PROYECTO ESQUELETO

Programa de Arduino:

/*

* KnockKnockBox

*

* Knock on this coffin to awake the dead. Don’t worry, the skeleton won’t get out and come after you but it will reply from inside.

*

* Ok, we know that you know that there isn’t a real skeleton there. It's really a piezo used as a knock sensor. 

* After you've made this project you might think of a handy way to use this sensor in other ways.

* Check out this secret knock detecting lock for some inspiration: http://www.youtube.com/watch?v=zE5PGeh2K9k /

#include <EducationShield.h>

//The number of knocks that can be recorded

#define MAX_KNOCKS 30

PiezoKnockSensor sensor=PiezoKnockSensor(A0);

int speaker = 8;

//An array for remembering the knock pattern

long timer[MAX_KNOCKS];

//If it has started recording

boolean started;

//Used for calculating if you have finished the pattern

long timeoutBase;

//If you stop knocking for the period of timeout, it'll

//stop recording

long timeout=2000;

//Keep track of the number of knocks you've knocked

int currentKnock;

#define PINR 3

#define PINRD 11

void setup(){

 //define the threshold and debounce time of the knock

 //sensor. Threshold defines how hard you need to knock,

 //debounce time prevents the sensor from detecting

 //false knocks, but also limits how rapid you can knock.

 sensor.config(100,80);

 pinMode(PINR,OUTPUT);

 pinMode(PINRD,OUTPUT);

 //initializing the values

 started=false;

 timeoutBase=0;

 currentKnock=0;

 clearArray();

}

void loop(){

 //Knock sensor waits for a short time if a knock is detected

 //and then move on.

 if(sensor.knocked(20)){

   //If it's the first knock in the round, start recording

   if(!started){

     started=true;

   }

   long currentTime=millis();

   //Reset timeout

   timeoutBase=currentTime;

   //Save the amount of milliseconds that have

   //passed since the last knock

   timer[currentKnock]=currentTime;

   currentKnock++;

 }

 if(started){

   //If recording has started and you stop

   //knocking for the time of "timeout", it'll

   //stop recording and play it back to you.

   if(millis()-timeoutBase>timeout){

     playback();

     //reset the parameters, so a new round begins

     started=false;

     clearArray();

     currentKnock=0;

   }

 }

}

void clearArray(){

 //clean up values in the timer array

 for(int i=0;i<MAX_KNOCKS;i++){

   timer[i]=0;

 }

}

void playback(){

 //Play the knock pattern back to you through the

 //speaker piezo

 digitalWrite(PINR,HIGH);

 digitalWrite(PINRD,HIGH);

 for(int i=0;timer[i]!=0;i++){

   //Make a beep sound with tone 200 for 30 milliseconds

   tone(speaker, 800, 30);

   if(timer[i+1]){

     //Wait the same amount of milliseconds that was detected

     //between the knocks

     delay(timer[i+1]-timer[i]);

   }

 }

delay(5000);

digitalWrite(PINR,LOW);

digitalWrite(PINRD,LOW);

}