Parallax 28140 RFID with Arduino detecting Specific TAG ID

This video demonstrates use of a Parallax 28140 RFID module with an Arduino development board to Detect a Specific Tag and controlling a RGB LED. In my example the keychain RFID turns the LED Green, and all other or no tag present outputs red LED. The String Compare strcmp () function was used for the task of finding a specific TAG. The embedded Arduino code is based on C/C++. Memory management is relative working with any micro-controller but I did not run into memory issues even with the 2kB available in the ATmega328. The RFID module energizes the tags with radio frequency, and the tags report the ID. RFID Tags do not require a batteries and use the RF energy from the module as the power source. This module transmits the the RFID of the tag over the serial port and is received by m

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