Perancangan Sistem Pengunci Otomatis Berbasis Mikrokontroler Arduino Dengan Integrasi Keypad dan LCD

Abstract

The development of an automatic locking system based on an Arduino microcontroller offers a modern  solution  to  enhance  security  and  access  efficiency  in  various  environments,  such  as  homes, offices, or public facilities. This system integrates a keypad as an input device for access codes and an LCD  as  a  display  medium  for  user  information.  Using  Arduino  as  the  core  controller,  the  system processes input from the keypad and provides visual feedback by displaying the lock status on the LCD. Additionally, the automatic locking feature enables the device to secure the door independently after a certain period, reducing the risk of user negligence. This study aims to design and implement a system that is simple, efficient, and user-friendly, focusing on security and practicality aspects. Testing results demonstrate that the system functions effectively, with high accuracy in code verification and resilience against unauthorized access attempts.