Note 2:- You may ensure the RFID Reader and RFID Tags are frequency compatible. There are 5 Volts and 9 Volts versions available in the market. The RFID reader I used in this tutorial is a 12 Volts one. Note 1:- Power supply requirement of RFID Readers vary from product to product. You may observe the circuit diagram given below. So here begins our classic tutorial on Interfacing RFID with Arduino.
#Rfid card chip writer serial#
We can collect the read data through these serial pins using arduino or any other micro controller. Every RFID reader comes with Serial output pins. The reader will receive this electromagnetically transferred data and outputs it serially.
![rfid card chip writer rfid card chip writer](https://img.topchinasupplier.com/file/upload/2020/11/28/NFC-Smart-Card-Reader-DC5V-13-56MHz-IC-Copier-NFC-RFID-Chip-Card-Reader-and-Writer.jpg)
This chip will send data electromagnetically to the reader. Now when an RFID tag is shown near the reader, electromagnetic induction will take place between the coils and this powers the chip inside tag. We power the RFID reader from power supply for reading purpose. I told you, both RFID reader and RFID tag comes with a coil in them. You will be wondering how the chip inside RFID tag gets power ? This is made possible via Electromagnetic Induction. When an RFID tag is shown near an RFID Reader, it collects the unique tag data (a combination of digits and characters) from the RFID tag. An RFID reader and an RFID tag, both have a coil surrounding them.
![rfid card chip writer rfid card chip writer](https://ae01.alicdn.com/kf/HTB1kWLRSFXXXXbnXXXXq6xXFXXXX/RFID-EM4305-reader-and-writer-125-134-2KHZ-ISO-11784-85-card-reader-animal-chip-write.jpg)
An RFID reader is used to read RFID tags (which contain certain unique data stored in a chip). This time we are interfacing an RFID Reader which can read RFID Tags to Arduino.
![rfid card chip writer rfid card chip writer](https://image.made-in-china.com/2f0j00CGFRkcuWbnbQ/USB-Contact-IC-Chip-Card-and-Contactless-RFID-NFC-Card-Reader-Writer-ACR1281U-C1-.jpg)
In this tutorial, we are dealing with yet another interfacing technique.