A python library for accessing the VEML6070 digital UV light sensor from Vishay
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
cn 2cf9c87a8d module: add Make target for rebasing three branch 1 月之前
.github module: set Dependabot commit message prefix 1 月之前
tests module: use yapf formatter, reduce pylint warnings 1 月之前
veml6070 module: use yapf formatter, reduce pylint warnings 1 月之前
.editorconfig module: add editorconfig 1 月之前
.gitignore module: adopt poetry dependency manager 1 月之前
.pylintrc module: use yapf formatter, reduce pylint warnings 1 月之前
.style.yapf module: use yapf formatter, reduce pylint warnings 1 月之前
.travis.yml module: add Makefile for development commands 1 月之前
LICENSE Initial commit 4 年之前
Makefile module: add Make target for rebasing three branch 1 月之前
README.md module: add Makefile for development commands 1 月之前
demo.py module: use yapf formatter, reduce pylint warnings 1 月之前
pyproject.toml module: adopt poetry dependency manager 1 月之前

README.md

python-veml6070

Build Status

A Python library for accessing the VEML6070 digital UV light sensor from Vishay via python-smbus using the I2C interface.

Default settings are suitable for Raspberry Pi 2 and 3 and was successfully tested using a breakout.

I created this Python library in style of e.g. python-tsl2591 (of the TSL2591 light sensor) since I found either python code broken for my hardware or code targeted at Arduino.

Usage

Consult the datasheet, the application notes and see demo.py for clues how to use this library.

Not all functions of the chip are supported, especially not the interrupt handling since I had no use for this. Please send pull requests for improvements and bug fixes!

Serious Flaws before September 2019

In September 2019 it was discovered (and fixed) that:

  • previously the sensor was never shutdown between measurements which wastes power but still takes measurements successfully
  • the UVA light intensity was calculated wrongly (too high) for rset != RSET_240K due to wrong compensation: higher rset leads to higher sampling time leads to higher absolute ADC step counts which should lead to every ADC step indicating a smaller amount of W/(m*m) of UVA power and a higher precision of the final UVA power but it wrongly behaved the opposite way. The integration_time worked correctly all the time.

Develop

Run make help to find out about the available development commands.

License

Python files in this repository are released under the MIT license.