Light intensity sensor BH1750 - GY-30

: SEN04044
€3.40
Tax included

The BH1750 provides 16-bit  light measurements in lux, the SI unit for measuring light making it easy to compare against other values like references and measurements from other sensors. Able to measure from 0 to 65K+ lux, the BH1750. With some calibration and advanced adjustment of the measurement time, it can even be convinced to measure as much as 100,000 lux!

GITHUB source

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*Disclaimer: The images are merely illustrative.

This is the BH1750 16-bit Ambient Light sensor from Rohm. Because of how important it is to humans and most other living things, sensing the amount of light in an environment is a common place to get started when learning to work with microcontrollers and sensors. Should we turn up the brightness of our display or dim it to save power? Which direction should your robot move to stay in an area with the most light? Is it day or night? All of these questions can be answered with the help of the BH1750. It's a small, capable and inexpensive light sensor that you can include into your next project to add the detection and measurement of light.

The BH1750 has six different measurement modes which are divided in two groups; continuous and one-time measurements. In continuous mode the sensor continuously measures lightness value. In one-time mode, the sensor makes only one measurement and then goes into Power Down mode.

Each mode has three different precisions:

  • Low Resolution Mode - (4 lx precision, 16ms measurement time)
  • High Resolution Mode - (1 lx precision, 120ms measurement time)
  • High Resolution Mode 2 - (0.5 lx precision, 120ms measurement time)

Wiring example

Application Examples and software:

SEN04044

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