Get heat-risk alerts and water break reminders based on local conditions
Beginner10h1–2
React NativeWeather APIPush notifications
17/20Phone Fall Detection
Detects a likely fall and alerts family if there’s no response.
Advanced48h2–4 people17/20 fit
Build Phone Fall Detection for elderly people living alone in ~48h with 2–4 people. Stack: React Native + Motion sensors + SMS API.
Why it wins: Physical demo with life-safety stakes.
Build flow
01 · Problem
A fall when living alone can go unnoticed for hours.
02 · Solution
Use phone motion sensors to detect fall patterns, ask “are you ok?”, and alert contacts if there’s no answer.
03 · Build
- 1Accelerometer stream
- 2Fall heuristic/classifier
- 3Countdown UI
- 4Contact alerts
04 · Demo
Drop the phone on a cushion → countdown → family phone gets an alert.
MVP checklist
- Motion monitoring
- Fall pattern detection
- Cancel countdown
- Emergency alerts
Tech stack
| Tech | Role | |
|---|---|---|
| React Native | Mobile app | Mobile |
| Motion sensors | Accelerometer data | Device |
| SMS API | Text-message alerts | API |
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