Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	GY-302
Sensor Chip	BH1750FVI
Communication Interface	I2C
Operating Voltage	3.3V - 5V
Measurement Range	1 - 65535 Lux
Resolution	1 Lux
Spectral Sensitivity	Close to human eye response
Board Dimensions	22mm x 18mm
Included Software	Arduino Example Code
Application	Smart lighting, agriculture monitoring, robotics

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Consistent data output

Been running this for a week logging lux data every minute. No dropouts or weird spikes. Highly recommended for long-term environmental monitoring.

Anonymous

Mar 26, 2026

Rating: 5/5

Compact and reliable

The small form factor fits perfectly into my robot chassis. I2C communication is stable, and it handles voltage fluctuations well between 3.3V and 5V.

Anonymous

Mar 26, 2026

Rating: 4/5

Easy to use for beginners

As someone new to sensors, I appreciated the clear pin labeling. The only reason for 4 stars is that the header pins were not pre-soldered, but that's minor.

Anonymous

Mar 13, 2026

Rating: 4/5

Good value, accurate enough

For the price, this is an excellent light sensor. It's not laboratory-grade precision, but for home automation triggers, it is more than accurate enough.

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect for Arduino projects

This sensor works flawlessly with my Arduino Uno. The included code made setup incredibly easy, and the readings are consistent across different lighting conditions.

Anonymous

Mar 12, 2026

Rating: 5/5

Great for plant monitoring

I used this to build a sunlight tracker for my indoor garden. The spectral sensitivity seems very close to how humans perceive light, which is exactly what I needed.

5 FAQ

Q: Does it come with header pins soldered?

A: Typically, these modules are shipped with unsoldered header pins to allow for flexible mounting options, but some batches may vary. Please check your specific package upon arrival.

Q: Does this module work with Raspberry Pi?

A: Yes, the GY-302 uses the I2C protocol, which is fully compatible with Raspberry Pi GPIO pins. You will just need to enable the I2C interface in your Pi settings.

Q: Is the library compatible with ESP32 boards?

A: Absolutely. The BH1750 library works seamlessly with ESP32, ESP8266, and standard Arduino boards. The example code provided covers these platforms.

Q: What is the maximum distance for reliable I2C communication?

A: For standard I2C speeds, we recommend keeping the cable length under 30cm (approx. 1 foot) without pull-up resistor adjustments to ensure signal integrity.

Q: Can this sensor measure UV light intensity?

A: No, the BH1750FVI chip is designed to measure visible light intensity (Lux) and mimics human eye sensitivity. It does not specifically isolate or measure UV radiation.

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