# Noisebell

Monitors the door at [Noisebridge](https://www.noisebridge.net) and tells you whether it's open or closed.

A Raspberry Pi reads a magnetic sensor on the door and pushes state changes to a cache server. The cache keeps the latest state and fans updates out to Discord.

```
Pi (door sensor) ──webhook──> Cache ──webhook──> Discord
                                |
                     polls Pi <-+
```

## Layout

| Directory | What it is |
|-----------|------------|
| [`pi/`](pi/) | Raspberry Pi OS base with laptop-built Noisebell deploy |
| [`remote/`](remote/) | Server-side services (cache and Discord bot) |
| [`secrets/`](secrets/) | Shared agenix-encrypted secrets and recipient rules |

Each directory has its own README with setup and configuration details.

For hosted deployment, another repo such as `../extremist-software` imports `noisebell.nixosModules.default`. That host repo provides deployment-specific values like domains, ports, and the Pi address, while the Noisebell module itself points `agenix` at the encrypted files in `secrets/` and consumes the decrypted runtime files on the target machine.