/*
Send data from multiple switches through a pair of wires without using a digital protocol
only a program resistor is needed for each switch and an analog voltage from the resistor
is detected and latched
*/
int commandState;
void setup() {
  Serial.begin(9600);
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
    
  //digitalWrite(11, HIGH);
}

void loop() {
  commandState = analogRead(A0);
  Serial.println(commandState);

  if(commandState == 0 && commandState <20){
    digitalWrite(11, HIGH);
    digitalWrite(10, LOW);
    digitalWrite(9, LOW);
    digitalWrite(8, LOW);
  }
  else if(commandState > 683 && commandState < 723) {
    digitalWrite(11, LOW);
    digitalWrite(10, HIGH);
    digitalWrite(9, LOW);
    digitalWrite(8, LOW);
  }
  else if(commandState > 94 && commandState < 134) {
    digitalWrite(11, LOW);
    digitalWrite(10, LOW);
    digitalWrite(9, HIGH);
    digitalWrite(8, LOW);
  }
  else if(commandState > 394 && commandState < 434) {
    digitalWrite(11, LOW);
    digitalWrite(10, LOW);
    digitalWrite(9, LOW);
    digitalWrite(8, HIGH);
  }  
   delay(50);
}