Design and Implementation of a Smart Door Lock Based on STM32

With the continuous improvement of people's living standards in recent years, home intelligence has become a trend. However, traditional locks are easier to pry open or forcibly open due to their structure, resulting in lower security. Additionally, issues such as losing keys or being unable to unlock the door without them often occur. For the sake of security and convenience, this paper designs a smart door lock based on STM32 that integrates various unlocking methods, including RFID unlocking, fingerprint recognition, keypad unlocking, and remote unlocking. Moreover, if someone forcefully strikes the door, an alarm function will be triggered, making it more secure and reliable than traditional mechanical locks and general smart locks.