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RFID & NFC
| 125Khz RFID Mini Module Kits
125Khz RFID Mini Module Kits
RFID frequency identification is a non-contact object recognition technology, it can automatically recognize target and get relevant data through rf signal, so there are so many interactive projects which need to use RFID to achieve object recognition.
125KHz card mini-module is designed for reading code from 125KHz/ 134.2KHz card compatible read-only tags and read/write card . It can be applied in office/home security, personal identification, access control, anti-forgery, interactive toy and production control systems etc.
Parameters :
1、Voltage: 3 - 5V DC
2、Current: <50mA
3、Output format: Baud rate 9600, Data bits 8, stop bit 1
4、Manchester code output:
___ 1; ____
| ___; ___ | 0
5、Reading Distance: key card> 5cm, thin card> 9cm, thick card> 11cm, with no blind spots
6、Operation temperature: 0 ~ 70 degrees Celsius
7、Size: 38mm * 20mm
Pin definition :
1、VCC: +5 V power supply
2、TX: TX output. Baud rate: 9600, Data bits: 8, stop bit: 1
3、PC: TX output to computer serial port. Directly connected to Pin2 of the computer COM.
Note: already embeded with voltage level conversion circuit.
4、L2: antenna
5、L1: antenna
6、GND: GND
7、Mcst: Manchester code output
8、Rest: reset pin, low effective.
9、D1: card available signal. When a card is detected this pin is high. After 6ms, TX outputs data.
Then it becomes low after TX output finished
10、D2: vacant
11、D3: vacant
Product list :
1、RFID reader module x1
2、Coil antenna x1
3、Thick ID card x1
4、Thin ID card x1
5、Key ID card x1
Sample connection :
While it is connected with PC, super terminal might be used :
Click here to get the reference schematic diagram
Click here to get EM4100 Datasheet and Serial port debug software
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