Getting Started with Arduino

Coding

There are two sketches that you'll be running: one Processing sketch, and one Arduino sketch. Here is the code for the Processing sketch. You can download it from www.makezine.com/getstartedarduino.

Example 6-1. Arduino networked lamp parts of the code are inspired by a blog post by Tod E. Kurt (todbot.com)

import processing.serial.*; String feed = "http://blog.makezine.com/index.xml"; int interval = 10; // retrieve feed every 60 seconds; int lastTime; // the last time we fetched the content int love = 0; int peace = 0; int arduino = 0; int light = 0; // light level measured by the lamp Serial port; color c; String cs; String buffer = ""; // Accumulates characters coming from Arduino PFont font; void setup() { size(640,480); frameRate(10); // we don't need fast updates font = loadFont("HelveticaNeue-Bold-32.vlw"); fill(255); textFont(font, 32); // IMPORTANT NOTE: // The first serial port retrieved by Serial.list() // should be your Arduino. If not, uncomment the next // line by deleting the // before it, and re-run the // sketch to see a list of serial ports. Then, change // the 0 in between [ and ] to the number of the port // that your Arduino is connected to. //println(Serial.list()); String arduinoPort = Serial.list()[0]; port = new Serial(this, arduinoPort, 9600); // connect to Arduino lastTime = 0; fetchData(); } void draw() { background( c ); int n = (interval - ((millis()-lastTime)/1000)); // Build a colour based on the 3 values c = color(peace, love, arduino); cs = ...