Jan 27, 2020 · You must use a level converter between the Micro and the MFRC522 (if not already included on the breakout board)! You might damage the MFRC522 if you connect the SPI signals directly to the Micro!

Feb 9, 2025 · PN532 RFID Interfacing with Arduino Pro Micro: The VCC and GND pins of the PN532 RFID module are connected with the Arduino Pro Micro 3.3V and GND pins. While the SCL and SDA pins of the RFID module are connected with the …

Jun 3, 2019 · In this short tutorial, I'd like to explain how to make a simple USB device which allows you to very quickly unlock your computer without a keyboard. You will need only the Pro Micro microcontroller with ATmega32U4 (or Arduino Leonardo with this chip), RFID reader together with card and breadboard.

In this instructable I'll be explaining how to make a simple RFID system that can lock/unlock your windows computer with just a flick of an RFID card/tag. With this system in place no more hassles of unlocking your Laptop/PC every-time you lock it down.

The RC522 module works on a 13.56 MHz frequency and it can act as a reader and write for UID/RFID cards. The RFID cards communicate with the module at a short distance with radio frequency due to the mutual induction technique.

In this tutorial, we are going to learn how to use RFID/NFC with Arduino. The RFID/NFC system includes two components: reader and tag. There are two popular RFID/NFC readers: RC522 and PN532 RFID/NFC reader.

Arduino library for MFRC522 and other RFID RC522 based modules. Read and write different types of Radio-Frequency IDentification (RFID) cards on your Arduino using a RC522 based reader connected via the Serial Peripheral Interface (SPI) interface. For advanced and further development please use library RFID_MFRC522v2.

Jan 27, 2025 · In this tutorial, we will use the I2C mode, as it’s simpler to set up and widely supported. Here’s how to connect the PN532 module to an Arduino Uno in I2C mode: Note: If your module has a mode selection jumper, set it to I2C mode. To simplify the interaction with the PN532 module, install the following libraries: Open the Arduino IDE.

Aug 9, 2017 · It's a handy device that allows the user to copy RFID tags/cards (13.56Mhz only) using RC522 RFID reader module and Arduino Pro Micro. Small DIY guide and additional info is presented in the link below.

Paste into your ide and change the uid.