On the country plot thieves got into the habit of climbing? Or the neighboring guys strive to rob your apple trees or trample the beds, and there is no way to get a dog, then you just need an alarm. Buying a new one at retail outlets is very expensive, but making it primitive, but effective yourself is quite simple, from improvised materials.
How to make an alarm out of the ordinary do it yourself look at the video
To create an alarm we need:
- wooden clothespin;
- battery;
- the wire;
- nylon threads
- button;
- soldering iron;
- electronic match;
- awl.
A wooden clothespin must be disassembled into two parts.
To the half that remained with the spring, we attach a finger battery to the flat side. You need to attach so that the plus batteries are on the nose of the piece of wood.
You can fix it with a nylon thread, making several turns in two places of the clothespin half.
We take the tip of one wire and wrap a pushpin on the needle. After that, we hammer it into a piece of wood to the stop in the direction where the “+” is located at the battery.
And immediately solder the wire from this button to the plus of the battery.
Solder the second wire with one end to the minus of the battery.
After that, we take an electronic match or any other electronic device that will respond to changes in battery voltage (speaker, flashlight, etc.).
We wind one end of the wire onto the tip of the push pin and hammer it into the second half of the clothespin.
Putting our clothespin.
We also need another half of the clothespin without a spring. We make a small hole in her tail with an awl and thread a nylon thread.
The alarm-extension is ready.
Principle of operation.
First of all, the created structure is installed using a nail, which is driven into the surface through a clothespin spring. We insert the free part of the clothespin between the ends of the assembled clothespins and clamp. We tie the free end of the thread to a fixed support (door or tree).
After that, we connect together the free ends of the wires.
If you pull the thread, the piece of wood will fly out of the clothespin, the contacts will close and a closure will occur. And right away you can see that someone has entered your protected area.