https://github.com/julusian/rpi-ws281x-artnet

https://github.com/julusian/rpi-ws281x-artnet

Last synced: 23 days ago
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• Host: GitHub
• URL: https://github.com/julusian/rpi-ws281x-artnet
• Owner: Julusian
• License: mit
• Created: 2021-12-18T17:15:34.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2021-12-22T18:23:39.000Z (about 3 years ago)
• Last Synced: 2024-10-31T10:12:43.495Z (2 months ago)
• Language: Rust
• Size: 12.7 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        

### Hardware setup

This has only been tested on a 3B. More recent models may work, but may need code changes to use the correct GPIO pins.

Note: It is compiled for arm7, this can likely be changed without issue

Connect up the data line and ground of the lights to the pi for PWM mode as descibed [here](https://github.com/jgarff/rpi_ws281x#gpio-usage).  

The application is expecting GPIO12, so pin 32 should be used (pin 30 is conveniently a GND).

### Compiling

This assumes you are on linux, to compile from other platforms the steps will need adjusting

* Install Rust from [rustup.rs](https://rustup.rs/)

* Add the arm7 target `rustup target add armv7-unknown-linux-gnueabihf`

* Install required libs `sudo apt install libclang-dev gcc-arm-linux-gnueabihf`

* Build it `cargo build --release`

* The resulting binary `./target/armv7-unknown-linux-gnueabihf/release/pi-ws281x-artnet` can be copied to the pi

### Installing

Copy the binary to the raspberry pi

* Create the file `/etc/systemd/system/ws281x.service`

```

[Unit]

Description=WS281x Artnet

After=network-online.target

Wants=network-online.target

[Service]

Type=simple

User=root

WorkingDirectory=/home/pi

ExecStart=/home/pi/pi-ws281x-artnet

Restart=on-failure

KillSignal=SIGINT

TimeoutStopSec=60

[Install]

WantedBy=multi-user.target

```

* `sudo systemctl daemon-reload`

* `sudo systemctl enable ws281x.service`

* `sudo systemctl start ws281x.service`