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, ...

Photography turntables are made for both the precise and lazy. Whether you are concerned about the precision of consistent angles during a photo shoot or you simply do not want to stand there rotating ...

Abstract: With the increasing attention paid to people's property and life safety and the continuous development of mobile communication technology, the topic of intelligent password locks that are ...

Nowadays, it seems that we cannot do anything without passwords. Experts constantly warn us to be careful about using passwords that can be easily figured out by bad actors, advising us to create long ...

Sharing your Wi-Fi password doesn’t have to be frustrating! If your smartphone runs Android 10 or higher, you can share your Home Wi-Fi password with other people via a QR code on your smartphone.

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 ...

The I2CKeyPad8x8 library implements the reading of a 8x8 keypad by means of a PCF8575. Smaller keypads, meaning less columns or rows (e.g. 5x4) can be read with it too. Feedback as always is welcome.

Abstract: This research paper proposes the Morse code which is the earliest method used in Radio Telegraphy. Because of advanced telecommunication systems it is considered to be an outdated technique.