Arduino UNO/Nano/Mega operates at 5V logic. However, the MFRC522 works at 3.3V logic level, and is not 5V tolerant. If using one of these microprocessors: The solution to both a.) and b.) is trivially ...

In this tutorial we are going to design a system to read the ID of RFID cards. RFID stands for Radio Frequency Identification. Each card has a unique ID embedded in it. These systems have many ...

Abstract: The concept of Smart Trolley improves the shopping experience by automating various processes by using RFID or Radio Frequency Identification technology. It comprises RFID tags for the items ...

The RDM630 and the RDM6300 are two different types of RFID readers, but are easily confused. They have nothing else in common, not even manufacturer or relationship, for example one is not a successor ...

This automatic liquid dispenser is based on an RFID reader and Arduino. Whenever you want to fill a water bottle or can, or petrol in a vehicle, or any other liquid for that matter, you just need to ...

You have seen RFID Door Lock Mechanism in some Hotels and other places, where you don’t need a key to unlock the room. You are given a card and you just need to put ...

The use of Radio Frequency IDentification (RFID) technologies is growing. Many different applications are implemented in various sectors, and used for very different purposes. RFID enables wireless ...

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

[Matt] has mixed up a batch of two RFID reading door lock systems. While the “door lock” part of the setup has yet to come into existence, the “RFID reading” section is up and running. By using the ...