When the future is dazzlingly-bright, this ultra-high-range luminosity sensor will help you measure it. The TSL2591 luminosity sensor is an advanced digital light sensor, ideal
for use in a wide range of light situations. Compared to low cost CdS
cells, this sensor is more precise, allowing for exact lux calculations
and can be configured for different gain/timing ranges to detect light
ranges from up to 188uLux up to 88,000 Lux on the fly.
The best part of this
sensor is that it contains both infrared and full spectrum diodes!
That means you can separately measure infrared, full-spectrum or
human-visible light. Most sensors can only detect one or the other,
which does not accurately represent what human eyes see (since we cannot
perceive the IR light that is detected by most photo diodes)
This sensor is much like the TSL2561 but with a wider range (and the interface code is different). This sensor has a massive 600,000,000:1 dynamic range! Unlike the TSL2561 you cannot change the I2C address either, so keep that in mind.
The built in ADC means you can use this with any microcontroller, even
if it doesn't have analog inputs. The current draw is extremely low, so
its great for low power data-logging systems. about 0.4mA when actively
sensing, and less than 5 uA when in power-down mode.
This guide was first published on Jul 11, 2014. It was last
updated on Nov 19, 2018.
This page (Overview) was last updated on May 04, 2015.