Binary Input Signal

Hi Guys,

I've been working with a QT-1080 sensor which has a binary output mode. It uses 3 pins for the first 3 binary numbers and a detect pin, that fires upon any contact, to make 8 combinations possible. I want to do a simple thing: light up LED's that correspond to each of the 8 touch channels.

I'm very new to arduino, so can somebody tell if this code makes any sense? or if I'm overloading the arduino with unnecessary commands?

Thanks in advance

int binPin1 = 12; //Inputs
int binPin2 = 11;
int binPin4 = 10;
int detPin = 13;

int ledPin1 = 9; //Outputs
int ledPin2 = 8;
int ledPin3 = 7;
int ledPin4 = 6;
int ledPin5 = 5;
int ledPin6 = 4;
int ledPin7 = 3;
int ledPin8 = 2;

int bin1 = 0;                    // variable for reading the pin status
int bin2 = 0;                    // variable for reading the pin status
int bin4 = 0;                    // variable for reading the pin status
int det = 0;                    // variable for reading the pin status

void setup() {
  pinMode(binPin1, INPUT);
  pinMode(binPin2, INPUT);
  pinMode(binPin4, INPUT);
  pinMode(detPin, INPUT);
  
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  pinMode(ledPin5, OUTPUT);
  pinMode(ledPin6, OUTPUT);
  pinMode(ledPin7, OUTPUT);
  pinMode(ledPin8, OUTPUT);
  
}

void loop(){
  bin1 = digitalRead(binPin1);  // read input value
  bin2 = digitalRead(binPin2);  // read input value
  bin4 = digitalRead(binPin4);  // read input value
  det = digitalRead(detPin);  // read input value
  
 if (det == HIGH) { 
   if (bin4 == HIGH) {
     if (bin2 == HIGH) {
       if (bin1 == HIGH) {
         digitalWrite (ledPin8, HIGH);
       } else { //bin1 == LOW
         digitalWrite (ledPin7, HIGH);
       }       
     } else { //bin2 == LOW
       if (bin1 == HIGH) {
         digitalWrite (ledPin6, HIGH);
       } else { //bin1 == LOW
         digitalWrite (ledPin5, HIGH);
       }   
     }
   } else { //bin4 == LOW
     if (bin2 == HIGH) {
       if (bin1 == HIGH) {
         digitalWrite (ledPin4, HIGH);
       } else { //bin1 == LOW
         digitalWrite (ledPin3, HIGH);
       }       
     } else { //bin2 == LOW
       if (bin1 == HIGH) {
         digitalWrite (ledPin2, HIGH);
       } else { //bin1 == LOW
         digitalWrite (ledPin1, HIGH);
       }   
     }
   } 
     
 } else {
   digitalWrite(ledPin1, LOW);
   digitalWrite(ledPin2, LOW);
   digitalWrite(ledPin3, LOW);
   digitalWrite(ledPin4, LOW);
   digitalWrite(ledPin5, LOW);
   digitalWrite(ledPin6, LOW);
   digitalWrite(ledPin7, LOW);
   digitalWrite(ledPin8, LOW);   
 }
                
}