Blocking or non-blocking read; Supports any number of rows and columns; User defined key mapping; prevents reading the same event twice. A matrix keypad will have some pins or wires that you have to ...

Abstract: This paper presents SafeEntry, an intelligent door lock system combining biometric fingerprint authentication, passcode entry, and real-time camera monitoring. The system employs an Arduino ...

Although this firmware is made for the aforementioned PCB, it can be used for different kinds of (hall effect or not) keypad/keyboard projects due to it's support of both digital and hall effect ...

Abstract: This paper presents an automated robotic arm designed for sorting of objects into metals and non-metal base on their weight. The system is controlled by an FX3U-32M PLC and an Arduino Mega ...

After Qualcomm’s purchase of Arduino it has left many wondering what market its new Uno Q board is trying to target. Taking the ongoing RAM-pocalypse as inspiration, [Bringus Studios] made a tongue-in ...

A standard telephone keypad, with four rows of three keys each. The top row consists of 1, 2, and 3, with keys continuing down in order until the last row, which is usually *, 0, and #. Such a keypad ...

[Jean-Christophe Rona] found himself with some free time and decided to finish a project he started two years ago, reverse engineering cheap 433MHz home automation equipment. He hopes to control his ...

Keypad phones, believe it or not, are still in use, and there is a surprising amount of variety to choose from. Some of the phones include 4G connectivity, cameras, and are built to last. If you're ...