Arduino Starter Project 14

tweak-logo.cpp

void setup() {
    // open serial connection
    Serial.begin(9600);
}

void loop() {
    // send sensor value
    Serial.write(analogRead(A0) / 4);

    // let the ADC stabilize
    delay(1);
}


import processing.serial.*;

Serial myPort;
PImage logo;

int bgcolor = 0;

void setup() {
  size(1, 1);
  surface.setResizable(true);
  colorMode(HSB, 255);

  // load image LOCALLY (put it in the sketch's data folder)
  logo = loadImage("arduino_loop.png");
  if (logo == null) {
    println("image failed to load. be real.");
    exit();
  }
  surface.setSize(logo.width, logo.height);

  // list serial ports
  println("available serial ports:");
  println(Serial.list());

  // pick the correct port index manually if needed
  myPort = new Serial(this, Serial.list()[0], 9600);
  myPort.clear();
}

void draw() {
  if (myPort.available() > 0) {
    bgcolor = myPort.read() & 0xff; // keep it 0–255
    println(bgcolor);
  }

  background(bgcolor, 255, 255);
  image(logo, 0, 0);
}