The I2C LCD communicates with the Arduino through the I2C protocol. Different Arduino boards have different I2C pins. The I2C pins on Arduino Uno and Arduino Nano are A4, A5. The below table describes ...

When the system starts, it initializes and waits for an RFID card to be scanned. Authorized RFID cards (specified in the code) will grant access and display "ACCESS GRANTED" on the LCD. Unauthorized ...

Learn Arduino RFID programming with hands-on code examples for reading and writing RFID tags, plus authentication protocols. Build practical Arduino RFID projects like LED control systems and access ...

To let its employees socialize from 300 miles away, ad agency Allen & Gerritsen hacked together an interactive game using RFID sensors, an Arduino, and some custom in-house development.

This paper presents the design and implementation of an RFID-GSM based intelligent cart system to automate the retail checkout process and reduce long queues and manual billing inefficiencies. The ...

In an era where homeowners frequently leave for work or education, robust security for residences is imperative. Traditional security measures, including window and door locks, present challenges such ...