arduino_control

char val;
void setup() {
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  Serial.begin(9600);
}

void loop() {
if( Serial.available() >0 ) {
    val = Serial.read();
    Serial.println(val);
}
       if( val == '1' ) {
    digitalWrite(2,HIGH); }
  else if( val == '2' ) {
    digitalWrite(3,HIGH); }

  else if( val == 'A' ) {
    digitalWrite(2,LOW); }
  else if( val == 'B' ) {
    digitalWrite(3,LOW); }
}