Password Hint!

For this project, users need to follow some steps to find the required password. They need to access the serial monitor and type '1', an equation will appear on the serial monitor, and a message will display on the LCD. Users need to type '2' and '3' to get the rest of the other equations. The answers to the equations are the digits of the password. They need to press the digits at the same order of the equations; they also need to press the sequence on the keypad twice.  

Figure 1, Video

Figure 2, Picture

Figure 3, Sketch

Figure 4, Instructions

Figure 5, Schematic

	#include <Keypad.h>
	#include <LiquidCrystal.h>
	//lcd pins
	LiquidCrystal lcd(A0, A1, A2, A3, A4, A5);
	//keypad info
	const byte ROWS = 4; //four rows
	const byte COLS = 4; //four columns
	//define the cymbols on the buttons of the keypads
	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}; //connect to the row pinouts of the keypad
	byte colPins[COLS] = {5, 4, 3, 2}; //connect to the column pinouts of the keypad
	//initialize an instance of class NewKeypad
	Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
	char* password ="2580"; //create password
	int pos = 0; //keypad position
	void setup(){
	Serial.begin(9600);
	// set up the LCD's number of columns and rows:
	lcd.begin(16, 2);
	}
	void loop(){
	char customKey = customKeypad.getKey(); //def. which key is pressed
	//begin
	lcd.setCursor(0, 0);
	lcd.print("Hi!");
	lcd.setCursor(0, 1);
	lcd.print("Enter Password:");
	//Invalid keys
	if(customKey == '*' || customKey == '#' ||
	customKey == 'A' || customKey == 'B' ||
	customKey == 'C' || customKey == 'D') {
	pos = 0;
	lcd.clear();
	lcd.setCursor(0, 0);
	lcd.print(" Invalid Key!");
	delay(1000);
	lcd.clear();
	}
	//password varification
	if(customKey == password[pos]) {
	pos ++;
	}
	if(pos == 4){
	lcd.clear();
	lcd.setCursor(0, 0);
	lcd.print(" **Varified!**");
	lcd.setCursor(0, 1);
	lcd.print(" **Good Job!**");
	delay(5000);
	lcd.clear();
	pos = 0;
	}
	//serial monitor data
	if(Serial.available() > 0) {
	char p = Serial.read();
	Serial.println(p);
	if(p == '1'){
	Serial.println("1+1=?");
	lcd.clear();
	lcd.setCursor(0, 0);
	lcd.print("EASY!");
	delay(5000);
	lcd.clear();
	}
	if(p == '2'){
	Serial.println("your first answer+1+1+1=?");
	lcd.clear();
	lcd.setCursor(0, 0);
	lcd.print("Almost there!");
	delay(5000);
	lcd.clear();
	}
	if(p == '3'){
	Serial.println("480/6=?");
	lcd.clear();
	lcd.setCursor(0, 0);
	lcd.print("You have it now!");
	delay(5000);
	lcd.clear();
	}
	}
	}

view raw gistfile1.txt hosted with ❤ by GitHub