Smart Home Smart Door Micro:bit is a smart door system that uses the BBC micro:bit as the main controller. This system is designed to improve home security using automatic technology. The door can be opened using a password, sensor, card, or Bluetooth without using a regular key. The micro:bit controls components such as a servo motor, buzzer, LED, and sensors to make the security system work automatically. This system is part of the smart home concept because it uses digital technology to make homes safer, more modern, and more practical. Smart Door Micro:bit is also commonly used as a learning project for coding and electronics because it is easy to program using block coding or Python.