RFID NFC Modules
RFID (Radio Frequency Identification) is a technology that uses electromagnetic fields to identify objects in a contactless way; it is also called proximity identification. There are 2 elements in RFID communications: the RFID module (or reader/writer device)
and an RFID card (or tag). The RFID module acts as the master and the card acts as the slave; this means the module queries the card and sends instructions to it. In a normal RFID communication, the RFID NFC Modules
module is fixed and the user takes his card near it when he needs to start the interaction.
1 x Arduino UNO
1 x Communication Shield
1 x RFID 13.56 MHz / NFC Module for Arduino
1 x Mifare tag (card/keyring/sticker)
1 x USB cable
1 x PC
Cooking Hacks offers Mifare® Classic 1k cards tags, stickers and key rings along with the RFID/NFC module for Arduino. A Mifare® Classic 1k tag has 1024 bytes of internal storage capacity, divided into 16 sectors. Each sector is composed of 4 blocks, and each block is composed of 16 bytes. That is to say, each card has 64 blocks, from number 0 to 63. Blocks number 3, 7, 11 is called the sector trailer. This block stores the 2 keys or passwords and controls the access to the rest of the blocks in the sector.