Arduino Keypad 4x4 Tutorial: 4 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Cov keyboard nkag tau pom rau cov saib txuas nrog arduino uno thiab 4x4 keypad tag nrho cov lej…

Khoom siv

Arduino ib x 1

4 x 4 Keypad

Txhua yam no tuaj yeem pom ntawm lub xaib no:

BDSpeedy Tech Xeem

Kauj ruam 1: Txuas nrog Arduino

Txuas cov keyboard nrog aruduino digital pins:

Keypad Pin Txuas rau Arduino Pin

1d9 ua

2d8 ua

3d7 ua

4d6 ua

5d5 ua

6d4 ua

7d3 ua

8d2 ua

Kauj ruam 2: Code

CODE:

#suav nrog

const byte numRows = 4

const byte numCols = 4;

keymap [numRows] [numCols] = {{'1', '2', '3', 'A'}, {'4', '5', '6', 'B'}, {'7', '8', '9', 'C'}, {'*', '0', '#', 'D'}};

byte rowPins [numRows] = {9, 8, 7, 6}; // Kab 0 rau 3

byte colPins [numCols] = {5, 4, 3, 2}; // Kab 0 rau 3

// pib qhov piv txwv ntawm chav kawm Keypad

Keypad myKeypad = Keypad (uaKeymap (keymap), rowPins, colPins, numRows, numCols);

void teeb tsa () {

Serial.begin (9600);

}

// Yog tus yuam sij raug nias, tus yuam sij no tau muab khaws cia rau hauv 'keypressed' hloov pauv // Yog tus yuam sij tsis sib npaug rau 'NO_KEY', ces tus yuam sij no tau luam tawm // yog suav = 17, tom qab ntawd suav tau rov pib dua rau 0 (qhov no txhais tau tias tsis muaj tus yuam sij raug nias thaum tag nrho cov txheej txheem luam theej duab

void voj () {

char keypressed = myKeypad.getKey ();

yog (keypressed! = NO_KEY)

{

Serial.print (nias);

}

}

Kauj ruam 3:

ntawm no yog kuv qhov blogspot txuas nws muaj qee daim duab ntxiv uas koj yuav pom muaj txiaj ntsig… blogspot txuas

Kauj Ruam 4: Ntxiv Tsev Qiv Ntawv

Ntxiv tsev qiv ntawv:

Txhawm rau ntxiv lub tsev qiv ntawv mus rau Skeetches> suav nrog lub tsev qiv ntawv ntaus lub npe tsis ncaj ncees "keypad" tom qab ntawv nyem rau nruab.

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