char val;
void setup() {
pinMode(13, OUTPUT);
Serial.begin(9600);
digitalWrite(13, HIGH);
}
void loop() {
if (Serial.available()) {
val = Serial.read();
Serial.println(val);
}
if (val == '1') {
digitalWrite(13, LOW);
}
else if (val == '2') {
digitalWrite(13, HIGH);
}
delay(100);