ESP32 Heart Rate Sensor Project

This project demonstrates how to integrate a heart rate sensor with an ESP32 microcontroller to measure heart rate in beats per minute (bpm). Heart rate sensors are essential for health monitoring applications, providing real-time heart rate data for fitness trackers, health monitors, and medical devices.

Components Needed

• ESP32 Microcontroller
• Heart Rate Sensor Module (Analog Output)
• Jumper Wires
• Breadboard

Circuit Setup

1.Connecting the Heart Rate Sensor to ESP32:

Connect the analog output of the heart rate sensor module to analog pin 36 on the ESP32.

Ensure the power and ground connections of the heart rate sensor module are properly connected.

Instructions

1.setup

Initialize serial communication at 9600 baud rate in the setup() function using Serial.begin().

Configure analog pin 36 as an input using pinMode().

2.operation

In the loop() function:

• Read the analog sensor value using analogRead().
• Map the sensor value to heart rate in beats per minute (bpm) using the map() function based on the sensor's output range and calibration.
• Print the calculated heart rate to the Serial Monitor.

3.Considerations

Sensor Calibration: Adjust the map() function parameters according to the heart rate sensor's output characteristics.

Signal Stability: Ensure stable sensor readings by minimizing electrical noise and ensuring proper sensor placement.

Applications

Fitness Monitoring: Track heart rate during exercise or physical activity.

Health Monitoring: Monitor heart rate for medical purposes or patient monitoring.

Biofeedback Systems: Integrate with biofeedback systems for real-time physiological data analysis.

Notes

Data Interpretation: Heart rate sensors provide analog signals proportional to the user's heart rate, requiring mapping to obtain meaningful bpm values.

Serial Output: Monitor and analyze heart rate data through the ESP32's Serial Monitor for debugging and analysis purposes.