Radio frequency Identification (RFID) is a wireless identification technology that uses radio waves to identify the presence of RFID tags. We need to bring the RFID tags near to the reader to read the unique identifier number associated with that RFID tag as it has a microchip with radio antenna mou..
The EM18 RFID Reader Module is based
on the EM18 RFID Reader Chip. The module can read the unique ID number
from RFID Cards and Tags that operate on 125kHz. The read value is then
sent as TTL output so that it can be easily read by a microcontroller
like Arduino. It is popularly used in Atte..