টি ভিউ
2:01
Arduino Starter Kit: Knock Lock with piezo
38:45
Sofox tries the Arduino Starter Kit - Chapter 12 - Knock Lock
28:14
Knock Lock Walkthrough: Learn Electronics with Arduino Project 12
2:37
SoFaygo - Knock Knock (Official Music Video)
4:39
Short Project: Knock Knock Lock
0:12
Ardiuno Project 12 - Knock Lock
4:07
Arduino Smart Knock Lock door tutorial
0:26
Project 09: Secret Knock Lock
