The main principle of this circuit is that the door lock opens only when the buttons in series are pressed at a time. We can use it to lock the doors and for other security purposes. This article ...

The electronic code lock described is straightforward to build and may be used for a multitude of purposes. All components used are readily available from most electronics retailers. The code consists ...

Objective: To develop an FPGA-driven electronic locking system that enables secure authentication through a numerical password. The system should offer a user operation mode for entering the password ...

Electronic code lock with multiple user ID and password system using 8051 microcontroller, which provides control to unlock the lock or door. It uses embedded system with input from the keypad and the ...

LS7220 is a digital code lock system from LSI Computer System and its dificult to find in many places. LS7220 is a digital code lock system from LSI Computer System and its dificult to find in many ...

The circuit described here is an electronic combination Security Code Lock. It opens only when you press four keys in the correct sequence (referred to as a code) out of a total of eight keys ...

Abstract: People's quality of life needs to be improved, and the anti-theft risk needs to be paid more attention. Therefore, a simple electronic lock is becoming more and more important. The system ...

A digital lock using WebSerial leverages modern microcontroller technology to create a secure and convenient access control system. This setup typically involves an ESP32 microcontroller, which hosts ...

The Yale Code is a new electronic lock that borrows many features from smart locks like the Assure Lock 2, yet it isn’t technically a smart lock. It lacks support for Google Home, Amazon Alexa, Apple ...