25.8 x 12.0 x 6.8mm Product Weight 2.2g Package Size 138.0 x 93.0 x 7.8mm Gross Weight 5.4g Applications Smart wearable devices that need a compact Mini OLED Unit readout. Portable devices that show status, menu or measurement information through Mini OLED Unit. Industrial instruments that need small local display feedback from Mini OLED Unit. Home products and compact controllers using an I2C OLED interface. Embedded prototypes that need a tiny monochrome OLED status screen. Product List 1 x Unit Mini OLED 1 x HY2.0-4P Grove cable (5cm) Other Content I2C Display Integration Mini OLED Unit communicates over I2C at address 0x3C and is intended for connection to an M5 host through the included HY2.0-4P Grove cable. Development Notes The schematic PDF, MiniOLED datasheet, Arduino test example, UiFlow1 documentation, UiFlow2 documentation and product PDF are listed in Resources for hardware integration and software development. Resources Unit Mini OLED product document Unit Mini OLED schematic PDF MiniOLED OLED display datasheet Unit Mini OLED Arduino test example Unit Mini OLED UiFlow1 documentation Unit Mini OLED UiFlow2 documentation Unit Mini OLED documentation PDF FAQ What is Mini OLED Unit used for? Mini OLED Unit is used as a compact status display for wearables, portable devices, home products and industrial instruments. What resolution does the display use? Mini OLED Unit uses a 72 x 40 monochrome white OLED display. Which interface and address does it use? Mini OLED Unit uses I2C communication at address 0x3C. Which display driver is used? Mini OLED Unit uses the SSD1315 control chip. What is included in the package? The package includes 1 x Unit Mini OLED and 1 x HY2.0-4P Grove cable (5cm).
