Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Interface Type | I2C / IIC |
| Operating Voltage | 3.3V - 5V DC |
| Light Measurement Range | 1 - 65535 Lux |
| Sensor Resolution | 1 Lux |
| Chip Model | BH1750FVI |
| PCB Dimensions | 17mm x 19mm |
| Weight | 2 grams |
| Microcontroller Compatibility | Arduino, ESP8266, Raspberry Pi |
| Response Time | Approx. 120ms |
| Package Content | 1 x GY-30 Sensor Module |
Anonymous
Mar 28, 2026
Rating: 5/5
Compact and reliable
Used this for a light-following robot. The response time is quick enough for my application.
Anonymous
Mar 21, 2026
Rating: 4/5
Good but needs pull-ups
Sensor works well but remember to check if your board has I2C pull-up resistors. Otherwise solid module.
Anonymous
Mar 05, 2026
Rating: 5/5
Accurate readings
Compared it with a professional lux meter and the readings were very close. Great value for the price.
Anonymous
Feb 12, 2026
Rating: 5/5
Perfect for Arduino projects
Works exactly as described. Easy to wire up with the standard I2C library. Reading lux values is straightforward.
Anonymous
Feb 10, 2026
Rating: 5/5
Great for smart home
Integrated this with ESP8266 to control lights based on ambient brightness. No issues so far.
Q: Does it come with a library?
A: No, but there are many open-source libraries available for Arduino and ESP platforms.
Q: Is this compatible with 5V Arduino Uno?
A: Yes, the module supports 3.3V to 5V input voltage.
Q: How many wires are needed?
A: You need 4 wires: VCC, GND, SDA, and SCL.
Q: Can this be used outdoors?
A: It can measure outdoor light, but the module itself is not waterproof. Please enclose it properly.
Q: What is the default I2C address?
A: The default address is typically 0x23, but it can vary slightly depending on the batch.
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