Arduino & Wearable Electronics Free Updated Sep 03, 2026

Smart Health Watch with PPG Pulse Oximeter & OLED

Build a wearable wrist monitor measuring heart rate (BPM) and blood oxygen saturation (SpO2) with MAX30102.

Project Overview

Learn photoplethysmography (PPG) optical sensing by constructing a compact wrist watch that computes real-time heart rate and blood oxygenation.

Key Features

  • MAX30102 pulse oximetry sensor with peak-detection algorithm
  • 0.96" Micro OLED showing live heartbeat waveform (photoplethysmogram)
  • Low power sleep mode with tap-to-wake interrupt
  • Custom compact 3D printed wrist casing