A server for the Raspberry Pi created with the AnimatedLEDStrip server library and rpi-ws281x-java.
To install this server on a Raspberry Pi, run
curl -s https://animatedledstrip.github.io/install/install-pi-server.sh | sudo bashThis will install the server on your Pi and add it as a systemd service that runs on startup.
See the Adafruit NeoPixel Überguide for a good introduction to ws281x LEDs, specifically their NeoPixels.
With the default configuration, the data should be connected to GPIO 12 (physical pin 32). If you set the pin to a different number, check a pin diagram for the Pi to check what physical pin to connect to. Check the rpi_ws281x library for which pins are supported, which protocols they correspond to, and other notes about the protocols.
The ground should be connected to one of the ground pins on the Pi (physical pins 6, 9, 14, 20, 25, 30, 34 and 39). The ground should also be connected to the ground of the power supply.
The Adafruit NeoPixel Überguide has good tips for powering the LEDs.
Be careful when working with electricity
To borrow words from the rpi_ws281x library: Know what you're doing with the hardware and electricity. I take no reponsibility for damage, harm, or mistakes.
If your strip is short enough, you may be able to connect the power to the 5V power on the Pi (physical pins 2 and 4). You should do some math to determine what power supply to use, especially if you plan to power them off the Pi. Read this first if you plan to do this.
The config file is located at /etc/leds/led.config.
See the AnimatedLEDStrip server wiki for instructions on configuring the server.
If you need to update the server with a new version, i.e. a development version, you can use the ./deploy.bash script.
The script packages the server on your computer, then copies it to any hosts you specify and restarts them.
To specify which hosts to update, add -H flags for each host's IP or user@IP, i.e.:
./deploy.bash -H 10.0.0.254 -H user2@10.0.0.253If no user is specified, pi is assumed as default.
To specify a specific settings.xml file to use for mvn, use the -s flag:
./deploy.bash -H 10.0.0.254 -H user2@10.0.0.253 -s ./settings.xml