# 📅 Turmli Calendar - Raspberry Pi Deployment Guide

This guide provides instructions for deploying the Turmli Bar Calendar Tool on a Raspberry Pi Zero (or other Raspberry Pi models) as a lightweight systemd service without Docker.

## 🎯 Why No Docker?

On resource-constrained devices like the Raspberry Pi Zero (512MB RAM, single-core CPU), Docker adds unnecessary overhead:
- Docker daemon uses ~50-100MB RAM
- Container layer adds ~20-30MB overhead
- Additional CPU usage for containerization
- Slower startup times

Running directly as a systemd service provides:
- ✅ Minimal resource usage
- ✅ Faster startup
- ✅ Direct hardware access
- ✅ Simple management
- ✅ Native systemd integration

## 📋 Prerequisites

### Hardware Requirements
- **Raspberry Pi Zero/Zero W** (minimum) or any Raspberry Pi model
- **SD Card**: 8GB minimum (Class 10 or better recommended)
- **Network**: Ethernet adapter or WiFi
- **Power**: Stable 5V power supply

### Software Requirements
- **OS**: Raspberry Pi OS Lite (32-bit recommended)
- **Python**: 3.9 or newer
- **Memory**: ~100-150MB free RAM
- **Storage**: ~200MB free space

## 🚀 Quick Installation

```bash
# 1. Copy the deployment script to your Pi
scp deploy_rpi.sh pi@raspberrypi:/home/pi/

# 2. SSH into your Pi
ssh pi@raspberrypi

# 3. Clone or copy the application
git clone <repository-url> turmli-calendar
cd turmli-calendar

# 4. Run the deployment script
sudo ./deploy_rpi.sh install
```

The application will be available at `http://<pi-ip-address>:8000`