# Adafruit TSL2591 High Dynamic Range Digital Light Sensor ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/095/231/medium800/adafruit_products_TSL2591_top_angle.jpg?1601409165) 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) ![](https://cdn-learn.adafruit.com/assets/assets/000/095/230/medium800/adafruit_products_TSL2591_bottom.jpg?1601409155) 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. As if that weren't enough, we've also added[ SparkFun qwiic](https://www.sparkfun.com/qwiic) compatible **[STEMMA QT](https://learn.adafruit.com/introducing-adafruit-stemma-qt)** connectors for the I2C bus **so you don't even need to solder.** Just wire up to your favorite micro with a plug-and-play cable to get 6-DoF data ASAP. For a no-solder experience, just wire up to your favorite micro using a [STEMMA QT adapter cable.](https://www.adafruit.com/?q=stemma%20qt%20cable) The Stemma QT connectors also mean the TSL2591 can be used with our [various associated accessories.](https://www.adafruit.com/?q=JST%20SH%204) ![](https://cdn-learn.adafruit.com/assets/assets/000/095/229/medium800/adafruit_products_TSL2591_STEMMA_side.jpg?1601409142) 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. Info: ![](https://cdn-learn.adafruit.com/assets/assets/000/017/924/medium800/sensors_1980kit_ORIG.jpg?1405097894) - [Next Page](https://learn.adafruit.com/adafruit-tsl2591/pinouts.md) ## Primary Products ### Adafruit TSL2591 High Dynamic Range Digital Light Sensor [Adafruit TSL2591 High Dynamic Range Digital Light Sensor](https://www.adafruit.com/product/1980) 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... Out of Stock [Buy Now](https://www.adafruit.com/product/1980) [Related Guides to the Product](https://learn.adafruit.com/products/1980/guides) ## Related Guides - [I2C Addresses and Troublesome Chips](https://learn.adafruit.com/i2c-addresses.md) - [No-Code IoT Soil Sensor](https://learn.adafruit.com/soil-node.md) - [Adafruit PCA9548 8-Channel STEMMA QT / Qwiic I2C Multiplexer](https://learn.adafruit.com/adafruit-pca9548-8-channel-stemma-qt-qwiic-i2c-multiplexer.md) - [CircuitPython Essentials](https://learn.adafruit.com/circuitpython-essentials.md) - [Adafruit Ultimate GPS Logger Shield](https://learn.adafruit.com/adafruit-ultimate-gps-logger-shield.md) - [Build an ML Rock Paper Scissors Game with Lobe](https://learn.adafruit.com/lobe-rock-paper-scissors.md) - [Adafruit AirLift Shield - ESP32 WiFi Co-Processor](https://learn.adafruit.com/adafruit-airlift-shield-esp32-wifi-co-processor.md) - [Adafruit DVI Sock for Pico](https://learn.adafruit.com/adafruit-dvi-sock-for-pico.md) - [Adafruit MAX98357 I2S Class-D Mono Amp](https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp.md) - [Adafruit Circuit Playground Tri-Color E-Ink Gizmo](https://learn.adafruit.com/adafruit-circuit-playground-tri-color-e-ink-gizmo.md) - [FTDI Friend](https://learn.adafruit.com/ftdi-friend.md) - [Adafruit ESP32 Feather V2](https://learn.adafruit.com/adafruit-esp32-feather-v2.md) - [Adafruit ItsyBitsy nRF52840 Express](https://learn.adafruit.com/adafruit-itsybitsy-nrf52840-express.md) - [Adafruit SHT31-D Temperature & Humidity Sensor Breakout](https://learn.adafruit.com/adafruit-sht31-d-temperature-and-humidity-sensor-breakout.md) - [Adafruit 3.5" 320x480 Color TFT Touchscreen Breakout](https://learn.adafruit.com/adafruit-3-5-color-320x480-tft-touchscreen-breakout.md)