RFID interfacing

[Priyesh]

I want to know, if RFID reader provides TTL output of 5V even then i have to use RS-232 for interfacing? Can we directly connect with the reader module with rx, tx and ground pins?

 

I am making my final year project on RFID based attendance monitoring system in which I am using RFID reader along with LCD, EEPROM, RTC.

I am getting stuck in c-programming. I would be very grateful if someone helps me in providing codes for it.

 

Thanking you in advance.

[dagakshay]

EEPROM interfracing

http://www.engineersgarage.com/microcontroller/8051projects/interface-serial-eeprom-24c02-AT89C51-circuit

 

RFID interfacing

http://www.engineersgarage.com/microcontroller/8051projects/interface-rfid-AT89C51-circuit

http://www.engineersgarage.com/microcontroller/8051projects/interface-rfid-AT89C51-serial-interrupt-circuit

[devika menon]

rf module is ttl compatable..u can directly connect it to microcontroller…no need f any line drivers

[chandrasekhar]

you need to interface another max-232 to your microcontroller.then you can connect the max232 of rfid reader to the max 232 of microcontroller.

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