The Basic requirement of security can be achieved by designing electrical or mechanical locks that are desligned with one or a few keys, but for locking a big area many locks are required. Basically ...

So, in this project, I have built an Arduino Keypad Door Lock which can be mounted to any of your existing doors to secure them with a digital password. Previously, we have also built other ...

This is followed by a 3-second delay, during which the system locks the door and updates the display. User Interaction The door can be manually locked using the # key on the keypad, prompting a "Door ...