necessity of having max 232 on rfid side

[anshul.tikale@gmail.com]

is it necessary to have max 232 ic on rfid side?
if yes then how to interface it with atmega 16 to display it on lcd

 

[bigdogguru]

It largely depends on the specific RFID reader.

What is the model number of the RFID reader you are utilizing in your design?

Can you post a link or upload the datasheet?


BigDog

 

[anshul.tikale@gmail.com]

im using em 18 rfid module

 

[bigdogguru]

According to the datasheet output is either TTL UART or Wiegand Protocol, therefore no MAX232 transceiver is required.

The following tutorial demonstrates how to connect the EM-18 to an Arduino:



To an ATMega16:




BigDog

 

[anshul.tikale@gmail.com]

thanks
I habe bought the em18 rfid reader module which has max 232 on the module
so is it necessary to use another max232 to interface with with atmega 16

 

[ghoola]

what the forum is this no one helps no one:evil::-?:-(