Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | GY-30 / BH1750FVI |
| Operating Voltage | 3.3V - 5V DC |
| Interface Type | I2C (Two-Wire Serial) |
| Measurement Range | 1 - 65535 Lux |
| Resolution | 1 Lux |
| Spectral Response | Close to Human Eye Sensitivity |
| Conversion Time | Approx. 120ms |
| Board Dimensions | 22mm x 18mm x 3mm |
| Mounting Holes | 2 x 3mm Diameter |
| Compatibility | Arduino, Raspberry Pi, ESP32, STM32 |
Anonymous
Mar 25, 2026
Rating: 4/5
Good accuracy, easy setup
Used this to automate my living room lights based on ambient light. It's quite accurate compared to my phone's sensor. Only wish the pins were labeled more clearly on the back.
Anonymous
Mar 25, 2026
Rating: 5/5
Reliable I2C communication
Integrated this into a mobile robot for line following and environmental mapping. The I2C address is standard, and it plays nice with other sensors on the bus.
Anonymous
Mar 16, 2026
Rating: 4/5
Works well outdoors with protection
I enclosed it in a waterproof case for my garden monitoring system. It handles sunlight variations well, though direct noon sun maxes out the reading slightly.
Anonymous
Mar 14, 2026
Rating: 5/5
Perfect for Arduino Projects
This sensor works flawlessly with my Arduino Uno. The library support is excellent, and reading lux values was straightforward. Great value for the price.
Anonymous
Mar 08, 2026
Rating: 5/5
Great starter sensor
As a beginner, I found this very easy to wire up. Plenty of tutorials online. It responded immediately to changes in light intensity in my room.
Anonymous
Mar 07, 2026
Rating: 5/5
Consistent readings
Very stable output. No noisy data spikes like some cheaper photoresistors. The digital output saves me from having to calibrate an ADC.
Q: Can I use this to measure UV index?
A: No, this sensor measures visible light intensity (Lux) and is calibrated to human eye sensitivity. It does not specifically measure UV radiation.
Q: What is the default I2C address for this sensor?
A: The default I2C address is typically 0x23. Some variants may use 0x5C depending on the ADDR pin configuration, but 0x23 is the most common for this breakout.
Q: Does this module work with 5V logic levels directly?
A: Yes, the GY-30 module includes a voltage regulator and level shifting, so it can be safely connected to 5V microcontrollers like the Arduino Uno.
Q: How do I change the measurement resolution?
A: Resolution is changed via software commands sent over I2C. You can select between High, Low, or Auto-resolution modes by writing specific configuration bytes to the sensor.
Q: Is there a library available for ESP32?
A: Yes, there are several open-source libraries available in the Arduino IDE Library Manager that support the BH1750 sensor on ESP32 platforms.
