Portable Health monitor

portable-health-monitor.ino

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <MAX30100_PulseOximeter.h>
#include <Adafruit_MLX90614.h>

#define ECG_PIN A0

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define SCREEN_ADDRESS 0x3C

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

PulseOximeter pox;

Adafruit_MLX90614 mlx = Adafruit_MLX90614();

void setup() {
  Serial.begin(115200);

  if(!display.begin(SSD1306_I2C_ADDRESS, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }

  display.display();
  delay(2000);
  display.clearDisplay();
  
  Serial.println("MLX90614 test");
  mlx.begin();

  pox.begin();
  pox.setIRLedCurrent(MAX30100_LED_CURR_7_6MA);
}

void loop() {
  float temperature = mlx.readObjectTempC();
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  int heartRate = pox.getHeartRate();
  Serial.print("Heart rate: ");
  Serial.print(heartRate);
  Serial.println(" bpm");

  int oxygen = pox.getSpO2();
  Serial.print("Blood oxygen: ");
  Serial.print(oxygen);
  Serial.println(" %");

  // Read ECG value
  int ecgValue = analogRead(ECG_PIN);
  Serial.print("ECG Value: ");
  Serial.println(ecgValue);

  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print("Temp: ");
  display.print(temperature);
  display.println(" C");
  display.print("HR: ");
  display.print(heartRate);
  display.println(" bpm");
  display.print("SpO2: ");
  display.print(oxygen);
  display.println(" %");
  display.print("ECG: ");
  display.println(ecgValue);
  display.display();

  delay(1000);
}