“In this short Instructable I show you how I made a light intensity meter based on a BH1750 sensor module.
This BH1750 has a I2C bus to communicate with the arduino pro mini I used. The Oled screen also used the I2C bus. I use a 3.3V arduino since I power it with a LiPo battery.
Supplies:
Arduino IDE and BH1750 library
BH1750 module
Arduino pro mini 328P 3.3V
Lipo battery
TP4056 charger module
Switch
Enclosure
0.91 inch Oled screen
10K and 20K resistor”