Monday, 17 August 2020

A mysterious BOOK with secret Knock lock

In this tutorial  i am showing how to build a mysterious book with secret knock lock
Circuit diagram



by -

3 comments:

  1. Unknown9 March 2021 at 08:06

    i need just dat led nd resistr cirvuit.

    ReplyDelete
    Replies
    1. Unknown30 April 2021 at 09:11

      Add 560 ohms resistance and you are good to go

      Delete
    2. Unknown23 August 2021 at 05:51

      For led if u will not add resistance than also it will work

      Delete

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