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 ...

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 ...

An automatic toll gate system using Arduino revolutionises traditional toll collection by eliminating manual intervention.

Kickstarter promises Internet connectivity anywhere for tiny computers. Interesting. It beats ripping apart an existing burner cellphone to connect directly to the keypad. I may get one as I can think ...

Arduino Micro has some extra leds that it is tricky to programme. Like almost all Arduinos, has a built-in led – the green one on the left in the photo. And it has a pair of yellow leds – called TX ...

In many residential properties worldwide, gaining access to deliver a package or visit someone involves punching in a gate code, using a physical key or key fob or relying on an audio intercom. These ...