Like many pet owners, [Pete] was curious about his little furry friend’s habits while he was gone. He decided to build an RFID tracking system to monitor their positions. This data would then be ...

[Dale Cook] has cats, and as he readily admits, cats are jerks. We’d use stronger language than that, but either way it became a significant impediment to making progress with an RFID-based sensor to ...

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 ...