#define to 14
#define red 19
#define blue 5
#define green 18

int val1;

void setup() {
  Serial.begin(115200);
  pinMode(to, INPUT);
  pinMode(red, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(green, OUTPUT);
}

void loop() {
 val1=analogRead(to);
 int A = map(val1,0,4095,0,3);
 Serial.println(A);
 
 if(A == 1 ){
    digitalWrite(red, HIGH);
    digitalWrite(blue, LOW);
    digitalWrite(green, LOW);
      delay(50);
 }
 if(A == 2){
    digitalWrite(red, LOW);
    digitalWrite(blue, HIGH);
    digitalWrite(green, LOW);
      delay(50);
 }
 if(A == 3){
   digitalWrite(red, LOW);
   digitalWrite(blue, LOW);
   digitalWrite(green, HIGH);
    delay(50);
 }
 else{
   digitalWrite(red, LOW);
   digitalWrite(blue, LOW);
   digitalWrite(green, LOW);
 }
 
}