This project presents a secure, low-cost electronic voting system using Arduino Uno, an R305 fingerprint sensor, a keypad-based button interface, and an LCD display. Voters authenticate via ...

The I2CKeyPad library implements the reading of a 4x4 keypad by means of a PCF8574. Smaller keypads, meaning less columns or rows (4x3) can be read with it too. Since 0.3.2 the library allows a 5x3, ...

This source code is free, provided under the MIT License! Please, do not forget to give credits on your project, this will be appreciated! Free software takes time to make, we love to do, but we also ...

Engineers are always in search of new electrical project ideas, and finding meaningful projects makes that search worthwhile. Listed below are the latest electrical projects for engineering students.

Abstract: This project is created to fulfil only one purpose that is to create an authentication system based on biometrics, the most common type of biometrics is fingerprint. It is designed to reduce ...

A 4x4 membrane keypad is a compact and a cost-effective input device that is commonly used in a variety of electronics projects. It consists of 16 buttons arranged in a 4x4 grid and is covered with a ...

Often times, we need to secure a room at our home or office (perhaps a secret dexter’s laboratory) so that no one can access the room without our permission and ensure protection against theft or loss ...

Compared to the computer interfaces of today, the display keyboard used by the Apollo astronauts aboard their spacecraft might look quaint — until you recall that it was central to flying to the first ...