# Adafruit VEML6070 UV Sensor Breakout

## Overview

![](https://cdn-learn.adafruit.com/assets/assets/000/032/483/medium800/force___flex_2899_iso_ORIG.jpg?1463432778)

This little sensor is a great way to add UV light sensing to any microcontroller project. The VEML6070 from Vishay has a true UV A light sensor and an I2C-controlled ADC that will take readings and integrate them for you over ~60ms to 500ms.

Unlike the [Si1145](https://www.adafruit.com/products/1777), this sensor will not give you UV Index readings. However, the Si1145 does UV Index approximations based on light level not true UV sensing. The VEML6070 in contrast does have a real light sensor in the UV spectrum. It's also got a much much simpler I2C interface so you can run it on the smallest microcontrollers with ease.

Unlike the [GUVA analog sensor](https://www.adafruit.com/products/1918), the biasing and ADC is all internal so you don't need an ADC.

![](https://cdn-learn.adafruit.com/assets/assets/000/032/484/medium800/force___flex_2899_kit_ORIG.jpg?1463433365)

This UV sensor works great with 3 or 5V power or logic, its nice and compact, and its easy to use with any I2C-capable microcontroller.

Each order comes with one assembled PCB with a sensor, some handy pullup resistors, a 270K rset resistor and a small piece of header. Some light soldering is required to attach the header but its a fast task!

- [Next Page](https://learn.adafruit.com/adafruit-veml6070-uv-light-sensor-breakout/pinouts.md)

## Featured Products

### Adafruit VEML6070 UV Index Sensor Breakout

[Adafruit VEML6070 UV Index Sensor Breakout](https://www.adafruit.com/product/2899)
[Discontinued - **you can grab** Adafruit LTR390 UV Light Sensor - STEMMA QT / Qwiic **instead! **](https://www.adafruit.com/product/4831)

This little sensor is a great way to add UV light sensing to any microcontroller project. The VEML6070 from Vishay has a true...

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