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...........................................................................Diagram...................................................................
................................................................. Arduino Car Code...........................................................
char t;
void setup() {
pinMode(13,OUTPUT); //left motors forward
pinMode(12,OUTPUT); //left motors reverse
pinMode(11,OUTPUT); //right motors forward
pinMode(10,OUTPUT); //right motors reverse
pinMode(9,OUTPUT); //Led
Serial.begin(9600);
}
void loop() {
if(Serial.available()){
t = Serial.read();
Serial.println(t);
}
if(t == 'F'){ //move forward(all motors rotate in forward direction)
digitalWrite(13,HIGH);
digitalWrite(11,HIGH);
}
else if(t == 'B'){ //move reverse (all motors rotate in reverse direction)
digitalWrite(12,HIGH);
digitalWrite(10,HIGH);
}
else if(t == 'L'){ //turn right (left side motors rotate in forward direction, right side motors doesn't rotate)
digitalWrite(11,HIGH);
}
else if(t == 'R'){ //turn left (right side motors rotate in forward direction, left side motors doesn't rotate)
digitalWrite(13,HIGH);
}
else if(t == 'W'){ //turn led on or off)
digitalWrite(9,HIGH);
}
else if(t == 'w'){
digitalWrite(9,LOW);
}
else if(t == 'S'){ //STOP (all motors stop)
digitalWrite(13,LOW);
digitalWrite(12,LOW);
digitalWrite(11,LOW);
digitalWrite(10,LOW);
}
delay(100);
}
.................................................................RFID Code...........................................................................
#include <SPI.h>
#include <MFRC522.h>
#define RST_PIN 9 // Configurable, see typical pin layout above
#define SS_PIN 10 // Configurable, see typical pin layout above
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
String read_rfid; // Add how many you need and don't forget to include the UID.
String ok_rfid_1="f9a112e8"; // This is for my main RFID Card. aka. The one I will be using to turn on my PC. Can also be used to shut it down if you want to.
String ok_rfid_2="19e3c1b1"; // This is for the RFID Keyfob. aka. Shutdown Keyfob. Not advisable tho. Just shutdown your PC normally.
int lock = 7; // For the Card.
int lock2 = 7; // For the Keyfob.
/*
* Initialize.
*/
void setup() {
Serial.begin(9600); // Initialize serial communications with the PC
while (!Serial); // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
SPI.begin(); // Init SPI bus
mfrc522.PCD_Init(); // Init MFRC522 card
//Choose which lock below:
pinMode(lock, OUTPUT);
pinMode(lock2, OUTPUT);
}
/*
* Helper routine to dump a byte array as hex values to Serial.
*/
void dump_byte_array(byte *buffer, byte bufferSize) {
read_rfid="";
for (byte i = 0; i < bufferSize; i++) {
read_rfid=read_rfid + String(buffer[i], HEX);
}
}
void open_lock() {
//Use this routine when working with Relays and Solenoids etc.
digitalWrite(lock,HIGH);
delay(500);
digitalWrite(lock,HIGH);
}
void close_lock2() { // You can also just use the card to shutdown your PC. This is just for those moments that you really need to shut it down quickly.
//Use this routine when working with Relays and Solenoids etc.
digitalWrite(lock2, LOW);
delay(5000);
digitalWrite(lock2,LOW);
}
void loop() {
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent())
return;
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial())
return;
dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size);
Serial.println(read_rfid);
if (read_rfid==ok_rfid_1) {
//ok, open the door.
open_lock();
}
Serial.println(read_rfid);
if (read_rfid==ok_rfid_2) {
//ok, open the door.
close_lock2();
}
//Add below as many "keys" as you want
//if (read_rfid==ok_rfid_2) {
//also ok, open the door
// open_lock();
//}
// else not needed. Anything else is not ok, and will not open the door...
}
Comments
#include
#define SS_PIN 10 // Define SS_PIN for RFID module
#define RST_PIN 9 // Define RST_PIN for RFID module
#define MOTOR_PIN 5 // Define pin connected to the motor driver
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create an instance of the RFID module
void setup() {
Serial.begin(9600); // Start serial communication
SPI.begin(); // Initiate SPI communication
mfrc522.PCD_Init(); // Initiate RFID module
pinMode(MOTOR_PIN, OUTPUT); // Set MOTOR_PIN as output
stopMotor(); // Make sure the motor is initially stopped
}
void loop() {
// Look for new RFID cards
if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) {
Serial.println("Card detected!");
// Check if the detected card is authorized
if (isAuthorizedCard()) {
Serial.println("Access granted!");
startMotor(); // Start the motor when an authorized card is detected
delay(5000); // Run the motor for 5 seconds (adjust as needed)
stopMotor(); // Stop the motor after the specified time
} else {
Serial.println("Access denied!");
}
mfrc522.PICC_HaltA(); // Halt the card to stop further reads
}
}
bool isAuthorizedCard() {
// Replace the following UID with the UID of the authorized RFID card
byte authorizedCardUID[] = {0xAA, 0xBB, 0xCC, 0xDD};
// Compare the detected card's UID with the authorized card's UID
for (byte i = 0; i < mfrc522.uid.size; i++) {
if (mfrc522.uid.uidByte[i] != authorizedCardUID[i]) {
return false; // Not an authorized card
}
}
return true; // Authorized card detected
}
void startMotor() {
digitalWrite(MOTOR_PIN, HIGH); // Turn on the motor
}
void stopMotor() {
digitalWrite(MOTOR_PIN, LOW); // Turn off the motor
}