Radio Frequency Identification is widely used in contactless payment cards, National Highway Tollgate systems, and in security passes. By integrating an RFID reader with an Arduino, you will be able ...

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 ...

This is an example code written to showcase the usage of RF Module and WiFi to control a relay to lock and unlock a door. The ESP32 Dev Board is connected to a 433MHz RF Reciever and a Relay. You can ...