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 ...

Arduino (Elegoo Mega 2560) LCD & Keypad Calculator Overview A fully functional calculator built using an Elegoo Mega 2560 (Arduino-compatible), a 16x2 LCD, and a 4x4 keypad. This project demonstrates ...

In this video I'll be showing you how you can control the contrast and the back light brightness of a 1602 LCD display with just the Arduino. The contrast is typically adjusted with a variable ...

While searching for new products on AliExpress, I came across the SayoDevice OSU O3C, which looks very similar to other macro ...

A hackerspace is a place that generally needs to be accessed by a wide group of people, often at weird and unusual hours.

Soldered Electronics has made ESP32-based e-paper displays for years, starting with the launch of the Inkplate 6 in 2019. The ...

PIMA high-end LCD keypads are designed for all lines of intrusion alarm systems. PIMA's LCD keypads features user-friendly, modern aesthetic design with soft-touch illuminated keys and audible tone, ...

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 ...

TV and home video editor Ty Pendlebury joined CNET Australia in 2006, and moved to New York City to be a part of CNET in 2011. He tests, reviews and writes about the latest TVs and audio equipment.

If you’ve been to a wedding or a downtown coffee shop in the last 10 years, you’ve probably seen those little lightboxes that are so popular these days. They consist of letters placed ...