Introduction: When it comes to home security, having a robust and customizable door lock system is essential. In this comprehensive guide, we will walk you through the step-by-step process of building an Arduino-based door lock system that incorporates a solenoid, LCD display, and 8x8 keypad. By the end, you'll have a sophisticated door lock that provides advanced security features and convenient access control. Note : Sometimes it may be hard to visualise the content discussed here.so we highly recommend you to watch the Youtube video to get full understanding. Arduino door lock in Tamil - Arduino door lock in English - Materials Needed: To get started, gather the following materials: Arduino Nano Click here to buy Zero PCB board Click here to buy Solenoid lock Click here to buy Buck boost converter ( XL6009 DC- DC Adjustable Step UP Boost Power Converter Module ) Click here to buy Soldering kit Click here to buy Relay module Click here to buy LCD display module ( 1