AlertAngel is an elderly-care monitoring system that provides real-time health tracking, fall detection, and instant alerts for caregivers.

AlertAngel devices are inspired by the GitHub Universe ID Cards i.e AlertAngel devices are also ID cards with a screen.

• Continuous monitoring of heart rate, SpO₂, temperature, and motion
• Fall detection with immediate alerts
• Simple on-device display for vitals and warnings
• Medicine reminders and cognitive test buttons
• Notifications through Telegram and a mobile app
• Health data logging for future review
• System alerts like low battery and phone disconnected

The ESP32 collects sensor data, checks for irregularities, updates the display, and sends instant notifications to caregivers.

AlertAngel offers an affordable, easy-to-use solution for families and caregivers needing reliable, continuous elderly monitoring.

👉 For full technical details, visit:
https://github.com/AlertAngel/tech_stack

graph TD
    Start([System Start]) --> Init[Initialize ESP32 and Sensors]
    Init --> Collect[Data Collection Loop]
    
    Collect --> Sensors{Read Sensors}
    Sensors --> HR[Heart Rate and SpO2]
    Sensors --> Temp[Body Temperature]
    Sensors --> Motion[Motion Detection]
    
    HR --> Check{Check Values}
    Temp --> Check
    Motion --> Check
    
    Check -->|Normal| Normal[Normal Status]
    Check -->|Alert| Critical[Critical Alert]
    
    Critical --> Buzzer[Sound Alarm]
    Critical --> Notify[Send Notification]
    
    Notify --> App[Mobile App]
    Notify --> Message[Telegram Message]
    
    Normal --> Log[Save Data]
    App --> Log
    Message --> Log
    
    Log --> Wait[Wait]
    Wait --> Collect