Nostalgia

A digital companion for a vintage vinyl setup. Captures audio from a USB interface on a Raspberry Pi, visualizes it on a tablet (VU Meter), and streams it to Google Cast devices in the house.

System Architecture

• Hardware: Raspberry Pi 4 (Server), Nexus 7 Tablet (Client), Sonos USB-C Line-in Adapter (ADC).
• Backend: Python (FastAPI, WebSockets, FFmpeg).
• Frontend: React (Vite, Tailwind CSS).
• Deployment: Nginx + Systemd on Raspberry Pi.

Features

• Real-time VU Meter: Visualizes audio levels on the tablet with low latency.
• Multi-Room Streaming: Broadcasts vinyl audio to Google Cast groups.
• Playback Control: Start/Stop casting and adjust volume from the tablet.
• Local Monitoring: Listen to the stream directly in the browser.

Getting Started

Prerequisites

• Node.js & npm
• Python 3.11+
• Raspberry Pi with nostalgia hostname configured (or update deploy.sh).

Installation (Local Dev)

1. Frontend:

   cd frontend
   npm install
   npm run dev

2. Backend:

   cd backend
   pip install -r requirements.txt
   uvicorn main:app --reload

Deployment

Use the included script to deploy to the Raspberry Pi:

./deploy.sh                  # Deploy both Frontend and Backend
./deploy.sh --frontend-only  # Deploy only Frontend
./deploy.sh --backend-only   # Deploy only Backend

Configuration

• Nginx: See backend/nostalgia.nginx.
• Systemd: See backend/nostalgia.service.
• Audio Device: Configured in backend/broadcaster.py and backend/vu_meter.py (Default: plug:dsnoop:1).

License

MIT