U173 · M5Stack
Unit QRCode is an all-in-one 1D / 2D code scanning unit, integrating a 640x480 resolution CMOS QR code capture engine and a bus conversion MCU (STM32F030). By toggling the side switch on the device, users can switch between I2C and UART communication interfaces. The capture engine supports 3 mainstream types of QR codes and 14 types of 1D codes on the market, and reserves an interface for firmware upgrading. The unit features a scan trigger button, built-in buzzer and fill-light LED,… (M5Stack U173)
| Part number | U173 |
|---|---|
| Manufacturer | M5Stack |
| Category | Sensors › Barcode & QR Scanners |
| Pins | 4 |
QR Code Scanner Unit (STM32F030) 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.
