The BH1750 is a digital ambient light sensor with I2C interface, providing direct lux readings without requiring ADC or manual calibration. Resolution is 1–65535 lux with adjustable sensitivity modes.
| Pin | Name | Function | Type |
|---|---|---|---|
| VCC | VCC | 2.4V–3.6V power | PWR |
| GND | GND | Ground | GND |
| SCL | SCL | I2C clock | BUS |
| SDA | SDA | I2C data | BUS |
| ADDR | ADDR | I2C address select, GND=0x23 | I/O |