How to Measure Heart Rate and SpO2 With MAX30102 and Arduino

Measuring Heart Rate & SpO2 with MAX30102 using Arduino

Measuring heart rate and SpO2 using a MAX30102 with an Arduino is a great way to obtain various health analytics. The interface allows you to accurately measure the pulse rate and oxygen saturation of the body. By combining this data with environmental statistics, you can monitor health in real-time, or over time to track changes in health. This tutorial will explain how to use the MAX30102 and Arduino to measure heart rate and SpO2.

What is MAX30102?

MAX30102 is a pulse oximetry and heart-rate monitor biosensor module. It is designed to be used both in medical and fitness applications, and it operates on 3V-5V DC. The module uses two light sources that detect reflections from the human body. These signals are then processed and the data can be accessed through an I2C interface.

What is Pulse Oximetry?

Pulse oximetry is a non-invasive technique used to measure the oxygen saturation of a person’s blood. It works by passing light through the skin, which is reflected off the oxygenated hemoglobin molecules found in the bloodstream. The amount of light detected provides useful information about the oxygen level in the blood.

How to Measure Heart Rate & SpO2 with MAX30102

The MAX30102 module is designed to work with an Arduino microcontroller. Once connected to the Arduino, the module can be used to read the heart rate and SpO2 level of the body. Here are the steps to setting up the MAX30102 with an Arduino:

• Connect the MAX30102 module to the Arduino board by wiring the pins correctly.
• Program the Arduino to read the data from the module and store the data in memory.
• Upload the code and run the program.
• Calibrate the MAX30102 before taking measurements, to ensure accurate readings.
• Measure the heart rate and SpO2 with the MAX30102.

By following these steps, you will be able to measure heart rate and SpO2 with MAX30102 using your Arduino.

Here is a sample Arduino code for using DHT11 temperature and humidity sensor with Arduino:

#include <dht.h> // Include the dht library

dht DHT; // Create a DHT object

#define DHT11_PIN 7 // Set the pin number to which the DHT11 sensor is connected

void setup() {
  Serial.begin(9600); // Set the baud rate for serial communication
}

void loop() {
  int chk = DHT.read11(DHT11_PIN); // Read the sensor data and check for errors

  Serial.print("Temperature = "); 
  Serial.print(DHT.temperature); // Print the temperature value
  Serial.print(" *C ");
  Serial.print("Humidity = ");
  Serial.print(DHT.humidity); // Print the humidity value
  Serial.println(" %");

  delay(2000); // Wait for 2 seconds before taking another reading
}

Conclusion

This code uses the DHT library to read the temperature and humidity values from the DHT11 sensor. The DHT11 sensor is connected to pin 7 of the Arduino.

In the setup() function, the code sets the baud rate for serial communication to 9600.

In the loop() function, the code reads the sensor data using the DHT.read11() function and stores the values in the DHT.temperature and DHT.humidity variables.

The code then uses the Serial.print() function to print the temperature and humidity values to the serial monitor. The delay() function is used to wait for 2 seconds before taking another reading.

Note that the DHT11 sensor is a relatively slow sensor, and the DHT.read11() function may take up to 1 second to execute. Therefore, it is recommended to add a delay of at least 2 seconds between readings to avoid reading errors.

Measuring heart rate and SpO2 with MAX30102 and Arduino is a simple and effective way to obtain health analytics that can be used to monitor and track changes in health. With this data, you can take the necessary steps to maintain or improve your health.