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RFID Reader for 125KHz EM4100 Tags

RFID Reader for 125KHz EM4100 Tags
RFID Reader for 125KHz EM4100 Tags RFID Reader for 125KHz EM4100 Tags RFID Reader for 125KHz EM4100 Tags RFID Reader for 125KHz EM4100 Tags
SKU SKU17781  
Weight 10.00 grams
 
Our price: Rs643.10 ($13.40)
including IGST 18% ( Rs98.10 )
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Market price: Rs660.80
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RFID Reader Module

RFID Reader PIN Out

RFID is a great technology, has may uses and become very low cost and easy to implement these days. Interesting and useful project can be made by using RFID technology.

In RFID or Radio Frequency Identification their is a tag (or label) which has a unique ID stored on it. We can read this ID by using a RFID reader. Not much fun yet? Well the features which makes magical are :-

  • The RFID tag does not need to make any electrical contact with reader (Wow!)
  • The RFID Tag is an active device which has a chip and antenna but does NOT need any power and are low cost!
  • RFID tags are very small, don’t need battery so can be put in cards (looks like a credit/ATM cards) or key chains.

By reading the features offered by RDIF technologies you may be wondering that the application would be much sophisticated or costly. But the good news is that we have done enough research to find the best RFID solution. And with the help of our beginner friendly tutorials you can easily get it to work in no time.

RFID Example

For example RFID may be used to identify a person in a secure access system as shown below.

RFID security system

RFID Security System

As soon as a RFID Tag (Which may be a card or a key chain) is brought near the system, it recognize the person and grant access.

rfid security system

RFID Security System

The great thing is that you don’t have to open your wallet and bring out the card (as you do for credit or ATM cards), just bring out the wallet and bring it near the system that’s it!

UART Based Plug and Play RFID Reader.

In order to read any RFID tag you need a RFID Reader. It is a complete module with Antenna and Logic Chip (which handles everything). The module does everything and sends the final decoded card number (in HEX format) via UART. As you may know UART is a hardware which sends and receive data in a protocol called RS-232. RS232 is the simplest serial protocol. It is so common that nearly all MCU supports RS232 via one or more USARTs(also called UART).

UART Communication involves just 2 data lines. One of them is called RxD (Receiving Data) and Another is called TxD (Transmitting Data). One more line called "common" is also necessary between two isolated systems. Normally GND is kept common between all devices and modules. Since RFID Reader Module only sends data and does not receive any data, only Tx line from RFID is used.

rfid mcu interface

Typical Interface between MCU and RFID Reader

In the above diagram please note the following facts.

  • Microcontroller board is powered from an external source like DC adapter or battery.
  • Microcontroller board has 5v regulator built in.
  • 5v Output is available from above regulator.
  • The 5v out is feed to the RFID reader which powers the module.
  • Tx line from RFID reader is feed to the Rx line of MCU.
  • Tx line of MCU and Rx line of RFID Reader are unused.

Tutorials and Source Code

READ THIS CAREFULLY BEFORE PURCHASE

Please note that these modules requires a lots of work on users part to get it to working.

  • Also user should have thorough knowledge of electronics, programming and debugging.
  • They are NOT complete product, but just a part which depends on other parts and software form the user.
  • IT IS BECAUSE OF THESE REASONS WE DO NOT PROVIDE ANY KIND OF GUARANTEE, WARRANTY, RETURNS, REFUND OR PROBLEM SOLVING SUPPORT ON THESE PRODUCTS.
  • THE PRICE WE COLLECT IS OF THE HARDWARE ONLY. SO DO NOT EXPECT ANY KIND OF CONSULTANCY SERVICES ALONG WITH IT.
  • WE WILL SHIP THE PRODUCT ONLY IF YOU AGREE TO ABOVE TERMS.

BUT EACH MODULE IS THROUGHLY INSPECTED, TESTED AND WELL PACKED BEFORE DISPATCH.

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