Ghost Detector (Project 6)

#define NUMREADINGS 25 // Raise number to increase data smoothing 
int senseLimit = 1023; // Raise number to decrease sensitivity of                         // the antenna (up to 1023 max) 
int probePin = 5; // Set analog pin 5 as the antenna pin 
int val = 0;      // Reading from probePin
// Pin connections to LED bar graph with resistors in series 
int LED1 = 11;    
int LED2 = 10; 
int LED3 = 9; 
int LED4 = 8;    
int LED5 = 7;    
int LED6 = 6;    
int LED7 = 5;    
int LED8 = 4;    
int LED9 = 3;    
int LED10 = 2; 
int readings[NUMREADINGS]; // Readings from the analog input 
int index = 0;             // Index of the current reading 
int total = 0;             // Running total 
int average = 0;           // Final average of the probe reading

void setup() {  
  pinMode(2, OUTPUT); // Set LED bar graph pins as outputs  
  pinMode(3, OUTPUT);  
  pinMode(4, OUTPUT);  
  pinMode(5, OUTPUT);  
  pinMode(6, OUTPUT);  
  pinMode(7, OUTPUT);  
  pinMode(8, OUTPUT);  
  pinMode(9, OUTPUT);  
  pinMode(10, OUTPUT);  
  pinMode(11, OUTPUT);

       for (int i = 0; i < NUMREADINGS; i++)    
       readings[i] = 0; // Initialize all readings to 0 
}

void loop() {  
  val = analogRead(probePin); // Take a reading from probe  
  if (val >= 1) {             // If the reading isn't zero, proceed    
    val = constrain(val, 1, senseLimit); // If the reading is higher than the current senseLimit value, update senseLimit value with higher reading    
    val = map(val, 1, senseLimit, 1, 1023); // Remap the constrained 
                                             // value within a 1 to 1023 range    
    total -= readings[index]; // Subtract the last reading    
    readings[index] = val;    // Read from the sensor    
    total += readings[index]; // Add the reading to the total    
    index = (index + 1);      // Advance to the next index    
    if (index >= NUMREADINGS) // If we're at the end of the array      
    index = 0;              // loop around to the beginning    
    average = total / NUMREADINGS; // Calculate the average reading 
     if (average > 50) { // If the average reading is higher than 50      
      digitalWrite(LED1, HIGH); // turn on the first LED    
      }    
      else {                        // If it's not      
        digitalWrite(LED1, LOW);    // turn off that LED   
        }    
        if (average > 150) {          // And so on      
          digitalWrite(LED2, HIGH);   
          }    
          else {     
            digitalWrite(LED2, LOW);    
            }    
            if (average > 250) {      
              digitalWrite(LED3, HIGH);    
              }    
              else {      
                digitalWrite(LED3, LOW);    
                }    
                if (average > 350) {      
                  digitalWrite(LED4, HIGH);    
                  }    
                  else {      
                    digitalWrite(LED4, LOW);    
                    }    
                    if (average > 450) 
                    {      
                      digitalWrite(LED5, HIGH);    
                      }    
                      else {      
                        digitalWrite(LED5, LOW);    
                        }
                        if (average > 550) {      
                          digitalWrite(LED6, HIGH);    
                          }    
                          else {      
                            digitalWrite(LED6, LOW);    
                            }    
                            if (average > 650) {      
                              digitalWrite(LED7, HIGH);    
                              }    
                              else {      
                                digitalWrite(LED7, LOW);    
                                }    
                                if (average > 750) {      
                                  digitalWrite(LED8, HIGH);    
                                  }    
                                  else {      
                                    digitalWrite(LED8, LOW);    
                                    }    
                                    if (average > 850) {      
                                      digitalWrite(LED9, HIGH);    
                                      }    
                                      else {      
                                        digitalWrite(LED9, LOW);    
                                        }    
                                        if (average > 950) {      
                                          digitalWrite(LED10, HIGH);    
                                          }    
                                          else {      
                                            digitalWrite(LED10, LOW);    
                                            }    Serial.println(val);   // Use output to aid in calibrating  
                                            } 
      }