1 mobil robototexnikani o’qitish bo’yicha metodika 2021

Surat 44.2: Klaviatura pinlari
Sketch
#include
#include
#include
Servo myservo;

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155
Password password = Password(“2468”);
const byte ROWS = 4;
const COLS = 4;
char keys [ROWS] [COLS] = {
 
{‘1’, ‘2’, ‘3’, ‘A’}, 
{‘4’, ‘5’, ‘6’, ‘B’},
{‘7’,  ‘8’, ‘9’, ‘C’},
{‘*’, ‘0’, ‘#’, ‘D’} 
};
byte rowPins [ROWS] = { 9,8,7,6 };
byte colPins [COLS] = { 5,4,3,2 };
Keypad keypad = Keypad(makeKeymap(key), 
rowPins, colPins, ROWS, COLS);
void setup()    {
 Serial.begin(9600);
 delay(200);
 
pinMode(11, OUTPUT);
 
 
pinMode(12, OUTPUT);
 myservo.attach(13);
 keypad.addEventListener(keypadEvent);
}
void loop()     {
 keypad.getKey();
 myservo.write(0);
}
void keypadEvent(KeypadEvent eKey)    {
 
switch (keypad.getState() )   {
  case 
PRESSED;
  Serial.print(“Pressed: 
“);
  Serial.printIn(eKey);
 
 
Switch (eKey)   {

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156
Surat 44.3: Klaviatura 
ulangan sxema
 
 
 
case ‘*’: check Password(); break;
 
 
 
case ‘#’: password.reset(); break;
   default: 
password.append(eKey);
  }
}
}
void checkPassword(){
 
if (password.evaluate()  ) {
  Serial.printIn(“Success”);
  myservo.write(90);
  digitalWrite(11, 
HIGH);
  delay(500);
  digitalWrite(11, 
LOW);
 
} else {
  Serial.prinIn(“Wrong”);
  myservo.write(0);
  digitalWrite(12, 
HIGH);
  delay(500);
  digitalWrite(12,LOW);
 }
} 

---

157
Surat 45.1: Mahaliy Arduino
44.
Ushbu loyihada siz minimal komponentlardan 
foydalangan holda Arduino analogini yaratasiz.
MAHALLIY ARDUINO 
PLATASI
Kerakli komponentlar:
    Mikrokontroller ATMEL Atmega 328P
    prototip yaratish uchun maket plata;
    Svetodiod
    Qarshilik 220 Оm 3 dona.
    Kvarts generator 16 МНz chastota bilan (HC-495)
    5 voltli stabilizator kuchlanishiL7805cv
    100 mF elektroditik kondensator
    9V batareyali terminal
    22 mF quvvatga ega disk kondansatkichlari
    Tugma
    Batareya kuchlanishi 9V

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158
Ushbu arzon plata do’kondan asl Arduino o’rnini 
bosishi mumkin, chunki bu uning to’liq apparat nusxasi. 
O’zingizning platangizni qimmatroq Arduino platasi 
o’rniga doimiy loyihalarda ishlatishingiz mumkin.
L7805cv 5V kuchlanish regulyatori kuchlanishni kuzatib 
boradi va 9V batareyadan 5V gacha bo’lgan kuchlanishni, 
Atmega chipi ishlaydigan darajaga tushiradi va shu 
bilan mikrokontroller va qo’shimcha qismlarni himoya 
qiladi. 16 MHz kristalli osilator (45.2-surat) Arduino-
ga vaqtni hisoblashga imkon beradi va kondensatorlar 
kuchlanishni tenglashtirish uchun filtr vazifasini bajaradi.