A complete IoT security monitoring solution using Particle Boron LTE for ultra-low-power remote monitoring with immediate local alarm response and secure webhook notifications.

🎯 Project Overview

This system provides professional-grade security monitoring for remote locations with:

2+ year battery life on a single charge
Immediate alarm activation (sub-second response)
Secure webhook notifications via SMS/email
Enterprise-grade infrastructure integration
Ultra-low-power design for remote installations

📊 System Architecture

┌─────────────────┐    ┌──────────────────┐    ┌─────────────────┐
│  Particle Boron │───▶│  Particle Cloud  │───▶│ Webhook Service │
│  + Microswitch  │    │   (Cellular)     │    │   (Traefik)     │
│  + Alarm        │    └──────────────────┘    └─────────────────┘
└─────────────────┘                                      │
                                                         ▼
                                               ┌─────────────────┐
                                               │  SMS/Email      │
                                               │  Notifications  │
                                               └─────────────────┘

🚀 Features

Hardware Features

Ultra Low Power: 2+ year battery life (5000mAh Li-Po)
Immediate Response: Local alarm activates in <1 second
Cellular Connectivity: Works anywhere with LTE coverage
Weather Resistant: IP65+ rated enclosure capability
Solar Ready: Optional solar panel for indefinite operation

Software Features

Secure Authentication: Bearer token authentication for webhooks
Rich Notifications: Battery status, signal strength, device health
Rate Limiting: DoS protection and security headers
SSL/TLS: End-to-end encryption via Let's Encrypt
Monitoring Ready: Prometheus/Grafana integration ready

Security Features

Device Authentication: Secure webhook token validation
Network Security: Traefik reverse proxy with security headers
Local Deterrent: Immediate alarm before network dependency
Tamper Detection: Device restart and power cycle monitoring

📁 Repository Structure

security-device-system/
├── README.md                 # This file
├── particle-device/          # Boron LTE device code
│   ├── README.md
│   ├── security_device.ino   # Main device firmware
│   ├── hardware/             # Wiring diagrams and schematics
│   └── docs/                 # Device-specific documentation
└── webhook-server/           # Server-side webhook service
    ├── README.md
    ├── webhook_app.py        # Flask webhook application
    ├── Dockerfile            # Container configuration
    ├── docker-compose.yml    # Service orchestration
    ├── requirements.txt      # Python dependencies
    └── docs/                 # Server deployment guides

🔧 Quick Start

Prerequisites

Hardware: Particle Boron LTE, microswitch, alarm device, battery
Infrastructure: Server with Docker, domain name, Traefik reverse proxy
Accounts: Particle.io account, Gmail account with app password

1. Hardware Setup

# See particle-device/README.md for complete hardware setup
# Basic connections:
# D2 ← Microswitch (NC configuration)
# D3 → Alarm device (with driver circuit)
# VIN ← 3.7V Li-Po battery (5000-10000mAh)

2. Server Deployment

# Clone repository
git clone https://github.com/yourusername/security-device-system.git
cd security-device-system/webhook-server

# Configure environment
cp .env.example .env
nano .env  # Add your credentials

# Deploy with Docker
docker compose up -d --build

3. Device Programming

# See particle-device/README.md for complete setup
particle flash your-device-name security_device.ino

4. Particle Webhook Configuration

# Create webhook pointing to your server
# URL: https://webhook.yourdomain.com/webhook
# Auth: Bearer your-webhook-secret
# See webhook-server/README.md for details

📊 Performance Specifications

Power Consumption

Mode	Current Draw	Duration	Daily Average
Sleep (STOP)	130μA	23h 59m	~95%
Active + Cellular	300-800mA	30-60s	~5%
Alarm Active	+50mA	10s	During events

Battery Life Estimates

5000mAh: 2-3 years normal operation
10000mAh: 4-5 years normal operation
With Solar: Indefinite (6W+ panel)

Network Usage

Data Usage: 1-5MB per month typical
Alert Latency: <30 seconds from trigger to notification
Connection Success: >95% (good cellular coverage)

🛡️ Security Model

Device Level

Physical Security: Tamper-evident enclosure
Local Response: Immediate alarm activation
Secure Boot: Particle device OS security
OTA Updates: Encrypted firmware updates

Network Level

TLS Encryption: All communications encrypted
Authentication: Bearer token webhook authentication
Rate Limiting: 10 req/min average, 20 burst
Security Headers: XSS, clickjacking, content-type protection

Infrastructure Level

Reverse Proxy: Traefik with automatic SSL
Container Security: Non-root user, minimal attack surface
Monitoring: Comprehensive logging and health checks
Backup: Easy configuration backup and restore

🔄 Maintenance

Monthly

Review battery status reports
Check cellular signal strength trends
Verify webhook delivery success rate
Test alarm functionality

Quarterly

Physical device inspection
Update firmware if available
Test backup power systems
Review security logs

Annually

Battery replacement (if not solar)
Complete system test
Security assessment
Hardware refresh planning

📈 Monitoring & Alerts

Device Health Monitoring

Daily Reports: Battery, signal strength, uptime
Critical Alerts: Low battery, connection failures
Security Events: Breach detection, device tampering
System Status: Firmware version, boot count

Server Health Monitoring

Webhook Success Rate: >98% delivery target
Response Times: <5 second average
Error Rates: <1% target
SSL Certificate: Auto-renewal monitoring

🛠️ Troubleshooting

Common Issues

Device Won't Connect

Check cellular signal strength (-70dBm or better)
Verify SIM card activation and data plan
Confirm device is claimed to your account

High Power Consumption

Verify sleep mode operation (130μA target)
Check for software loops preventing sleep
Confirm cellular radio shutdown in sleep

Missed Notifications

Check webhook service logs
Verify Gmail app password configuration
Test SMS gateway email address

False Alarms

Check microswitch mechanical condition
Verify NC (normally closed) wiring
Consider environmental factors (wind, vibration)

Support Resources

📚 Documentation

Technical Specifications

Hardware Requirements: See particle-device/docs/hardware.md
Power Analysis: See particle-device/docs/power-analysis.md
Network Architecture: See webhook-server/docs/architecture.md
Security Analysis: See docs/security-analysis.md

Deployment Guides

Production Deployment: See webhook-server/docs/production-deployment.md
Scaling Guide: See docs/scaling-guide.md
Integration Guide: See docs/integrations.md

🤝 Contributing

Fork the repository
Create a feature branch (git checkout -b feature/amazing-feature)
Commit your changes (git commit -m 'Add amazing feature')
Push to the branch (git push origin feature/amazing-feature)
Open a Pull Request

Development Setup

# Server development
cd webhook-server
python -m venv venv
source venv/bin/activate
pip install -r requirements.txt

# Device development
# Use Particle Workbench or Web IDE

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

Particle.io - Excellent IoT platform and community
Traefik Labs - Outstanding reverse proxy solution
Let's Encrypt - Free SSL certificates for everyone
Security Community - Best practices and threat modeling

📞 Support

Issues: GitHub Issues
Discussions: GitHub Discussions
Security: security@yourdomain.com

⚠️ Disclaimer: This system is designed for property protection and deterrent purposes. It should not be relied upon as the sole security measure for critical applications. Always follow local laws and regulations regarding security devices and notifications.