// Define the analog input pin for the pager signal
#define Pager_IN A0

// Define the output pins for the RGB LED strip
#define RED_OUT 7
#define BLUE_OUT 6
#define GREEN_OUT 5

// Time to wait before activating the LED strip after pager activation (in milliseconds)
#define Activate_wait 120000

// Time to keep the LED strip in white color before returning to normal (in milliseconds)
#define Light_wait 120000

// Voltage threshold to detect pager activation (approximately 1.5V [1024 = 5V])
#define Pager_activation 204

// Setup function, runs once when the Arduino starts
void setup() {
  // Set the RGB LED strip pins as outputs
  pinMode(RED_OUT, OUTPUT);
  pinMode(BLUE_OUT, OUTPUT);
  pinMode(GREEN_OUT, OUTPUT);

  // Set the pager input pin as an input
  pinMode(Pager_IN, INPUT);

  // Turn off all the LEDs in the RGB strip (HIGH means OFF in this setup)
  digitalWrite(RED_OUT, HIGH);
  digitalWrite(BLUE_OUT, HIGH);
  digitalWrite(GREEN_OUT, HIGH);

  // Start communication with the serial monitor at 9600 baud rate for debugging
  Serial.begin(9600);
}

// Loop function, runs repeatedly after setup()
void loop() {
  // Read the voltage value from the pager input pin
  int PagerV = analogRead(Pager_IN);

  // Print the voltage value read from the pager
  Serial.print("Voltage from pager: ");
  Serial.print(PagerV);
  Serial.println("mV");

  // Check if the pager voltage is above the activation threshold
  if (PagerV >= Pager_activation) {
    Serial.println("Pager activation detected.");

    // Wait for the specified time before activating the LED strip
    Serial.print("Waiting for ");
    Serial.print(Activate_wait);
    Serial.println("ms");
    delay(Activate_wait);

    // Change the LED strip color to RED
    Serial.println("Changing Strip color to RED");
    digitalWrite(RED_OUT, HIGH);
    digitalWrite(BLUE_OUT, LOW);
    digitalWrite(GREEN_OUT, LOW);

    // Wait for the specified time while keeping the RED color
    Serial.print("Waiting for ");
    Serial.print(Light_wait);
    Serial.println("ms");
    delay(Light_wait);

    // Change the LED strip color back to WHITE (all LEDs OFF)
    Serial.println("Changing Strip color to WHITE");
    digitalWrite(RED_OUT, HIGH);
    digitalWrite(BLUE_OUT, HIGH);
    digitalWrite(GREEN_OUT, HIGH);
  }

  // A small delay to avoid excessive loop iterations
  delay(50);
}