Few people know about this function of the crown battery. A brilliant homemade idea in which the crown battery is used as a key to a lock that no one can open except you. How to make a device with your own hands, with the help of which you can save valuables from intruders. A useful homemade idea that will be useful to many.
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Hi all! My name is Mikhail - I am the author of the Musiy4uk channel. I love coming up with useful crafts for the home and beyond. I like to invent interesting crafts and devices from unnecessary things that are often thrown away. I'm also into electronics, so here are some DIY ideas for radio amateurs. If you also like to make useful crafts with your own hands, or you like DIY-style videos, then subscribe to the channel!
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