TURN ON LIGHTS WITH RFID CARD

Hi guys! Today we are going make Rfid Card controlled light switch.

When we show first card to reader lights will turn on. When we show second card lights will turn off.

Also you will learn what is the EEPROM.

Let's start..

Watch the video. If you have a problem, you can add a comment..:)
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Step 1: What Will We Use?

• Arduino
• RFID Module
• Relay Module
• Breadboard

Step 2: Connections;

RC522 to Arduino;

3.3v to 3.3v

RST to D9

GND TO GND

IRQ TO (NONE)

MISO TO D12

MOSI TO D11

SCK TO D13

SDA TO D10

Relay To Arduino;

Gnd to Gnd

Vcc to 5v

Signal to D7

Step 3: EEPROM Using;

You will see 2 different code in data. What should you do?

1. Firstly you should upload the ''rfid_setup'' code,
2. Open the serial monitor
3. You have to show 2 different idcards in 2 different times
4. If you done this work, you can upload the second code to your Arduino
5. Finally you can use your device.

Step 4: Code Download Link:

You can download the arduino code from this link;

>>> Download Now! <<<

If you didn't read the last step please read!

Step 5: Test;

Please watch the video.

If you like my project please subscribe my YouTube ChannelSUBSCRIBE NOW!

Please follow me on Instructables for more useful projects!.:)

Comments

[AvishK3]

i tried everything but it is not working with my relay i have an

5v Relay Module for Arduino ARM PIC AVR MCU 5V Indicator Light LED 1 Channel Relay Module please help

[borsikmark]

the relay is not in the code

[AlexR393]

Hello, I am Trying to use this code for my dissertation. I get the first code to notice my card and fob and I receive 2 ID numbers for these. But when it tells me to upload the working code it say's exit status 1

'kart1' was not declared in this scope

and shows an error

Please could you help

[borsikmark]

here is the working code:


/****************************************************************
* THIS PROJECT BELONG TO ENSAR LEVENT.
* YOU CAN GET OTHER PROJECTS FROM INSTRUCTABLES
* https://www.instructables.com/member/ensarlevent/...
Tested with SparkFun Arduino Nano
****************************************************************/
#include
#include
#include
const int buttonPin = 7;
int buttonState = 0;
#define RST_PIN 9
#define SS_PIN 10
MFRC522 mfrc522(SS_PIN, RST_PIN);
String lastRfid = "";
String card1 = "";
String card2 = "";
MFRC522::MIFARE_Key key;
void setup()
{
pinMode(buttonPin, INPUT);
buttonState = digitalRead(buttonPin);
Serial.begin(9600);
SPI.begin();
mfrc522.PCD_Init();
Serial.println("RFID Card Reader");
Serial.println("--------------------------");
Serial.println();
readEEPROM();
}
void loop()
{
if ( ! mfrc522.PICC_IsNewCardPresent())
{
return;
}
if ( ! mfrc522.PICC_ReadCardSerial())
{
return;
}
String rfid = "";
for (byte i = 0; i < mfrc522.uid.size; i++)
{
rfid += mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ";
rfid += String(mfrc522.uid.uidByte[i], HEX);
}
rfid.trim();
rfid.toUpperCase();
if (rfid == lastRfid)
return;
lastRfid = rfid;
Serial.print("Card 1: ");
Serial.println(card1);
Serial.print("Card 2: ");
Serial.println(card2);
Serial.print("Now: ");
Serial.println(rfid);
Serial.println();
if (rfid == card1)
{
Serial.println("Turned On.");
delay (2000);
}
if (rfid == card2)
{
Serial.println("Turned Off");
delay (2000);
}
Serial.println();
delay(200);
}
void readEEPROM()
{
for (int i = 0 ; i < 4 ; i++)
{
card1 += EEPROM.read(i) < 0x10 ? " 0" : " ";
card1 += String(EEPROM.read(i), HEX);
}
for (int i = 4 ; i < 8 ; i++)
{
card2 += EEPROM.read(i) < 0x10 ? " 0" : " ";
card2 += String(EEPROM.read(i), HEX);
}
card1.trim();
card1.toUpperCase();
card2.trim();
card2.toUpperCase();
}

[Pagework]

Where you find It has (kart1) and (kart2) just change the code .

Change ...

Serial.println(kart1);

Serial.println(kart2);

To ...

Serial.println(card1);

Serial.println(card2);

[Jupipupi123]

How did you connected that led to the relay ?

[Jupipupi123]

Please my relay is not turning on when i put the card on the receiver

[AvishK3]

it is not working with my relay please help