This project builds a real-time heart rate monitor that displays pulse data on an ESP32 microcontroller. Using a pulse sensor and a small display, the device reads optical heart rate signals and shows live BPM (beats per minute) readings with visual feedback.
The guide includes a complete parts list, wiring diagram showing sensor connections to the ESP32, and step-by-step assembly instructions. Firmware code handles sensor data acquisition, heart rate calculation, and display output, making it suitable for fitness tracking, health monitoring, or learning about biometric sensors.
Wiring diagram
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