Arduino sketch for NodeMCU (ESP8266) and RFID-RC522 reader, POSTing identified cards to arbitrary POST endpoint via WiFi. Configurable via serial connection. May be used, for example, with FHEM to ...

This is a proof of concept for connected office furniture featuring one RFID RC522 module connected to a Arduino Nano ESP32 getting commands from a RFID card and broadcasting the command through Wi-Fi ...

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 ...

Therefore, an effort was made to design a tool for “identification of impedance changes in metals using an Arduino Uno-based RFID RC522” which is relatively inexpensive and easy to carry.

If you can dream it, Arduino can help you build it -- perhaps with a dash of MakerBot thrown in for good measure. The latest homebrew project to hit the ol' inbox sounds an alarm whenever you ...