งานปฏิบัติที่ 9

Buzzer  +  Keypad 

wiring diagram

Code 1🔻

#include "LedControl.h"

#include "Keypad.h"

#define C4  262

#define D4  294

#define E4  330

#define F4  349

#define G4  392

#define A4  440

#define B4  494

#define C5  523

char keys[4][4]={

  {7,8,9,0},

  {4,5,6,0},

  {1,2,3,0},

  {0,0,0,0}};

byte rowPins[] = {7,6,5,4};

byte colPins[] = {3,2,1,0};

Keypad keypad = Keypad(makeKeymap(keys),rowPins,colPins,4,4);

int melody[] = {C4,D4,E4,F4,G4,A4,B4,C5};

int dl = 300;

int buzzerpin = 11;

LedControl lc=LedControl(8,10,9,1); 

// Pin 8->DIN, 10->CLK, 9->CS(LOAD), 1 = No.of devices

void setup() 

{

  lc.shutdown(0,false);  

  lc.setIntensity(0,5); 

  lc.clearDisplay(0);

  pinMode(buzzerpin,OUTPUT);

  digitalWrite(buzzerpin,HIGH);

}

void loop() 

{

  char key = keypad.getKey();

  if ((key != NO_KEY) && (key < 9))

  {

    lc.setDigit(0,0,key,false);

    tone(buzzerpin, melody[key-1],dl);

    delay(dl);

    digitalWrite(buzzerpin,HIGH);

  }

}

Code 2🔻

#include "LedControl.h"

#include "Keypad.h"

#define A3  220

#define B3  247

#define C4  262

#define D4  294

#define E4  330

#define F4  349

#define G4  392

#define A4  440

#define ST  0

int melody[] = {G4,G4,G4,G4,G4,G4,E4,D4,E4,G4,C4,G4,E4,

D4,E4,C4,D4,C4,A3,C4,C4,C4,A3,C4,ST,C4,A3,C4,C4,C4,A3,

C4,ST,G4,A4,G4,E4,D4,C4,ST};

float beats[] ={0.5,0.5,0.5,0.5,1.5,0.5,0.5,0.5,0.5,0.5,

1.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,

0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,0.5,1,1,1,1};

int buzzerpin = 11;

int timestop = 70;

char keys[4][4]={

  {'7','8','9','0'},

  {'4','5','6','0'},

  {'1','2','3','0'},

  {'0','0','0','0'}};

byte rowPins[] = {7,6,5,4};

byte colPins[] = {3,2,1,0};

Keypad keypad = Keypad(makeKeymap(keys),rowPins,colPins,4,4);

LedControl lc=LedControl(8,10,9,1); 

// Pin 8->DIN, 10->CLK, 9->CS(LOAD), 1 = No.of devices

int m=1;

int num[2]; //num[0] to num[1]

char number;

int pw;

void setup() 

{

  lc.shutdown(0,false);  

  lc.setIntensity(0,5); 

  lc.clearDisplay(0);    

  pinMode(buzzerpin,OUTPUT);

  digitalWrite(buzzerpin,HIGH);

  randomSeed(analogRead(0));

  pw = random(100);

}

void loop() 

{

  char key = keypad.getKey();

  if (key != NO_KEY)

  {

     if (m==1)

        lc.clearDisplay(0); 

     lc.setChar(0,m,key,false);

     num[m]=key;

     m = m-1;

     if (m < 0)

     {

          delay(500);

          number = ((num[1]-48)*10)+(num[0]-48);

          if (number == pw)

          {

            lc.setChar(0,7,'0',false);

            lc.setChar(0,6,'H',false);

            int dl = 350;

            int numnote;

            numnote = sizeof(melody)/2;  

            for (int i=0;i<numnote;i++) 

            {

              if (melody[i]>0)

                tone(buzzerpin, melody[i],dl*beats[i]);

              delay(dl*beats[i]);

              digitalWrite(buzzerpin,HIGH);

              delay(timestop);

            }

          }

          else if (number < pw)

          {

            lc.setChar(0,7,'P',false);

            lc.setChar(0,6,'P',false);

          }

          else if (number > pw)

          {

            lc.setChar(0,7,'L',false);

            lc.setChar(0,6,'L',false);

          }

          m = 1;

     }

  }

}