A
Anonymous
Apr 11, 2026
Rating: 4/5
Great for Learning
Good value for money. Helps understand I2C communication protocols in practice.
Description
GY-2561 TSL2561 Light Intensity Module, Specializing in Components for 22 Years
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Chip Model | TSL2561 |
| Communication Interface | I2C |
| Operating Voltage | 3.3V to 5V DC |
| Light Measurement Range | 1 to 40,000 Lux |
| Output Signal | Digital |
| Board Dimensions | 25 x 15 x 3 mm |
| Weight | 3 grams |
| Spectrum Response | Visible and Infrared |
| Integration Time | Programmable (13ms to 402ms) |
| Mounting Holes | 2 x 3mm |
5 reviews
A
Anonymous
Apr 04, 2026
Rating: 5/5
Perfect for Arduino Projects
Works flawlessly with my Arduino Uno. The library support is great and readings are consistent.
A
Anonymous
Mar 15, 2026
Rating: 5/5
Reliable Light Data
Using this for a solar tracker project. Very stable output even with changing conditions.
A
Anonymous
Mar 01, 2026
Rating: 5/5
Raspberry Pi Compatible
Connected easily to GPIO pins. No issues with voltage levels on the Pi 4.
A
Anonymous
Feb 16, 2026
Rating: 4/5
Good Sensor Module
Accurate readings for indoor lighting. Instructions could be clearer for beginners.
5 FAQ
Q: Is there a specific library available for this sensor?
A: Yes, the Adafruit TSL2561 library is fully compatible and easy to use.
Q: How many wires are needed for connection?
A: Typically 4 wires are required: VCC, GND, SDA, and SCL.
Q: Can it measure direct sunlight accurately?
A: It handles up to 40k Lux. Indirect sunlight is fine, but direct sun may saturate the sensor.
Q: Can this work with 5V logic levels?
A: Yes, the module supports 3.3V to 5V input voltage safely.
Q: What is the default I2C address for this module?
A: The default I2C address is 0x39. It can be changed via hardware straps if needed.
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