Pour ce projet il vous faudra:
-un clavier 4X4
Pour le code il vous suffit de copier de le code et le coller dans l'IDE.Le code est ci dessous:
#include <LiquidCrystal•h>
#include <Keypad•h>
#define redLED 10
#define greenLED 11
char* password ="3132";
int pozisyon = 0;
const byte rows = 4;
const byte cols = 4;
char keyMap [rows] [cols] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte rowPins [rows] = {1, 2, 3, 4};
byte colPins [cols] = {5, 6, 7, 8};
Keypad myKeypad = Keypad( makeKeymap(keyMap), rowPins, colPins, rows, cols);
LiquidCrystal lcd (A0, A1, A2, A3, A4, A5);
void setup(){
lcd.begin(16, 2);
pinMode(redLED, OUTPUT);
pinMode(greenLED, OUTPUT);
setLocked (true);
}
void loop(){
char whichKey = myKeypad.getKey();
lcd.setCursor(0, 0);
lcd.print(" Welcome");
lcd.setCursor(0, 1);
lcd.print(" Enter Password");
if(whichKey == '*' || whichKey == '#' || whichKey == 'A' ||
whichKey == 'B' || whichKey == 'C' || whichKey == 'D'){
pozisyon=0;
setLocked (true);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" Invalid Key!");
delay(1000);
lcd.clear();
}
if(whichKey == password [pozisyon]){
pozisyon ++;
}
if(pozisyon == 4){
setLocked (false);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("*** Verified ***");
delay(3000);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" Mert Arduino");
lcd.setCursor(0, 1);
lcd.print("Tutorial Project");
delay(7000);
lcd.clear();
}
delay(100);
}
void setLocked(int locked){
if(locked){
digitalWrite(redLED, HIGH);
digitalWrite(greenLED, LOW);
}
else{
digitalWrite(redLED, LOW);
digitalWrite(greenLED, HIGH);
}
}