1. Arduino (any Arduino will do). 2. Keypad (it can be 4x4 or 4x3. I have used a 4x4 keypad). 3. Processing Software. 4. Keypad library Here are the links if you don ...

This project implements a door lock system using RFID cards and a keypad. The system is built on the Arduino platform and uses an RFID reader, a servo motor, a keypad, and an LCD display to provide ...

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

There was a time when people were happy to interact with their computer with a standard keyboard and mouse. But in recent years, we’ve noticed more programmable, custom-designed keyboards with more ...