BH1750
Rohm BH1750FVI 16-bit digital ambient light sensor with I2C interface, measuring 1–65535 lux. Two selectable I2C addresses (0x23/0x5C) via the ADDR pin.
Pinout
- VCC
Supply voltage (3.3 V when used with ESP32)
Type · PowerVoltage · 3.3 - GND
Ground reference
Type · Ground - SDA
I2C data line
Type · I2C - SCL
I2C clock line
Type · I2C - ADDR
I2C address select: LOW → 0x23, HIGH → 0x5C
Type · GPIO
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VCC | Power | Supply voltage (3.3 V when used with ESP32) | 3.3 |
| GND | Ground | Ground reference | |
| SDA | I2C | I2C data line | |
| SCL | I2C | I2C clock line | |
| ADDR | GPIO | I2C address select: LOW → 0x23, HIGH → 0x5C |
Pin details
5 connections- VCC
Supply voltage (3.3 V when used with ESP32)
PowerVoltage · 3.3 - GND
Ground reference
Ground - SDA
I2C data line
I2C - SCL
I2C clock line
I2C - ADDR
I2C address select: LOW → 0x23, HIGH → 0x5C
GPIO
Start wiring
I2C · Analog · 3.3 – 5 V · Breakout
Adafruit describes the CdS photoresistor as a light sensor whose resistance falls as light increases, and its product page gives an examp…
Module pins: VCC, GND, SDA, SCL. Schematik maps them to your board in the app.
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