led_matrix_monitoring

This service collects metrics and renders them on Framework 16" LED matrix using LED Matrix Daemon. All in all, it just renders a PNG image with the metrics and sends it to the daemon responsible for rendering it on LED matrix.

Features

Metric collectors:

• CPU usage
• Memory % usage
• Disk IO usage
• Network usage
• CPU Temperature
• Battery Level

Widgets:

• Network/disk plot
• Temperature bar
• Battery level bar
• CPU usage bar per core + average
• Memory usage bar

Installation

NixOS

Add the flake to your NixOS configuration:

{
  inputs.led-matrix-monitoring.url = "github:night-crawler/led_matrix_monitoring";

  outputs = { self, nixpkgs, led-matrix-monitoring, ... }: {
    nixosConfigurations.your-hostname = nixpkgs.lib.nixosSystem {
      # ...
      modules = [
        led-matrix-monitoring.nixosModules.default
        {
          services.led-matrix-monitoring = {
            enable = true;
            settings = {
              # Override default settings from example_config.toml
              # Note: socket path is automatically set if led-matrix-daemon is configured
              # You only need to set it manually if you want to override the automatic configuration
              # socket = "/run/led-matrix/led-matrix.sock";
              collector.max_history_samples = 20;
              collector.sample_interval = "200ms";
            };
          };
        }
      ];
    };
  };
}

Arch Linux

yay -S led_matrix_monitoring

Enable daemon with default configuration:

sudo systemctl enable --now led_matrix_monitoring.service

Build

Install Rust:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Check out the repository and build the binary:

git clone https://github.com/night-crawler/led_matrix_monitoring.git
cd led_matrix_monitoring
cargo build --release

Copy the binary to a location in your path:

sudo cp ./target/release/led_matrix_monitoring /usr/local/bin

Configuration

Take a look at example_config.toml.

In the collector section, everything that takes a list of values will produce an average of those values. You might want to change widget position here and there.