U166 · M5Stack
Unit Mini OLED is a 0.42-inch OLED screen unit that uses an I2C interface with a resolution of 72 x 40. It features monochrome white display and communicates with the M5 host via I2C (addr: 0x3C). This OLED screen is suitable for embedding into various home products, smart wearable devices, portable devices, and industrial instruments. Features Monochrome white display I2C communication (0x3C) SSD1315 driver Includes 1 x Unit Mini OLED 1 x HY2.0-4P Grove cable (5cm) Applications Smart… (M5Stack U166)
| Part number | U166 |
|---|---|
| Manufacturer | M5Stack |
| Category | Interface & Expansion › Programmers, Debuggers & USB-Serial |
| Pins | 4 |
Mini OLED Unit 0.42" 72x40 Display pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | SCL | input | |
| 2 | SDA | bidirectional | |
| 3 | 5V | power | |
| 4 | GND | ground |
Schematic symbol and footprint
Schematic symbol
Footprint: Grove HY2.0 4-pin through-hole, 2.0 mm pitch — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
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