RFid Radio Frequency Identification Reader

The RFid Reader is the additional board used to read identification cards (RFid Cards) using radio waves. This additional board features a receiver/transmitter module with antenna. The operation of the RFid Reader board is based on amplitude modulation of radio waves and electromagnetic induction. When the RFid Reader is turned on, a 125 kHz voltage is supplied on its antenna. As a result, the antenna starts emitting an electromagnetic field necessary for reading the RFid identification card.
Important: As passive RFid card doesn’t have its own power supply, it features a coil where the voltage is automatically induced by approaching the card to the RFid Reader’s antenna. This voltage is necessary for the chip featured on the RFid card to work. The memory chip on the RFid card contains a unique identification code.

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This code is sent by the card when it is placed close to the RFid Reader’s antenna. The code is received via this antenna. Then, it is sent to the microcontroller for further processing.The RFid card is not provided with the RFid Reader, but you can buy it separately.
This code is sent by the card when it is placed close to the RFid Reader’s antenna. The code is received via this antenna. Then, it is sent to the microcontroller for further processing. The RFid card is not provided with the RFid Reader, but you can buy it separately.
An RFID (Radio-frequency identification and detection) reader is a device which is used to communicate with RFID tags by receiving and transmitting signals. These signals use radio waves for wireless communication. RFID tag is applied to products, individuals or animals to identify and track them. The identification is done through a unique serial number.

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RFID module basically consists of two parts, namely, a tag and a reader. A typical RFID system consists of an antenna, a transceiver and a transponder (RF tag). The radio frequency is read by the transceiver and the information is transferred to a device for further processing. The information (the unique serial number) to be transmitted is stored in the RF tag or transponder. The transponder contains a chip and an antenna mounted on a substrate. The chip transmits the relevant information through antenna.
Rfid module basically consists of two parts, namely, a tag and a reader. A typical RFID system consists of an antenna, a transceiver and a transponder (RF tag). The radio frequency is read by the transceiver and the information is transferred to a device for further processing. The information (the unique serial number) to be transmitted is stored in the RF tag or transponder.
The transponder contains a chip and an antenna mounted on a substrate. The chip transmits the relevant information through antenna. The antenna also receives the electromagnetic waves sent by the RFID reader. Different RFID tags work on different frequencies. Here low frequency, 125 kHz, RFID tags have been used. These tags work within a range of 10 cm. When an RFID tag comes in this range, the reader detects it and sends a unique code of the tag serially. This serial code, consisting of 12 bytes, is received by the microcontroller.
RFid Pin Details:
1. Vcc Supply Voltage: 5v VDC
2. Gnd Ground(0)V
3. Beep Beep sound or LED Drive
4. Ant NC
5. Ant NC
6. Sel High is RS232
7. RS232 TTL Output Data.
8. D1 Data-1
9. D2 Data-2

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