9-5

Arduino code from 9/5:

#define ledPin 13

long lastTimeVar = 0;
byte ledState = 0;

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}


void loop() {
  if (Serial.available() > 0) {
    int serialVar = Serial.read();
    Serial.println(serialVar, BYTE);
    Serial.println(serialVar, DEC);
    Serial.println(serialVar, BIN);
  }
  if (millis() - lastTimeVar > 500) {
    toggleLED();
    lastTimeVar = millis();
  }
}


void toggleLED() {
  // set the LED on or off:
  digitalWrite(13, ledState);
  // toggle the LED state:
  ledState = !ledState;
}