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The light sensor is a passive device that produces an electrical signal from the light energy. Because they transform light energy (photons) into an electronic signal (electrons), light sensors are more commonly referred to as Photoelectric Devices or Photo Sensors.
The Global digital light sensor market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
A sophisticated digital light sensor with a wide range of lighting conditions is the TSL2561 luminosity sensor. This sensor is more accurate than cheap CdS cells, enabling precise lux calculations. It can be set up for various gain/timing ranges to detect light ranges from up to 0.1 to 40,000+ Lux instantly.
The fact that this sensor has both infrared and full spectrum diodes is its best feature. This implies that you can measure infrared, full-spectrum, or human-visible light separately.
The majority of sensors can only detect one or the other, which is not an accurate representation of what the human eye sees. There is a digital (i2c) interface on the sensor.
Three addresses are available, allowing you to place up to three sensors on one board, each with a unique I2C address. Because it has an integrated ADC, you can use it with any microcontroller, even one without analogue inputs.
The extremely low current draw makes it ideal for low power data-logging systems. less than 15 uA when in power down mode and about 0.5mA when actively sensing.
