Smart Guardian System Setup

This guide provides step-by-step instructions to set up the Smart Guardian system, which involves capturing images using a Raspberry Pi, reading sensor data using an Arduino, and logging the data to an InfluxDB database.

Table of Contents

1. Raspberry Pi Setup
2. InfluxDB Configuration
3. Building and Running the Docker Container
4. Arduino Setup
5. Hardware Setup
6. Setting a Fixed IP Address for Raspberry Pi

Raspberry Pi Setup

1. Create a directory for InfluxDB data:

   mkdir -p /home/pi/influxdb/data

2. Generate the InfluxDB configuration file:

   docker run --rm influxdb:2.0 influxd print-config > /home/pi/influxdb/config.yml

3. Create a docker-compose.yml file:

   version: '3.1'
   
   services:
     influxdb:
       image: influxdb:2.0
       container_name: influxdb
       ports:
         - "8086:8086"
       volumes:
         - /home/pi/influxdb/data:/var/lib/influxdb2
         - /home/pi/influxdb/config.yml:/etc/influxdb2/influxdb2.conf

4. Start the InfluxDB container:

   docker compose up -d influxdb

InfluxDB Configuration

1. Access the InfluxDB web interface:

   • Open a browser and navigate to: http://<rpi-url>:8086

2. Set up InfluxDB:

   • Follow the on-screen instructions to set up the InfluxDB instance, create an initial user, and set up the database.

Building and Running the Docker Container (Smart Guardian)

1. Create a requirements.txt file:

   picamera2
   influxdb
   requests
   openai
   langchain

2. Create a Dockerfile:

   # Use the balenalib base image for Raspberry Pi 4 (ARM architecture)
   FROM balenalib/raspberrypi4-64-python:latest
   
   # Install system dependencies
   RUN apt-get update && apt-get install -y \
       libjpeg-dev \
       zlib1g-dev \
       libopenjp2-7 \
       libtiff5 \
       libatlas-base-dev \
       && apt-get clean \
       && rm -rf /var/lib/apt/lists/*
   
   # Set the working directory
   WORKDIR /app
   
   # Copy the requirements file
   COPY requirements.txt .
   
   # Install Python dependencies
   RUN pip install --upgrade pip
   RUN pip install -r requirements.txt
   
   # Copy the rest of the application code
   COPY . .
   
   # Set environment variables for InfluxDB
   ENV INFLUXDB_HOST=localhost
   ENV INFLUXDB_PORT=8086
   ENV INFLUXDB_USER=user
   ENV INFLUXDB_PASSWORD=password
   ENV INFLUXDB_DATABASE=sensors
   ENV INFLUXDB_MEASUREMENT=environment
   
   # Run the script
   CMD ["python", "your_script.py"]

3. Build and run the Docker container:

   docker build -t smart_guardian .
   docker run --privileged -e INFLUXDB_HOST=<your_host> -e INFLUXDB_PORT=<your_port> -e INFLUXDB_USER=<your_user> -e INFLUXDB_PASSWORD=<your_password> -e INFLUXDB_DATABASE=<your_database> -e INFLUXDB_MEASUREMENT=<your_measurement> smart_guardian

Arduino Setup

1. Install required libraries:

   • DHT sensor library: DHT library
   • Ethernet library (included with the Arduino IDE)
   • HTTP client library: ArduinoHttpClient

2. Upload the Arduino script

Hardware Setup

1. Connect the sensors to the Arduino:

   • DHT11 Sensor:
     • VCC to 5V
     • GND to GND
     • Data pin to digital pin 2
   • Moisture Sensor:
     • VCC to 5V
     • GND to GND
     • Analog output to analog pin A0

2. Connect the Arduino to the Ethernet shield/module.

3. Ensure the Raspberry Pi and Arduino are on the same network.

Setting a Fixed IP Address for Raspberry Pi

1. Edit the dhcpcd.conf file:

   sudo nano /etc/dhcpcd.conf

2. Add the following lines at the end of the file:

   interface eth0
   static ip_address=192.168.1.100/24
   static routers=192.168.1.1
   static domain_name_servers=192.168.1.1

   Replace 192.168.1.100 with the desired IP address for your Raspberry Pi and 192.168.1.1 with your router’s IP address.

3. Restart the DHCP service:

   sudo systemctl restart dhcpcd

4. Reboot the Raspberry Pi:

   sudo reboot

After following these steps, your Smart Guardian system should be set up and running, with sensor data being captured and stored in InfluxDB, ready for further analysis or monitoring.