Send UV index reading from a veml6070 to a VSCP daemon
This code is built on code made by ControlEverything.com.
i2c support must be enabled. Use raspi-config to enable i2c.
To verify your hardware you can use i2ctools. Install with
sudo apt install i2c-tools
scan bus with
i2cdetect 1
you will get something like
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- 38 -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
as output.
The 38 is the address of the VEML6070 UV sensor.
You also need to install smbus support for python. Install with
pip3 install smbus
UV index is a defined as a value in the range 0-15 where >= 11 is extreme values and 0-2 low values. You may need to set the SCALING_FACTOR in the source file for this code to work correctly with your hardware.
vscp_send_veml6070.py host user password [guid] [sensorindex] [zone] [subzone]| Parameter | Description |
|---|---|
| host | VSCP host to connect to |
| user | VSCP user to connect as |
| password | VSCP password |
| guid | Optional. GUID to use for the sensor. Default to "-", the daemons interface GUID. |
| sensorindex | Optional. Index of the sensor to use. Defaults to zero. |
| zone | Optional. Zone to use for the sensor. Default to zero. |
| subzone | Optional. Subzone to use for the sensor. Defaults to zero. |
Typically you would run this script as a cronjob to send data every minute or so.
./vscp_send_veml6070.py localhost admin secret - 0 0 0
Send a reading to a VSCP daemon on the local host using the interface GUID and setting sensorindex, zone and subzone all to zero. This is the same as using
./vscp_send_veml6070.py localhost admin secret
where default values are used for the sensorindex, zone and subzone.
Part of the VSCP (Very Simple Control Protocol) project