Knock knock door lock system using Arduino

In this video, I've shown how to make knock knock door lock system using Arduino.
Part 1:
• How to make an automat...
Part 2:
• Part 2: Upgrading my m...
Required Components:
Arduino NANO
LED
Potentiometer 10K
16x2 LCD Display
Home made Door Model
Arduino code link:
drive.google.com/drive/folder...
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user name: digital.debajyoti
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[@xmenken1]

Open sesame! It gives me concept how automatic doors open and close.

[@projectchallenger5229]

what ohm value for the speaker

[@scriptdevvs]

Didn't know that you can do that