Hahnemühle Renamed Canson New Moulin Watercolor Paper - Cotton Pulp - UK Hahnemühle Original Paper for Colored Pencils - High White and Natural White
$10.50
Biliansheng Hair Transplant: Hairline Restoration and Top Density Enhancement
$10,000.00
Yingtou NO.9 Nylon Scouring Pad Roll - Industrial Rust Removal and Cleaning Cloth Manufacturer
$84.00
PELICAN 1170 Safety Protective Case Outdoor Waterproof Case Pelican Small Moisture-Proof Bracelet Case Free Shipping
$595.00
Disposable Face Towel Storage Box Wall-Mounted for Bathroom
$8.42
Traditional Handmade Sheepskin Rattle Drum for Babies - Wooden Non-Toxic Teething Toy for Early Education (Intangible Cultural Heritage)
$25.90
Commercial Vegetable Cutter for Chili, Branches, Pandan Leaves; Dicing and Slicing Machine; 304 Stainless Steel Bean Cutter
$18,630.00
Heavy-Duty Paper Cutter Parts - 20-Year Shandong Store Blade Holder Wooden Block Replacement Pad
$50.00
Ammonia Decomposition Hydrogen Production Equipment, Ammonia Cracking Furnace, Liquid Ammonia to Hydrogen System, Air Separation Unit
$15,479.00
Strawberry Planting Trough - Soil-Free A-Frame Vertical Planter for Vegetables and Fruits
$14.80
Forged Steel Wheel Hub Bolts Grade 12.9 Extended Screws Fade-Resistant for VW, Audi, Mercedes-Benz, BMW
$95.00
Retainer Storage Case Orthodontic Appliance Soaking Cleaning Box Portable Invisible Aligner Holder for Dentures
$2.80
Baby Sheepskin Rattle and Shaker Stick - Brass and Peach Wood, Old-Style Handmade, Chewable, Newborn Gift Box
$74.00
Portable Orthodontic Retainer Cleaning Case - Rotating Travel Box for Invisible Aligners
$17.60
Full Denture Soaking and Storage Box with Filter Net for Retainers and False Teeth
$4.80
Anka Bella Face Painting Pen Facial Special Brush Embossing Pen Line Drawing Petal Professional Pigment Pen
$4.17
Balloon Warm Star Pre-sale: Do You Have an Illness? Phase 1 - Clash of Hearts Little Chu Su Series Merchandise
$16.00
Car Tire Stone Removal Hook - Portable Multi-function Tool for Cleaning Gravel from Tire Treads
$7.00
Imported TRANS Gearbox Eccentric Bearing 614 59 7187 616 0608 11-15 11 YSX
$183.00
Sichuan Rongxian Earthware Minfeng Wine Jar, Home Pottery with Porcelain Liner, 600-Jin Unglazed Sealed Fermentation Vessel for Homemade Liquor
$901.00
Garlic Drum Sorting Machine - Single-Clove Garlic Grading Separator and Onion Sizing Sorter - Factory Direct Sales
$38,080.00
Aizaofang Food-Grade Soft Silicone Handmade Soap Mold Korean Rectangular 3D Tree Shadow Silicone Mold
$23.00
JMC Yusheng & Yuhu Parts – Crankshaft Position Sensor, Signal Sensor, Original Equipment
$95.00
![[10% Off for 2 Items] Calligraphy Wool Felt Mat - Double-Sided Painted Practice Pad for Students, Bulk Wholesale, Includes Arm Rest and Four Treasures of the Study Set](https://www.gosteppe.com/cache/small/product/269490/legacy-main-410a655856aab1e0462d6c84.webp)
[10% Off for 2 Items] Calligraphy Wool Felt Mat - Double-Sided Painted Practice Pad for Students, Bulk Wholesale, Includes Arm Rest and Four Treasures of the Study Set
$6.63
Leak-Proof Retainer Case with Double-Layer Filter for Braces, Aligners, and Dentures - Portable Cleaning and Soaking Box
$22.50
Car Tire Stone Removal Hook Tool, Explosive Tire Prevention Gadget, Durable Zinc Alloy Tire Cleaning Hook for Automotive Care
$10.90
![[Damai Micro-Needle Hair Transplant Patent] Micro-Needle Planting (500 Units) - Suitable for Temples and Hairline](https://www.gosteppe.com/cache/small/product/269486/legacy-main-da7e0cd07f3b7d2f88646684.webp)
[Damai Micro-Needle Hair Transplant Patent] Micro-Needle Planting (500 Units) - Suitable for Temples and Hairline
$4,500.00
Japan Original FEC Lifting Chain - Specialized for Electric Hoist, 6.3mm Diameter Carburized Lifting Chain
$223.00
X-RAY Coating Thickness Gauge - Desktop Tianrui Professional Analyzer for Metal Electroplating Layers
$9,589.60
Heavy Truck Tire Cleaning Strips - Wear-Resistant Mud Flaps and Inner Tube Skirts - Decorative Tire Tassels
$9.05
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
