To begin with, the author took a clothespin, a glue gun and a pair of batteries. And glued the batteries to the clothespin.
Then, with a small drill, he made through holes in the clips of the clothespins.
And twisted one bolt into these holes.
Then he took the speaker (squeaker from the PC), cutting off excess from it.
I cleaned the edges, treated them with solder paste and tin coated them.
He also applied a little paste to the bolts and also tin-coated it.
Then I glued the squeaker to the clothespin.
He soldered the black wire of the tweeter to one of the bolts, and the red wire to the plus of one of the batteries.
Then he took a piece of wire, stripped it on both sides, and again processed it with paste and tin-coated, soldered one edge to the minus of the first battery, and the second to the plus of the second battery.
Then, with another small piece of wire, the author connected the second bolt and plus the second battery.
Then the author, having cut off a piece of cardboard, put a little glue on him and rolled it in half.
Where the author applied glue earlier, he now made a hole and threaded a piece of nylon thread into it.
Fixing with glue.
The alarm is ready, the author only needs to fix it on the door.
He will fix it on hot glue clothespin to the door, and the thread from cardboard to the door frame.
Thank you all for your time. See you.
Video homemade:
[media = https: //www.youtube.com/watch? v = gmWz9oNeEoc]