How to Make ATM machine at home
Circuit:
Download Programming:
#include <Servo.h>
#include <MFRC522.h>
#include <LiquidCrystal_I2C.h>
#include <Keypad.h>
#include <SPI.h>
// Create instances
LiquidCrystal_I2C lcd(0x27,16,2);
MFRC522 mfrc522(10, 9); // MFRC522 mfrc522(SS_PIN, RST_PIN)
Servo myservo1;
char initial_password[4] = {'0', '8', '0', '6'}; // Variable to store initial password
String tagUID = "43 19 8A 1A"; // String to store UID of tag. Change it with your tag's UID
char password[4]; // Variable to store users password
boolean RFIDMode = true; // boolean to change modes
char key_pressed = 0; // Variable to store incoming keys
uint8_t i = 0; // Variable used for counter
const int buzzer= 5;
const int motor= 7;
// defining how many rows and columns our keypad have
const byte rows = 4;
const byte columns = 4;
int val = 0;
int myval = 0;
// Keypad pin map
char hexaKeys[rows][columns] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
// Initializing pins for keypad
byte row_pins[rows] = {A0, A1, A2, A3};
byte column_pins[columns] = {2, 1, 0};
// Create instance for keypad
Keypad keypad_key = Keypad( makeKeymap(hexaKeys), row_pins, column_pins, rows, columns);
void setup() {
lcd.init(); // initialize the lcd
lcd.init();
// Print a message to the LCD.
lcd.backlight();
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522
pinMode(buzzer, OUTPUT);
pinMode(motor, OUTPUT);
myservo1.attach(3);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("-----ATM------");
lcd.setCursor(0, 1);
lcd.print("BeyonD Payment's");
delay(5000);
}
void loop() {
// System will first look for mode
if (RFIDMode == true) {
;
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Tap Your Card!");
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent()) {
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial()) {
return;
}
//Reading from the card
String tag = "";
for (byte j = 0; j < mfrc522.uid.size; j++)
{
tag.concat(String(mfrc522.uid.uidByte[j] < 0x10 ? " 0" : " "));
tag.concat(String(mfrc522.uid.uidByte[j], HEX));
}
tag.toUpperCase();
//Checking the card
if (tag.substring(1) == tagUID)
{
// If UID of tag is matched.
lcd.clear();
tone(buzzer,2000);
delay(200);
noTone(buzzer);
lcd.print("Card Detected :)");
delay(1000);
lcd.clear();
lcd.print("Enter Pin:");
lcd.setCursor(0, 1);
RFIDMode = false; // Make RFID mode false
}
else
{
// If UID of tag is not matched.
tone(buzzer,2000);
delay(200);
noTone(buzzer);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Processing");
delay(250);
lcd.setCursor(10, 0);
lcd.print(".");
delay(250);
lcd.setCursor(11, 0);
lcd.print(".");
delay(250);
lcd.setCursor(12, 0);
lcd.print(".");
delay(250);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Processing");
delay(250);
lcd.setCursor(10, 0);
lcd.print(".");
delay(250);
lcd.setCursor(11, 0);
lcd.print(".");
delay(250);
lcd.setCursor(12, 0);
lcd.print(".");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Card Invalid!");
tone(buzzer,5000);
delay(400);
noTone(buzzer);
delay(800);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Please Scan a");
lcd.setCursor(0, 1);
lcd.print("Vaild Card.");
delay(2000);
lcd.clear();
}
}
// If RFID mode is false, it will look for keys from keypad
if (RFIDMode == false) {
key_pressed = keypad_key.getKey(); // Storing keys
if (key_pressed)
{
password[i++] = key_pressed; // Storing in password variable
lcd.print("*");
}
if (i == 4) // If 4 keys are completed
{
delay(200);
if (!(strncmp(password, initial_password, 4))) // If password is matched
{
lcd.clear();
lcd.print("Pin Accepted.");
tone(buzzer,2000);
delay(200);
noTone(buzzer);
delay(500);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Processing");
delay(250);
lcd.setCursor(10, 0);
lcd.print(".");
delay(250);
lcd.setCursor(11, 0);
lcd.print(".");
delay(250);
lcd.setCursor(12, 0);
lcd.print(".");
delay(250);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Processing");
delay(500);
lcd.setCursor(10, 0);
lcd.print(".");
delay(250);
lcd.setCursor(11, 0);
lcd.print(".");
delay(250);
lcd.setCursor(12, 0);
lcd.print(".");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Take Your Cash");
digitalWrite(motor, HIGH);
delay(10000);
delay(500);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Transaction");
lcd.setCursor(0, 1);
lcd.print("Completed.");
digitalWrite(motor, LOW);
while (myval<=90);
myservo1.write(myval);
myval = (myval + 1);
tone(buzzer,2000);
delay(700);
noTone(buzzer);
delay(2000);
lcd.clear();
i = 0;
RFIDMode = true; // Make RFID mode true
}
else // If password is not matched
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Wrong Pin");
lcd.setCursor(0, 1);
lcd.print("Entered :(");
tone(buzzer,5000);
delay(500);
noTone(buzzer);
delay(3000);
lcd.clear();
i = 0;
RFIDMode = true; // Make RFID mode true
}
}
}
}
Demo Video: