Twilight sensor ESP32 mini | Home assistant

Twilight sensor ESP32 mini USB C, designed for my Home Assistant.

I wanted a sensor that can detect the light intensity (lux) of the outside so that I can switch my living room lighting and the garden on. My sensor is mounted with double-sided tape on the fridge and looks true the window.


I have glued the lid and the case together with superglue.


1. BH1750 | VCC Red Connect to ESP32-C3 3.3V or 5V
2. BH1750 | SDL Brown Connect to ESP32-C3 SCL pin 9
3. BH1750 | DAT White Connect to ESP32-C3 SDA pin 8
4. BH1750 | GND Black Connect to ESP32-C3 Ground
5. BH1750 | ADRR Yellow (not used)