Hello real world!An introduction to physical computing

Tom Luyten & Gaston Jamin

• Blinks LEDS• Drives motors• Makes sound• Senses your presence• Detects gas• …

= electronic prototypingtool for designers

Anatomy of an interactive device

Source: Getting started with Arduino – Massimo Banzi

Some possible hardware sensors:• potentiometer• Sliding potentiometer• Switch• Tiltswitch• Accelerometer• Proximity sensor• Photocell• Flexometer• Camera• WII• Kinect• Force sensing sensor• Temperature sensor• Gas sensor• Barometric sensor• Humidity sensor• RFID reader• GPS• Reed switch• Gyroscope• ...

Some possible hardware actuators:• Vibration motor• Regular motor• Sound• Muscle stimulus• Light• images• The web• Pump• Solenoid• Resistance wire• Relais• Radio frequency• …

Boundaries are not definedExample: a tablet can be it’s own sensor and actuator, or can be paired/extended.

Arduinocomputer

tabletcloud

cell phone

Source: Getting started with Arduino – Massimo Banzi

workshop

USB connection

Power source(external)

Digital in/outputs + PWM*

5V + ground Analog in/outputs

processor

*PWMpulse width modulation : digital signal mimmicing an analogue oneused to fade lights, drive motors, create tone,…

The arduino way“the Arduino philosophy is based on making designs rather

than talking about them. It is a constant search for faster

and more powerful ways to build better prototypes. We

have explored many prototyping techniques and developed

ways of thinking with our hands.: • Prototyping• Tinkering• Patching• Circuit bending• Hacking• collaboration

Electronics 101

• Current is a circle – starts at an i/o port, flows to GRND

• Use red for positive wires (from output)• Use black for negative wires (to GRND)

• Look it up, before you hook it up

Get the software

• Current is a circle – starts at an i/o port, flows to GRND • Look it up, before you hook it uphttp://www.arduino.cc

http://arduino.cc/en/Guide/Environment

Standalone example

Hello world! (=blink)

Hello world! (=blink)/* Blink Turns on an LED on for one second, then off for one second, repeatedly. This example code is in the public domain. */ // Pin 13 has an LED connected on most Arduino boards.// give it a name:int led = 13;

// the setup routine runs once when you press reset:void setup() { // initialize the digital pin as an output. pinMode(led, OUTPUT); }

// the loop routine runs over and over again forever:void loop() { digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(led, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second}

File examples basics BLINK

Hello world! (=blink)

Plug inPress play…HELLO WORLD!

Image: adafruit learning systems

Producing sound

Producing sound

Image: adafruit learning systems

Producing sound

/*Adafruit Arduino - Lesson 10. Simple Sounds*/ int speakerPin = 12; int numTones = 10;int tones[] = {261, 277, 294, 311, 330, 349, 370, 392, 415, 440};// mid C C# D D# E F F# G G# A void setup(){ for (int i = 0; i < numTones; i++) { tone(speakerPin, tones[i]); delay(500); } noTone(speakerPin);} void loop(){}

http://learn.adafruit.com/adafruit-arduino-lesson-10-making-sounds/playing-a-scale

Sensing distancehttp://arduino.cc/en/Tutorial/Ping?from=Tutorial.UltrasoundSensor

Sensing distanceFile examples sensors PING

Combination

CombinationBlackboard

Make Arduino talk to your computer

Make Arduino talk to your computerhttp://www.processing.org

Make Arduino talk to your computerhttp://www.processing.org

Make Arduino talk to your computerhttp://www.processing.org

Serial communication send

Serial communication receive

This is just a start

There are tons of• Tutorials• Code snippets• Wiring diagramsAvailable to aid you in your experiments

See the Blackboard environment for links.

Next week…

Tinker, hack, break, rebuild, connect and explore!