Science Week 2013 Activity Centre Cultural de Martorell Integrated Plan for Foreign Languages Institut Pompeu Fabra

1. How to program software and objects
Dr. Francisco Pérez García
Institut Pompeu Fabra
Departament de Tecnologia

2. Donat el caràcter i la finalitat exclusivament docent i eminentment
il·lustrativa de les explicacions a classe d'aquesta presentació,
l’autor s’acull a l’article 32 de la Llei de Propietat Intel·lectual vigent
respecte de l'ús parcial d'obres alienes com ara imatges, gràfics o
altre material contingudes en les diferents diapositives

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4. WHY PROGRAMMING?
• Computer science is no more about
computers than astronomy is about
telescopes. Edsger Dijkstra
• The computer revolution hasn’t happened
yet. Allan Kay
• Debugging is the essence of intellectual
activity. Seymour Pappert
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5. TINKERING
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6. THE HACKER ATTITUDE FOR OUR STUDENTS
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10. WWW.PROCESSING.ORG

11. Library:
Nyatla Augmented Reality for Processing

12. Library
Open Computer Vision for Processing

13. WWW.ARDUINO.CC

15. Previous experiences: Contemporary Sciences and Research
http://www.youtube.com/watch?v=F_xkHOpMA9s
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17. http://www.youtube.com/watch?v=O1MvwAw_MHkASE2013 Dr.Pérez 17

18. http://www.youtube.com/watch?v=FbuvE1n18ZE
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ESPLORA
LEONARDO

20. Arduino Uno
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21. 21
Comments
about the
code
Setup code
Define
variables
Loop code
Main
code

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Transistor IRF530
DC motor
Diode 1N4001
Resistor
Arduino Uno
ARDUINO AND A DC MOTOR
AND THIS
SOURCE CODE

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const int transistorPin = 9; // connected to transistor gate
void setup() {
pinMode(transistorPin, OUTPUT);
}
void loop()
{ // loop= repeat again and again
digitalWrite(transistorPin, HIGH); // switch the motor on
delay(50); // wait for 50 miliseconds
digitalWrite(transistorPin, LOW); // switch the motor off
delay(5000); // wait for 5 seconds
}
SOURCE CODE FOR ARDUINO MOTOR

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MOTOR TO IRRADIATE A SURFACE VERY SLOWLY

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http://www.youtube.com/watch?v=UQEtOJE02wE

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http://www.youtube.com/watch?v=e1iUjelHC6w

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Materials for
LDR and LED-RGB using Arduino
● -4 resistor 220 Ω
● -1 LDR sensor
● -1 RGB LED
● -1 potenciometer
● -1 Arduino Uno
● - Wire
● - Breadboard
● - USB wire AB type or microUSB for Arduino Leonardo

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LDR

31. Pulse width modulation
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Microcontroller ATMega328
Sensors
(analog inputs)
Brain
Sight
Touch
Taste
Smell
Hearing
Muscles
Nerves Wires, Circuit
Heart
Actuators
(analog
outputs)

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Analog to digital conversion
Analog sensor 0 to 5V
Sampling at Nyquist rate
Value of each sample
transformed to binary
format

