Matemáticas al poder!

Ejemplos sacados de http://www.ladyada.net/learn/arduino/

/*
 * Math is fun!
 */

int a = 5;
int b = 10;
int c = 20;

void setup()                    // run once, when the sketch starts
{
  Serial.begin(9600);           // set up Serial library at 9600 bps

  Serial.println("Here is some math: ");

  Serial.print("a = ");
  Serial.println(a);
  Serial.print("b = ");
  Serial.println(b);
  Serial.print("c = ");
  Serial.println(c);

  Serial.print("a + b = ");       // add
  Serial.println(a + b);

  Serial.print("a * c = ");       // multiply
  Serial.println(a * c);
  
  Serial.print("c / b = ");       // divide
  Serial.println(c / b);
  
  Serial.print("b - c = ");       // subtract
  Serial.println(b - c);
}

void loop()                     // we need this to be here even though its empty
{
}

/*
 * Math is fun!
 */

#include "math.h"               // include the Math Library

int a = 3;
int b = 4;
int h;

void setup()                    // run once, when the sketch starts
{
  Serial.begin(9600);           // set up Serial library at 9600 bps

  Serial.println("Lets calculate a hypoteneuse");

  Serial.print("a = ");
  Serial.println(a);

  Serial.print("b = ");
  Serial.println(b);
  
  h = sqrt( a*a + b*b );
  
  Serial.print("h = ");
  Serial.println(h);
}

void loop()                // we need this to be here even though its empty
{
}

/*
 * Drive size calculator!
 */

int drive_gb = 5;
int drive_mb;

void setup()                    // run once, when the sketch starts
{
  Serial.begin(9600);           // set up Serial library at 9600 bps

  Serial.print("Your HD is ");
  Serial.print(drive_gb);
  Serial.println(" GB large.");

  drive_mb = 1024 * drive_gb;

  Serial.print("It can store ");
  Serial.print(drive_mb);
  Serial.println(" Megabytes!");
}

void loop()                 // we need this to be here even though its empty
{

}

Ejercicio 1. Modificar el código para que se puedan introducir por puerto serie los tamanos