Security is a major concern in our day to day life, and digital locks have become an important part of these security systems. There are many types of security systems available to secure our place. In this project, I have built a Secret Knock Detecting Door Lock using Arduino which can detect the pattern of your knocks at the door and will only open the lock if the knocking pattern matches with the correct pattern.
Working of Knock based Smart Lock Project is simple. First we have to save a pattern in the system. So we have to press and hold push button until we knock 6 times. Here in this project, I have used 6 knocks but the user may change it as they want.