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 ...

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

A lot of making goes on in this community these days, but sometimes you’ve just gotta do some old fashioned hacking. You might have grabbed an old Speak and Spell that you want to repurpose ...

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 ...