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Physical Computing with Ruby and Arduino Matthew Williams @mwilliams Orlando Linux Users Group

What's Arduino? http://www.arduino.cc

Arduino 14 Digital I/O (6 PWM) 6 Analog In 16kb Flash Memory 2kb for boot loader 16MHz Clock Speed Serial Communication USB Powered (or AC) I2C

http://rad.rubyforge.org/ http://github.com/atduskgreg/rad/

Ruby + Physical Computing Control an Arduino with Ruby RubyToC AVR-GCC Most of the Arduino API ported to Ruby Additional libraries Serial communications Servos

Arduino Code int ledPin = 13; void setup() { pinMode(ledPin, OUTPUT); } void loop() { digitalWrite(ledPin, HIGH); delay(1000); digitalWrite(ledPin, LOW); delay(1000); }

RAD Code class HelloWorld < ArduinoSketch output_pin 7, :as => :led def loop blink led, 1000 end end

RAD Methods input_pin(s) output_pin(s) digitalWrite| digitalRead analogWrite | analogRead serial_print | serial_read Keeping it simple It's all about the hardware

Coming Soon Testing Arduino Simulator Better RubyToC Support More "Out of the Box Support" LCD's OLED Displays Motors

Arduino Shields http://www.nycresistor.com/2008/04/21/zach-smith-demos-his-danger-shield/

http://www.liquidware.com/projects/8/Pin+Visualizer

Buy an Arduino http://www.sparkfun.com http://ww.makezine.com $34.95 (or cheaper)

Awesome Resources http://makezine.com/getstartedarduino/ http://blog.makezine.com/archive/arduino/ http://arduino.cc/playground

Barduino http://github.com/mwilliams/barduino

The Barduino Arduino Breadboard + Wire Transistors Relays Windshield Washer Fluid Pumps ~$60 Total? 2 pumps, could handle 14+

Barduino-tender http://github.com/mwilliams/barduino-tender

Barduino-tender Recipe drink 'Screwdriver' do serve_in 'Highball Glass' ingredients do 2.ounces :vodka 5.ounces :orange_juice end end

Let's Serve Some Drinks (and look at code)

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Physical Computing with the Arduino platform and Ruby

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