Vaishnav Sabari Girish

Vaishnav Sabari Girish

@vaishnavs

AlertAngel: A device to make monitoring Elderly Patients a breeze

Submitted Feb 21, 2026

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

Tech Stack

  1. Embedded Rust (For the firmware)
  2. Flutter (For mobile application)
  3. Rust (for the website)

Form Factor

AlertAngel devices are inspired by the GitHub Universe ID Cards i.e AlertAngel devices are also ID cards with a screen. The screen uses the ratatui library with the mousefood backend

What it Does

  • 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

How it works

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

Why it matters

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

Website

The AlertAngel website is built using Rust (ratzilla) which allows you to build ratatui websites. The website allows you to get a feel for the game before buying the device. A demo of sorts.

https://alertangel.github.io

Credits

  1. Orhun Parmaksiz (Core Maintainer of ratatui and creator of ratzilla)
  2. Jagoda Estera Ślązak (Creator or mousefood)

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