Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	GY-30
Sensor Chip	BH1750FVI
Communication Interface	I2C
Supply Voltage	3.3V - 5V DC
Measurement Range	1 - 65535 Lux
Resolution	1 Lux
Operating Temperature	-15°C to +70°C
Board Dimensions	14mm x 19mm
Weight	2.5g
Application	Arduino, Raspberry Pi, IoT Projects

6 reviews

Anonymous

Mar 23, 2026

Rating: 4/5

Solid build quality

The PCB looks clean and the soldering is neat. Readings are repeatable. I deducted one star only because the pin headers were not included, but that's a minor issue.

Anonymous

Mar 23, 2026

Rating: 5/5

Reliable for plant monitoring

Using this to monitor sunlight exposure for my indoor garden. It handles the range from dim indoor light to direct sunlight near the window without saturating immediately. Very satisfied.

Anonymous

Mar 18, 2026

Rating: 5/5

Best budget light sensor

Compared to other modules I've tried in this price range, the BH1750FVI chip offers superior accuracy. It's now my go-to choice for any project requiring ambient light detection.

Anonymous

Mar 14, 2026

Rating: 4/5

Good sensor, needs pull-up resistors

The module itself is excellent and accurate. Just remember that you might need external pull-up resistors on the SDA and SCL lines depending on your microcontroller board. Once sorted, it works great.

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect for my weather station

This sensor works flawlessly with my Arduino setup. The I2C communication is stable, and the lux readings are consistent with my standalone light meter. Great value for the price.

Anonymous

Mar 11, 2026

Rating: 5/5

Easy to integrate

I used this for a university project on smart lighting. The library support for ESP32 is abundant, making integration very quick. Data output is smooth and responsive to light changes.

5 FAQ

Q: Can this measure UV index?

A: No, the BH1750FVI chip measures visible light intensity in Lux. It is not designed to measure Ultraviolet (UV) radiation specifically.

Q: What is the maximum distance for I2C communication with this sensor?

A: For reliable I2C communication, it is recommended to keep the wire length under 30cm (approx. 1 foot). For longer distances, you may need an I2C extender or buffer.

Q: Is this module compatible with 5V Arduino Uno?

A: Yes, the GY-30 module operates within a 3.3V to 5V range, so it is fully compatible with the 5V logic of the Arduino Uno.

Q: Does this come with example code for Raspberry Pi?

A: While the package does not include a physical manual with code, we provide a link in the product description to a GitHub repository containing Python examples for Raspberry Pi and C++ for Arduino.

Q: How do I change the measurement resolution?

A: The resolution can be changed via software commands sent over the I2C bus. The datasheet details the specific register bits to set for High, Low, or Auto resolution modes.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

3-Wire/4-Wire Flame Sensor Module, Fire Source Detection with IR Receiver, Flame Detection and Alarm

$1.08

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

HX711 Pressure Sensor Module Electronic Scale Bracket Weighing DIY Scale Pan Tray Set 5/10/40kg200

$3.28

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

DHT22 Single-Bus Digital Temperature & Humidity Sensor AM2302 Module Electronic Building Blocks

$10.42

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39