SleepSync

A personalized sleep optimization solution that utilizes real-time biometric data for adaptive melatonin dosing.

• Pulls HRV, resting heart rate, and respiratory rate from Fitbit API
• Calculates melatonin dosage based on live biometric data
• Delivers dose via Arduino and ESP8266-controlled micro-pump
• Analyzes written user feedback with Google Gemini NLP to adjust algorithm for future doses

Contributors

• Charles Muehlberger - @charlespers
• Phu Duong - @phuhduong
• Jaime Nunez - @Jaimenunez10
• Tom Wang - @tom05919

HackPrinceton Spring 2025

Tech Stack

• Frontend: React Native (Expo), TypeScript, Chart.js
• Backend: Node.js, Express, Fitbit API, Google Gemini API
• Hardware: ESP8266, Arduino, DC pump