• Lightrix: Drive Adafruit Neopixels over Matrix
  • Installation
  • Usage
    • Remote

Lightrix: Drive Adafruit Neopixels over Matrix

Installation

You will need a Raspberry Pi that is attached to your network. I am using a Raspberry Pi Model A+ due to its really adorable formfactor and the fact that I have some WiFi dongles laying about.

This is based on the rpi_ws281x library, and I ship an ansible playbook to provision it.

Remove the rrix.setup-home role from playbook.yaml and run:

ansible-playbook -i ../devops/hosts playbook.yaml --become

Yes, I install everything in to the main Python library path, because I'm an infoterrorist. It's an embedded Raspberry Pi, deal with it.

Usage

As root: (due to the DMA requirements)

• Create a ~/.mcatrc
• Run python ./lightrix.py -r "<YOUR ROOM ID>" -c ~/.mcatrc and it'll fire up
• Go in to the room in Vector or so and type "rainbow"

The playbook will install a systemd unit file lightrix.service which you can start and enable to your heart's content

Remote

There is also now a remote control included which you can run to allow you to control the lights from a web-page.

• Create a secrets.js which defines the following variables, and put it in remote/

  • accessToken: A valid access token which the webpage will use to make requests to the HS as
  • hs: A fully-qualified homeserver URL
  • uid: the UID that the accessToken represents.
  • rooms: an array of Room IDs which you can use to toggle to mutliple lightrix installations (assuming each one runs in its own room)
• run python -m SimpleHTTPServer in the remote/ directory
• browse to http://DOMAIN:8000 to view the remote