by nupity
int led = 3; // Pin 3
void setup()
{
pinMode(led, OUTPUT); // Set pin 13 as digital out
// Start up serial connection
Serial.begin(9600); // baud rate
Serial.flush();
}
void loop()
{
String input = "";
// Read any serial input
while (Serial.available() > 0)
{
input += (char) Serial.read(); // Read in one char at a time
delay(5); // Delay for 5 ms so the next char has time to be received
}
if (input == "1") //if the arduino got "1" from the serial communication
{
digitalWrite(led, HIGH); // on
}
else if (input == "0") //if the arduino got "0" from the serial communication
{
digitalWrite(led, LOW); // off
}
}