77 lines
3.8 KiB
Markdown
77 lines
3.8 KiB
Markdown
# About
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This file contains description about this project.
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---
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## What?
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This project utilizes Raspberry Pi with Pi Camera to detect motion in real-time. When motion is detected, the system sends a notification to a specified topic on an ntfy.sh server. The setup involves several components, including a camera interface, Docker setup for ntfy.sh and WireGuard VPN, and a Python script for motion detection.
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---
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## Features
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- **Local Camera Feed Processing**: The entire camera feed is scanned and processed locally on the device. No third-party services are involved, ensuring privacy and security are preserved.
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- **Docker-Based Isolation**: The notification system and encrypted tunnel (via WireGuard) are containerized using Docker, providing better isolation, security, and ease of deployment.
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- **Enhanced Security with UFW Firewall**: The entire setup is secured using UFW (Uncomplicated Firewall), ensuring that only necessary services are accessible and protecting the system from unauthorized access.
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## Structure
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1. `setup.sh`: A shell script to install dependencies and set up the environment.
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2. `docker-setup.sh`: A shell script that installs Docker and its dependencies.
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3. `docker-compose.yaml`: Docker Compose configuration to run ntfy.sh and WireGuard VPN in containers.
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4. `main.py`: The Python script that captures camera frames, detects motion, and sends notifications.
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---
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### setup.sh
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- Install `python3`, `pip`, and necessary libraries.
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- Install camera libraries such as `picamera2`, `opencv`, and image processing libraries.
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- Install `requests` for HTTP notifications.
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- Set up Docker and start the `ntfy.sh` container using the [docker-setup.sh](docker-setup.sh) script.
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## docker-setup.sh
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- Remove any conflicting Docker packages.
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- Add Docker’s official apt repository and install Docker and Docker Compose.
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- Set up the `ntfy.sh` and `wg-easy` containers using the provided [docker-compose.yaml](docker-compose.yaml).
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- Ensure Docker runs without sudo (add the current user to the Docker group).
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- Test the Docker installation by running a "hello-world" container.
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> [!NOTE]
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> I have referred [official Docker documentation](https://docs.docker.com/engine/install/debian/) for this.
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## docker-compose.yaml
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- `ntfy`: The container running ntfy.sh for sending notifications.
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- Exposes port 80 and uses the `binwiederhier/ntfy` Docker image.
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- Configured with timezone IST and persistent storage for cache and config.
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- `wg-easy`: A WireGuard VPN container that allows secure access to the Raspberry Pi.
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- Exposes ports `51820/udp` and `51821/tcp`.
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- Uses environment variables for configuration and requires a password hash for login.
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> [!TIP]
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> Refer official documentation for [ntfy.sh](https://docs.ntfy.sh/install/#docker) and [Wireguard](https://github.com/wg-easy/wg-easy).
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## main.py
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- Initialize the Raspberry Pi camera using the `picamera2` library.
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- Capture and compare two consecutive frames to detect motion using OpenCV’s frame difference method.
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- If motion is detected, the script will send a notification to the configured `ntfy.sh` topic (`motion-sensing` in this case by default).
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> [!TIP]
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> You can customize the topic name in the `main.py` file by modifying the `ntfy_topic` variable. If you are using the local Docker instance for `ntfy.sh`, the script will use `localhost:80` by default. You can change that too by modifying the `rpi_ip` variable.
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## Customization
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- **Motion Detection Sensitivity**: The motion detection sensitivity can be adjusted by modifying the area threshold in the `cv2.contourArea(contour)` condition in `main.py`. Decrease the threshold to detect smaller movements or increase it to filter out smaller motion.
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- **ntfy.sh Topic**: The topic for notifications is defined in `main.py` as `ntfy_topic`. You can change this to any unique topic name you want to receive notifications under.
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---
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