Introduction

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CircuitPython library to support VEML6075 UVA & UVB sensor.

Dependencies

This driver depends on:

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.

Usage Example

import time
import board
import busio
import adafruit_veml6075

i2c = busio.I2C(board.SCL, board.SDA)

veml = adafruit_veml6075.VEML6075(i2c, integration_time=100)

while True:
    print(veml.uv_index)
    time.sleep(1)

Contributing

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

Building locally

Zip release files

To build this library locally you’ll need to install the circuitpython-build-tools package.

python3 -m venv .env
source .env/bin/activate
pip install circuitpython-build-tools

Once installed, make sure you are in the virtual environment:

source .env/bin/activate

Then run the build:

circuitpython-build-bundles --filename_prefix adafruit-circuitpython-veml6075 --library_location .

Sphinx documentation

Sphinx is used to build the documentation based on rST files and comments in the code. First, install dependencies (feel free to reuse the virtual environment from above):

python3 -m venv .env
source .env/bin/activate
pip install Sphinx sphinx-rtd-theme

Now, once you have the virtual environment activated:

cd docs
sphinx-build -E -W -b html . _build/html

This will output the documentation to docs/_build/html. Open the index.html in your browser to view them. It will also (due to -W) error out on any warning like Travis will. This is a good way to locally verify it will pass.

Table of Contents

Simple test

Ensure your device works with this simple test.

examples/veml6075_simpletest.py
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import time
import board
import busio
import adafruit_veml6075

i2c = busio.I2C(board.SCL, board.SDA)

veml = adafruit_veml6075.VEML6075(i2c, integration_time=100)

print("Integration time: %d ms" % veml.integration_time)

while True:
    print(veml.uv_index)
    time.sleep(1)

adafruit_veml6075

CircuitPython library to support VEML6075 UVA & UVB sensor.

  • Author(s): ladyada

Implementation Notes

Hardware:

Software and Dependencies:

class adafruit_veml6075.VEML6075(i2c_bus, *, integration_time=50, high_dynamic=True, uva_a_coef=2.22, uva_b_coef=1.33, uvb_c_coef=2.95, uvb_d_coef=1.74, uva_response=0.001461, uvb_response=0.002591)

Driver base for the VEML6075 UV Light Sensor :param i2c_bus: The busio.I2C object to use. This is the only required parameter. :param int integration_time: The integration time you’d like to set initially. Availble options - each in milliseconds: 50, 100, 200, 400, 800. The higher the ‘_x_’ value, the more accurate the reading is (at the cost of less samples per reading). Defaults to 100ms if parameter not passed. To change setting after intialization, use [veml6075].integration_time = new_it_value. :param bool high_dynamic: whether to put sensor in ‘high dynamic setting’ mode :param float uva_a_coef: the UVA visible coefficient :param float uva_b_coef: the UVA IR coefficient :param float uvb_c_coef: the UVB visible coefficient :param float uvb_d_coef: the UVB IR coefficient :param float uva_response: the UVA responsivity :param float uvb_response: the UVA responsivity

integration_time

The amount of time the VEML is sampling data for, in millis. Valid times are 50, 100, 200, 400 or 800ms

uv_index

The calculated UV Index

uva

The calibrated UVA reading, in ‘counts’ over the sample period

uvb

The calibrated UVB reading, in ‘counts’ over the sample period

Indices and tables