#define numberOfSensors 3
int muxPins[] = {5,6,7};
int dataPin = A0;
int lastDataValues[] = {0,0,0};
int i = 0;

String delLast(String input) {
  return input.substring(0,input.length()-1);
}

void setup() {
  for(i = 0; i < sizeof(muxPins); i++) {
    pinMode(muxPins[i],OUTPUT);
    digitalWrite(muxPins[i],LOW);
  }
  pinMode(dataPin, INPUT);
  Serial.begin(115200);
}

void loop() {
  digitalWrite(5,LOW);digitalWrite(6,LOW);digitalWrite(7,HIGH);
  String finalShort = "";
  String finalReal = "";
  String raw = "";
  int mapValue = 0;
  
  for(int i = 0; i < numberOfSensors; i++) {
    String bin = String(i,BIN);
    while(bin.length() < 3) {
      bin = "0" + bin;
    }
    
    for(int j = 0; j < 3; j++) {
      digitalWrite(muxPins[j],bin.substring(bin.length()-j-1,bin.length()-j).toInt());
    }
    
    mapValue = map(analogRead(dataPin), 530, 810, 0, 180);
    finalShort = finalShort +  String(mapValue - lastDataValues[i]) + ",";
    finalReal = finalReal + String(mapValue) + ",";
    raw = raw + String(analogRead(dataPin)) + ",";
    lastDataValues[i] = mapValue;
  }
  
  Serial.println(delLast(raw) + " :: " + delLast(finalReal) + " :: " + delLast(finalShort));
  delay(100);
}