How to program software and objects
Dr. Francisco Pérez GarcíaInstitut Pompeu FabraDepartament de Tecnologia
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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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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TINKERING
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THE HACKER ATTITUDE FOR OUR STUDENTS
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WWW.PROCESSING.ORG
Library:Nyatla Augmented Reality for Processing
LibraryOpen Computer Vision for Processing
WWW.ARDUINO.CC
Previous experiences: Contemporary Sciences and Research
http://www.youtube.com/watch?v=F_xkHOpMA9sASE2013 Dr.Pérez 15
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http://www.youtube.com/watch?v=O1MvwAw_MHkASE2013 Dr.Pérez 17
http://www.youtube.com/watch?v=FbuvE1n18ZE
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ESPLORA
LEONARDO
Arduino Uno
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Comments about thecode
Setup codeDefine variables
Loop codeMain code
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Transistor IRF530DC motor
Diode 1N4001Resistor
Arduino Uno
ARDUINO AND A DC MOTOR
AND THISSOURCE CODE
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const int transistorPin = 9; // connected to transistor gate
void setup() {pinMode(transistorPin, OUTPUT);}
void loop() { // loop= repeat again and againdigitalWrite(transistorPin, HIGH); // switch the motor ondelay(50); // wait for 50 milisecondsdigitalWrite(transistorPin, LOW); // switch the motor offdelay(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 forLDR 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
Pulse width modulation
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Microcontroller ATMega328
Sensors(analog inputs)
Brain
Sight
Touch
Taste
SmellHearing
Muscles
Nerves Wires, Circuit
Heart
Actuators(analogoutputs)
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Analog to digital conversion
Analog sensor 0 to 5V
Sampling at Nyquist rate
Value of each sample transformed to binaryformat
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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 assigneda value*/
/*The setup function comes before the loop function, and everythinghappens 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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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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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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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 colour40
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Playing music with Arduinohttp://www.youtube.com/watch?v=YDL9WIVfS9w
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Spychip technology?
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SENSORS FOR ARDUINO
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Transistor: to amplify the signal of the sensor to the Arduino
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Cloud internet of things platforms: www.cosm.comVisualize and store sensor data online www.nimbits.com
www.thingspeak.com49
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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 €50Sometimes very high import taxes from China!
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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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ACKNOWLEGMENTS
The project «Contemporary Sciences and Research» (2012-2014)belongs to the Integrated Plan for Foreign Languages of DepartamentOf Education, Government of Catalonia
More info at www.tecnologies.net
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