Heart Rate (Pulse) Sensor

EGP150.00

Description
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Product Overview
The Heart Rate (Pulse) Sensor is a non-invasive optical sensor designed to measure real-time heart rate through photoplethysmography (PPG). Ideal for wearable health devices, fitness trackers, and medical prototyping, this sensor detects blood flow changes using infrared light, providing accurate pulse data. Compatible with Arduino, Raspberry Pi, and other microcontrollers, it’s perfect for hobbyists, researchers, and developers focused on health tech innovation.

Key Features

Optical PPG Technology: Infrared LED and photodetector for precise pulse detection.
Plug-and-Play Integration: Works with 3.3V/5V systems and common platforms (Arduino, ESP32).
Real-Time Output: Analog/Digital signals for immediate heart rate monitoring.
Low Power Consumption: 4mA operating current for battery-powered applications.
Compact Design: Lightweight (15g) and small footprint (20x15mm) for wearables.
No Soldering Required: Pre-soldered pins for quick prototyping.
Compliance: CE and RoHS certified for safety.

Technical Specifications

Measurement Range: 30–250 BPM
Accuracy: ±2 BPM (resting conditions)
Response Time: <5 seconds
Operating Voltage: 3.3V–5V DC
Output Signal: Analog (0–3.3V) / Digital (TTL)
LED Wavelength: 940nm (infrared)
Sampling Rate: 100 Hz
Interface: I2C, UART (configurable)
Dimensions: 20mm x 15mm x 5mm
Operating Temperature: 0°C to 50°C

Benefits

User-Friendly: Simple wiring and open-source libraries (e.g., Arduino PulseSensor).
Versatile: Suitable for wearables, lab research, or IoT health monitors.
Cost-Effective: Affordable alternative to clinical-grade sensors.
Educational: Ideal for STEM projects on biomedical engineering.
Durable: Anti-motion artifact design for stable readings during activity.

Usage Instructions

Wiring: Connect VCC (3.3V/5V), GND, and signal pin to microcontroller.
Placement: Attach sensor to fingertip or earlobe for optimal blood flow detection.
Software Setup: Install PulseSensor or similar library; upload sample code.
Calibration: Rest for 30 seconds to stabilize initial readings.
Monitoring: View real-time BPM via serial monitor or LCD display.
Troubleshooting: Ensure minimal ambient light interference for accuracy.

Safety & Storage

Handling: Avoid bending sensor pins; use gentle pressure on skin contact points.
Storage: Keep in anti-static bag, away from moisture and direct sunlight.
Operational Limits: Do not submerge in water or expose to extreme temperatures.
Medical Disclaimer: Not for diagnostic use; intended for prototyping/education.

Applications

Fitness trackers and smartwatches
Patient vital sign monitoring (hospitals, home care)
Sports science performance analysis
Stress management devices (biofeedback)
Biomedical engineering labs and STEM education
IoT health platforms and telemedicine

Why Choose This Heart Rate Sensor?
Combining accuracy, ease of use, and affordability, this sensor bridges the gap between hobbyist projects and professional health tech development. Its robust design, low power needs, and seamless compatibility with open-source platforms make it a top choice for innovators exploring real-time biometric monitoring. Whether building a fitness gadget or a research tool, this sensor delivers reliable pulse data to bring your ideas to life.

Example Code to Read Heart Rate Sensor Data

Below, you will find an example of how to use a heart rate (pulse) sensor with an Arduino microcontroller. We’ll assume the use of a common pulse sensor, such as the Pulse Sensor Amped, which interfaces via analog output.

Required Components:

1 x Arduino board (e.g., Arduino Uno)
1 x Heart Rate (Pulse) Sensor (e.g., Pulse Sensor Amped)
Jumper wires
Breadboard (optional)

Connection Diagram:

Sensor VCC: Connect to 5V on Arduino
Sensor GND: Connect to GND on Arduino
Sensor Output (SIG): Connect to an analog pin on the Arduino (e.g., A0)

Arduino Code

Here is a simple example code to read the pulse sensor data and display the heart rate on the serial monitor:

// Define the analog input pin for the pulse sensor
const int pulsePin = A0; 

// Variables to hold sensor readings
int pulseValue;
int threshold = 512; // Threshold value for detecting heartbeat
int heartRate; 
int lastBeatTime = 0; // Last time the sensor detected a beat
int beatCount = 0; // Count of beats detected

void setup() {
    Serial.begin(9600);  // Start serial communication
    pinMode(pulsePin, INPUT);  // Set the pulse pin as input
}

void loop() {
    pulseValue = analogRead(pulsePin); // Read the pulse sensor value

    // Check if pulseValue exceeds the threshold (indicating a heartbeat)
    if (pulseValue > threshold) {
        // Only count the beat if enough time has elapsed since the last detected beat
        if (millis() - lastBeatTime > 1000) { // 1 second debounce
            heartRate = beatCount; // Save the current heart rate
            beatCount = 0; // Reset the beat count for the next interval
            lastBeatTime = millis(); // Update the last beat time
        }
        beatCount++; // Increment beat count
    }

    // Output the current heart rate to the serial monitor
    if (millis() - lastBeatTime >= 1000) { // Update the heart rate every second
        Serial.print("Heart Rate: ");
        Serial.print(heartRate);
        Serial.println(" BPM");
    }

    delay(10); // Short delay for stability
}

Explanation of the Code:

Pulse Pin Configuration: The pulse sensor is connected to one of the analog pins (A0) on the Arduino.
Loop Operation: In the loop(), the code continuously reads the value from the pulse sensor.
Heartbeat Detection: When the sensor value exceeds a defined threshold (indicating a heartbeat), the code checks whether enough time has passed since the last detected beat to avoid counting noise.
Heart Rate Calculation: The heart rate is calculated every second, based on the count of detected beats in that period.
Serial Output: The heart rate in BPM is printed to the serial monitor for monitoring.

Conclusion

This example provides a basic foundation for utilizing a heart rate (pulse) sensor with an Arduino. The code can be tailored for various applications, including fitness tracking, health monitoring, or integration into wearable technology. For best results, make sure to calibrate the threshold and test the sensor under real conditions. Always refer to specific sensor documentation for precise wiring and usage guidelines.

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Heart Rate (Pulse) Sensor