// Using 12 sensors 
int N_sensor = 12; // number of sensors
int sensor[12];  //array for storing the sensor values
int threshold = 500; 

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

void loop() {
sensor_reading();
 }

void sensor_reading() {
  for (int i = 0; i < N_sensor ; i++) {
    sensor[i] = analogRead(i);
    Serial.print(String(sensor[i]) + "  "); 
  }
  Serial.println(); 
}