I have WS2812b LED strip in my home office that is controlled by a Raspberry Pi.
This repository contains the code that I use to control the lights from the Pi.
home_office_lights.py is designed to run as a service via systemctl. This will respond to messages on a Redis queue,
translating each message into rpi_ws281x commands. This has been designed this way so that the light strip can
easily be controlled by other devices by publishing messages to the redis queue.
All of the following steps should be run on the Raspberry Pi controlling the lights. This codebase assumes that the lights are running off of GPIO-18.
- Install
rpi_ws281x - Checkout this repository to
/srv/home-office-lights - Install redis using:
sudo ./install-redis.sh - Install
home_office_lights.pyas a service using:sudo ./install-office-lights.sh 192.168.1.10. The IP address should be the IP of your Raspberry Pi.
That's it, the service (home-office-lights.service) is up and running and is controlled by systemctl.
On any machine running python3 with PyRSMQ installed you can run any of these examples:
REDIS=192.168.1.10 python3 home_office_lights.py '{"type": "solid-colour","r": 255, "g": 64, "b": 0}'
REDIS=192.168.1.10 python3 home_office_lights.py '{"type": "alert","r": 128, "g": 0, "b": 128}'
REDIS=192.168.1.10 python3 home_office_lights.py '{"type": "off"}'
REDIS=192.168.1.10 python3 home_office_lights.py '{"type": "on"}'
The lights can be controlled from an iPad using Pythonista.
Here is a simple script and GUI that I use to control the lights from the iPad.
The following basic scripts are designed to be run on the Raspberry Pi and execute commands via rpi_ws281x.
- off.py
Turns the light strip off - orange.py
Sets the light strip to a solid orange colour - temp-monitor.py
Logs out temperature readings periodically to a file assuming you have a DHT22 using GPIO pin 17 for data.
Sample Crontab Setup
Monitor temperature every minute. Turn the lights on orange at 08:00 and turn them off at 21:00 everyday.
TZ=Europe/London
* * * * * sudo python3 /home/pi/home-office-lights/temp-monitor.py
0 8 * * * sudo python3 /home/pi/home-office-lights/orange.py
0 21 * * * sudo python3 /home/pi/home-office-lights/off.py