Automatic Door Lock Using Microcontroller

Home security is one of the common worries for anyone to have. Certainly, it is necessary to ensure the security of house from whether a thief or other crimes. One of the ways to ensure the security of house is by locking the door with a key. On one hand, key is one of the oldest forms of security, there are already various shapes and kinds of keys. On the other hand, key is not the most practical usage of security, either the person brings the key together with them or leave it somewhere else only they can know. This can be a problem if somehow, they lost the key or if the key got stolen. This can be solved with a help of technology like automation. This article is about designing an automatic door lock with a microcontroller called ESP32. This door lock can help locking the house door automatically by a simple click on your smartphone. It works by controlling the movement of the key when you want to whether locking or open the door by using a servo motor that are also controlled with a microcontroller thru a smartphone. The automatic door lock can be used as solution for home security and is more practical because you no longer need to carry a key.