TSL2591 Digital Light Sensor Breakout Module
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The Story
The TSL2591 is a high-sensitivity digital light sensor breakout module that provides accurate lux measurements across a wide dynamic range. Featuring both infrared and full-spectrum diodes, it can measure infrared, full-spectrum, or human-visible light. With a built-in ADC and I2C interface, it easily integrates with any microcontroller, making it ideal for ambient light sensing, display backlight control, and low-power data logging applications.
add_circle The Upside
- check Extremely accurate and precise lux measurements
- check Low power consumption (0.4mA active, <5µA standby)
- check Easy to interface with any microcontroller via I2C
remove_circle The Downside
- close Fixed I2C address cannot be changed
- close Requires careful soldering for breadboard use
- close No analog output; digital only
Specifications & features
Key features
- check_circle High dynamic range of 600,000,000:1
- check_circle Measures up to 88,000 lux with 188 µlux resolution
- check_circle Dual photodiodes: infrared and full-spectrum
- check_circle I2C interface with fixed address 0x29
- check_circle Wide operating voltage: 3.3V to 5.0V
Specifications
Dimensions
19mm x 16mm x 1mm
Dynamic Range
600,000,000:1
Interface Type
I2C
Lux Range
188 µlux to 88,000 lux
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