Red LED lights up for access denied. Audio feedback with a buzzer for different access responses. LCD Display (16x2) to show user prompts and results. Upload the Arduino code to your board. Connect ...

RFID Module: Reads the UID from an RFID tag/card. If the UID matches the authorized UID, access is granted. This project is open-source and can be freely used for educational purposes. I demonstrate ...

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 ...

digitalRead(LED)); // Turn on or off the onboard led } } } For advanced RFID Arduino troubleshooting ... If you place the wrong RFID card near the RFID reader a buzzer will beep to alert you about the ...

You are given a card and you just need to put it in front of a RFID Reader box ... for the standby red LED the pin 3 remains HIGH until any task performed. If you place the wrong RFID card, the flag ...

By connecting multiple MFRC522 RFID readers to an Arduino ... device you want. The Arduino sketch is also setup to give “hints” to the player by way of a status LED: fast blinking let ...

For someone who’s never worked with an Arduino ... RFID reader module is used to read the RFID tags. To add new keys to the system, [Jason] simply swipes his “master” RFID key. An indicator ...

Patrick explains more about his latest hardware creation and its features : Meet the Arduino Compatible RFID Reader Module ... the blue LED will light up for one second, then turn off.