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37. SOURCE CODE: RGB-LED colour change depending on light level
int valueLDR = 1;
int ledRed = 9;
int ledGreen=10;
int ledBlue=11;
int pinLDR = 1;
//3 outputs for each RGB colour: red, green and blue
void setup(){
pinMode(ledRed, OUTPUT);
pinMode(ledGreen, OUTPUT);
pinMode(ledBlue, OUTPUT);
analogReference(EXTERNAL);
}
/*First we define the variable name as integer and it is assigned
a value*/
/*The setup function comes before the loop function, and everything
happens inside the curly backets*/
/*Outputs are declared in setup, this is done by
usingthe pinMode function, in this particular
example we declare numbers 9, 10 and 11 as
OUTPUT (in capital letters)*/
// or /*Comment*/ can be anywhere, do not affect code, help others
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38. void loop() {
valueLDR = analogRead(pinLDR);
if(valueLDR >= 1023){
digitalWrite(ledRed, 128);
digitalWrite(ledGreen, 0);
digitalWrite(ledBlue, 0);
// digitalWrite to obtain different colours
}
else if((valueLDR >= 959) & (valueLDR < 1023)){
digitalWrite(ledRed, 255);
digitalWrite(ledGreen, 0);
digitalWrite(ledBlue, 0);
}
The “void” in the header is what the function will return (or spit out)
when it happens, in this case it returns nothing so it is void
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39. else if((valueLDR >= 895) & (valueLDR < 959)){
digitalWrite(ledRed, 255);
digitalWrite(ledGreen, 128);
digitalWrite(ledBlue, 0);}
else if((valueLDR >= 831) & (valueLDR < 895)){
digitalWrite(ledRed, 255);
digitalWrite(ledGreen, 255);
digitalWrite(ledBlue, 0);}
else if((valueLDR >= 767) & (valueLDR < 831)){
digitalWrite(ledRed, 255);
digitalWrite(ledGreen, 255);
digitalWrite(ledBlue, 128);}
else if((valueLDR >= 703) & (valueLDR < 767)){
digitalWrite(ledRed, 128);
digitalWrite(ledGreen, 255);
digitalWrite(ledBlue, 255);
}
else if((valueLDR >= 639) & (valueLDR < 703)){
digitalWrite(ledRed, 128);
digitalWrite(ledGreen, 128);
digitalWrite(ledBlue, 255);}
else if((valueLDR >= 575) & (valueLDR < 639)){
digitalWrite(ledRed, 0);
digitalWrite(ledGreen, 128);
digitalWrite(ledBlue, 255);}
else if((valueLDR >= 511) & (valueLDR < 575)){
digitalWrite(ledRed, 0);
digitalWrite(ledGreen, 0);
digitalWrite(ledBlue, 255);}
else if((valueLDR >= 447) & (valueLDR < 511)){
digitalWrite(ledRed, 0);
digitalWrite(ledGreen, 0);
digitalWrite(ledBlue, 128);
}
else if((valueLDR >= 383) & (valueLDR < 447)){
digitalWrite(ledRed, 0);
digitalWrite(ledGreen, 128);
digitalWrite(ledBlue, 0);}
else if((valueLDR >= 319) & (valueLDR < 383)){
digitalWrite(ledRed, 0);
digitalWrite(ledGreen, 255);
digitalWrite(ledBlue, 0);}
else if((valueLDR >= 255) & (valueLDR < 319)){
digitalWrite(ledRed, 128);
digitalWrite(ledGreen, 255);
digitalWrite(ledBlue, 0);}
else if((valueLDR >= 191) & (valueLDR < 255)){
digitalWrite(ledRed, 0);
digitalWrite(ledGreen, 255);
digitalWrite(ledBlue, 128);
}
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40. else if((valueLDR >= 127) & (valueLDR < 191))
{
digitalWrite(ledRed, 128);
digitalWrite(ledGreen, 255);
digitalWrite(ledBlue, 128);}
else if((valueLDR >= 63) & (valueLDR < 127))
{
digitalWrite(ledRed, 128);
digitalWrite(ledGreen, 128);
digitalWrite(ledBlue, 128);}
else if((valueLDR >=0) & (valueLDR < 63)){
digitalWrite(ledRed, 55);
digitalWrite(ledGreen, 55);
digitalWrite(ledBlue, 55); }
else
{
digitalWrite(ledRed, 0);
digitalWrite(ledGreen, 0);
digitalWrite(ledBlue, 0);
}
}
void color(int red, int green, int blue)
{
analogWrite(ledRed, 255-red);
analogWrite(ledGreen, 255-green);
analogWrite(ledBlue, 255-blue);
// PWM for every colour
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http://www.youtube.com/watch?v=hxkYNy4zTWc

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43. Playing music with Arduino
http://www.youtube.com/watch?v=YDL9WIVfS9w
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Spychip technology?

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47. SENSORS FOR
ARDUINO
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48. Transistor: to amplify the signal of the
sensor to the Arduino
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49. Cloud internet of things platforms: www.cosm.com
Visualize and store sensor data online www.nimbits.com
www.thingspeak.com49

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51. Approximate pricing
• Arduino Leonardo €25
• Resistors, LEDs, LDR around €5
• Breadboard €10
• MQ sensors (CO, CH4, etc) €5 each
• MG811 (CO2 sensor) €50
• Voice recognition shield €60
• Arduino for Android €50
Sometimes very high import taxes from China!
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52. Resources
• www.arduino.cc
• http://blocs.xtec.cat/mecanica
• www.sparkfun.com
• www.fritzing.org
• www.buildinginternetofthings.com
• www.atmel.com/avr
• www.avrfreaks.net
• www.mcselec.com
• www.argentdata.com
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53. ACKNOWLEGMENTS
The project «Contemporary Sciences and Research» (2012-2014)
belongs to the Integrated Plan for Foreign Languages of Departament
Of Education, Government of Catalonia
More info at www.tecnologies.net
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