simple python code for controlling a string of Alitove WS2811 RGB lights
warning: this is crap code
useful link for circuit: https://raspberrypi.stackexchange.com/questions/120494/how-do-i-connect-a-raspberry-pi-to-ws2811-led-lights-through-gpio18-pin
useful link for installing python libraries: https://opensource.com/article/21/1/light-display-raspberry-pi
sudo apt-get install python3-pip
Then install the following libraries:
- rpi_ws281x:
sudo pip3 install rpi_ws281x - Adafruit-circuitpython-neopixel:
sudo pip3 install Adafruit-circuitpython-neopixel - Adafruit-blinka:
sudo pip3 install Adafruit-blinka
note not all node versions work on RPi Zero.
other good stuff https://github.com/Ziagl/raspberry-pi-ws2811
References:
https://www.raspberrypi.com/documentation/computers/using_linux.html#creating-a-service
Creating a service in https://domoticproject.com/creating-raspberry-pi-service/
man 5 systemd.service
https://www.digitalocean.com/community/tutorials/understanding-systemd-units-and-unit-files
The file xmastreelights.service defines the service.
To install the service:
sudo cp xmastreelights.service /etc/systemd/system/
sudo systemctl daemon-reload
To start the service:
sudo systemctl start xmastreelights.service
To stop the service:
sudo systemctl stop xmastreelights.service
To restart the service:
sudo systemctl restart xmastreelights.service
Add the following to root's crontab with sudo crontab -e:
# Restart the Christmas tree light service every five minutes.
# Each time it restarts, it chooses a different program to run.
*/5 * * * * systemctl restart xmastreelights.service