Introduction:

I am a person who always forgets things, including my computer's passwords. This Arduino project is to help people who have a long, lengthy password and cannot remember it (anyone?). The solution is RFID TAG. Only need an Arduino micro and an RFID sensor card/ chip to unlock the computer password.

This project is originated from: https://www.instructables.com/Arduino-RFID-Unlock-...

Improvement:

Although this project looks similar to the original one, it still has slightly different. First, the chips are replaced as cards, which are more easily to get as well. Second, the original project used Arduino Uno to contribute to the project, however, it can be done by only using Arduino Leonardo after reform.

Materials:

* Arduino breadboard

*Arduino Leonardo micro

*RFID - RC522

*RFID card

*7 wires

*USB cable

Step 1: Step 1: Hardware

Connection:

3.3V of Arduino to VCC of RFID

GND of Arduino to GND of RFID

PIN 10 of Arduino to SDA of RFID

PIN 9 of Arduino to RESET of RFID

MOSI of Arduino to MOSI of RFID

MISO of Arduino to MISO of RFID

SCK of Arduino to SCK of RFID

Step 2: Step 2: Software

After setting up the circuit, download the RFID.h libraries and import them into Arduino before type in the code. Without the libraries, it would be difficult to upload the code successfully.

Download libraries: https://github.com/song940/RFID-RC522

My code: https://create.arduino.cc/projecthub/najad/lock-un...

Remember to test the card number to match your own card. Scan your card as your computer key and note down the number that is printed in the serial monitor and replace that number in the code.

Also, and most important, remember to update your passwords in the code.

Step 3: Final Video

After trying through codes and note down the right card number, you will never forget your computer passwords ever again once you held the card in your hand. Thank you so much and hope you like it.