// Pin Definitions
int sensorPin = A0;    // Potentiometer connected to A0 (simulating hydration sensor)
int ledPin = 13;       // LED connected to pin 13

// Variables
int sensorValue = 0;
int hydrationLevel = 888;
int hydrationThreshold = 30;  // Hydration alert threshold

void setup() {
  Serial.begin(9600);           // Initialize serial communication
  pinMode(ledPin, OUTPUT);       // Set LED pin as output
}

void loop() {
  // Read the potentiometer value
  sensorValue = analogRead(sensorPin);

  // Map the sensor value (0-1023) to a percentage (0-100%)
  hydrationLevel = map(sensorValue, 0, 1023, 0, 100);

  // Print the hydration level to the Serial Monitor
  Serial.print("Hydration Level: ");
  Serial.print(hydrationLevel);
  Serial.println("%");

  // Check if hydration is below the threshold
  if (hydrationLevel < hydrationThreshold) {
    digitalWrite(ledPin, HIGH);  // Turn on LED
    Serial.println("Warning: Hydration is low!");
  } else {
    digitalWrite(ledPin, LOW);   // Turn off LED
  }

  delay(1000);  // Delay for 1 second before the next reading
}