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Matthew Williams's talk on the Arduino at the Orlando Ruby Users Group on October 17th, 2008
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Physical Computing with Ruby and Arduino
Matthew Williams @mwilliams
Orlando Ruby Users Group
Barcamp Orlando Anyone?
What's Arduino?
http://www.arduino.cc
Arduino haz Flavor?
http://rad.rubyforge.org/ http://github.com/atduskgreg/rad/
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
Arduino IDE
RAD IDE
Ruby + Physical Computing
•Control an Arduino with Ruby •RubyToC •AVRGCC
•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 smithdemoshisdangershield/
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+
Barduinotender
http://github.com/mwilliams/barduinotender
Barduinotender Recipe drink 'Screwdriver' do serve_in 'Highball Glass' ingredients do 2.ounces :vodka 5.ounces :orange_juice end end
Want More? •RubyConf 2008 •Friday •10:25 11:05 •Room 3
•Greg Borenstein •(Big help with this demo)
Let's Serve Some Drinks (and look at code)
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