Welcome back, in this post I will cover connecting, testing and integrating the [VEML 6070 sensor](https://www.adafruit.com/product/2899) with the raspberry Pi3 and Ros2.  The VEML 6070 is a UV light sensor.


![serveimage.gif](https://cdn.steemitimages.com/DQmY5PjVvF5CWieSXYM215y8BK7Qaw4QjSKyjJeAw1f1dYf/serveimage.gif)


# Connecting and Testing

Used the following [guide](https://learn.adafruit.com/adafruit-veml6070-uv-light-sensor-breakout/python-circuitpython) from adafruit to wire, start up example code and test that the device was working.  To start I had to remove the [BME 280 sensor](https://www.adafruit.com/product/2652) and connect just the UV sensor to the raspberry Pi.  I added a small bread board instead of directly connecting the UV sensor during this step so I could more easily add back in the BME 280 sensor.

# Adding Ros2 

Added another ros node to the project called [VEML6070_sensor.py](https://gitlab.com/Robotjini/mimir/-/blob/master/mimir/VEML6070_sensor.py).  The node publishes the raw UV value reported by the sensor and its danger level as interpreted by the sensors code.  These are published on topics /veml6070_uv and /veml6070_uv_risk.

Check out the third blog for information on downloading and using the code, please like and subscribe.

1. [Building a Custom Weather Station in ROS2 Parts and Plans (DIY BLOG)](https://beta.steemit.com/ros2/@robotjini/1-building-a-custom-weather-station-in-ros2-parts-and-plans-diy-blog)
2. [Custom Weather Station: Installing Ros2 (DIY BLOG)](https://beta.steemit.com/diy/@robotjini/2-custom-weather-station-installing-ros2-diy-blog)
3. [Custom Weather Station: Temperature, Pressure, Humidity Sensor Install](https://steemit.com/diy/@robotjini/5tdps3-3-custom-weather-station-temperature-pressure-humidity-sensor-install)