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Password Security Lock Circuit Using 4×4 Keypad and Arduino
Boțoghină David-Ioan
Introducere
Acest proiect are ca scop construirea unei incuietori care pentru a fi dezactivata, va cere introducerea unei parole de 6 biti.
Descriere generală
Hardware Design
- 1x Arduino Uno
- 1x Breadboard
- 2x LEDs
- 4×4 keypad
- 1x LCD I2C
- Some Wires
- A fan
Electrical Schematic:
Software Design
#include <Wire.h> #include <LiquidCrystal_I2C.h> #include <Keypad.h>
#define Password_Length 8
int signalPin = 12; int relay_pin = 10;
char Data[Password_Length]; char Master[Password_Length] = “123A456”; byte data_count = 0, master_count = 0; bool Pass_is_good; char customKey;
const byte ROWS = 4; const byte COLS = 4;
char hexaKeys[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 customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup(){
lcd.init(); lcd.backlight(); pinMode(signalPin, OUTPUT); pinMode(13, OUTPUT); pinMode(relay_pin, OUTPUT);
}
void loop(){
lcd.setCursor(0,0);
lcd.print("Enter Password:");
customKey = customKeypad.getKey();
if (customKey){
Data[data_count] = customKey;
lcd.setCursor(data_count,1);
lcd.print(Data[data_count]);
data_count++;
}
if(data_count == Password_Length-1){
lcd.clear();
if(!strcmp(Data, Master)){
lcd.print("Correct");
digitalWrite(signalPin, HIGH);
digitalWrite(13, HIGH);
delay(3000);
digitalWrite(signalPin, LOW);
digitalWrite(13, HIGH);
delay(3000);
digitalWrite(13, LOW);
}
else{
lcd.print("Incorrect");
digitalWrite(10, HIGH);
delay(1000);
digitalWrite(10, LOW);
}
lcd.clear();
clearData();
}
}
void clearData(){
while(data_count !=0){
Data[data_count--] = 0;
}
return;
}
Rezultate Obţinute
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