RFID tags 125 kHz

Products & Technology Grove
#1

Hello guys, i have an issue.



What is the protocol used for these tags ?



Thanks in advance for your response and have a nice day ! :slight_smile:
IMG_20190517_094445.jpg

#2

Hi there,



it is 125Khz, EM4100 standard. thanks.

#3

Thanks Bill, but is there in GitHub a little piece of code that should be able to decode the data frame and collect the Card Number in the Serie Monitor ?

#4

Hi there,



here is the format.For example as below:



Output: 0700952F229F -------------- -Hexadecimal： Start Bit(07) + Card Number(00952F22)+ Checksum(9F)



then you can covert the card number from hex to dec and add start bit as below. thanks.



Card Number ID: 0009776930 ------- Decimal: Start Bit(00 or other) + Card Number(09776930)