#include <Wire.h>
#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

const int buzzerPin = 3;
const int heartRatePotPin = A0;
const int spo2PotPin = A1;

void setup()
{
  Serial.begin(9600);

  // Initialize DHT sensor
  dht.begin();

  // Set up buzzer pin
  pinMode(buzzerPin, OUTPUT);
}

void loop()
{
  // Read values from the heart rate and SpO2 potentiometers
  int heartRatePotValue = analogRead(heartRatePotPin);
  int spo2PotValue = analogRead(spo2PotPin);

  // Map potentiometer values to heart rate and SpO2 ranges
  float heartRate = map(heartRatePotValue, 0, 1023, 60, 180); // Maps potentiometer value to heart rate range (60-180 BPM)
  float spO2 = map(spo2PotValue, 0, 1023, 90, 100);            // Maps potentiometer value to SpO2 range (90-100%)

  // Read temperature from DHT sensor
  float temperature = dht.readTemperature();

  // Check conditions and trigger buzzer if necessary
  if (heartRate > 80 || spO2 < 96 || temperature > 37.5)
 
  {
    digitalWrite(buzzerPin, HIGH); // Turn the buzzer on
   Serial.println("buzzerPin=HIGH");
   }
  else
  {
    digitalWrite(buzzerPin, LOW); // Turn the buzzer off
Serial.println("buzzer = low"); }
  

  // Add a delay to avoid rapid updates
delay(1000);
}