Today's society is simply unthinkable without burglar alarms. Now there are many people who install branded alarms from intruders in their home or in another room. But not everyone can afford it, and therefore society is beginning to find cheaper options. And now I will tell you and show you how to make an alarm do it yourself. It is easy to make it with your own hands, and it will cost us a penny.
We will need:
- bar
- motor
- wires
- pin
- self-tapping screw
- glue
- crown
- battery
- bells for fishing
- a nail
- fishing line
Step 1: First, we need to make a basis for our signaling. To do this, take a small piece and clean it with sandpaper.
Step 2: Then we take one clothespin and screw into it two screws, as shown in the photo.
Step 3: Now we need to cut the neck off the plastic bottle and fix the motor with glue in it. Next, glue our billet in the center on a block.
Step 4: Next, take the battery and glue it on the bar. Then we glue the bells for fishing on it. And glue the clothespin, as shown in the video.
Step 5: Take a nail, and with glue, glue it to the nozzle from the motor.
Step 6: Then solder the wires according to the scheme:
Step 7: Now you need to make a small card so that it closes the contacts. And we attach a fishing line or rope to the card.
And here is our alarm - the stretch is ready!
Of course, such an alarm system will not be able to call the police to the place of the robbery, but she, hopefully, she can scare with her sound.
Test:
[media = https: //www.youtube.com/watch? v = s2vMNIAhZXI]