» Electronics » Signaling DIY do-it-yourself alarm

DIY Stretch Alarm


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]
5.5
4.5
5.5

Add a comment

    • smilesmilesxaxaokdontknowyahoonea
      bossscratchfoolyesyes-yesaggressivesecret
      sorrydancedance2dance3pardonhelpdrinks
      stopfriendsgoodgoodgoodwhistleswoontongue
      smokeclappingcraydeclarederisivedon-t_mentiondownload
      heatirefullaugh1mdameetingmoskingnegative
      not_ipopcornpunishreadscarescaressearch
      tauntthank_youthisto_clueumnikacuteagree
      badbeeeblack_eyeblum3blushboastboredom
      censoredpleasantrysecret2threatenvictoryyusun_bespectacled
      shokrespektlolprevedwelcomekrutoyya_za
      ya_dobryihelperne_huliganne_othodifludbanclose
5 comments
Quote: To Delusam
t as a "signalization" you need to come up with something modern.

Once collected from an electromechanical alarm clock. The one with a 1.5 volt battery.
Quote: Valery
In theory! ... In practice, something no one crept even once ....


It means that the headquarters were well camouflaged, "enemies" could not be found.
blush
According to the proposed; Of course this is not KNOW_HAU. This notion is already years old, more than me. And the comments were made correctly by Ivan, what are you minus? The knot itself from the clothespin has a place to be, probably. But here as a "signalization" you need to come up with something modern. Good not cans yet. And if you apply it on earth, all cats and possibly dogs will be yours. Each time you will look for your "card" ....
Funny little thing. 5+
In our childhood (The very beginning of the 80s) all clothespins were wooden ...)))). And I made such an alarm to protect the "headquarters". (!!!)))))). : sunglasses: Without screws, of course. Just two buttons stuck into the “lips” of the clothespin, copper wires “pressed” under them, the “crown” was wound with electrical tape to one part of the clothespin, the piece of thick wire that it was stuck into the ground was attached to the structure with tape. Of course, there were no plastic bottles either, but there were bottles made of PVC from detergents. (They still had such a boastful abbreviation "SMS"! (Synthetic detergent!))))). It was from such a bottle that the “tongue” was cut. And in the "headquarters" hung a light bulb. (For standard 3.5 V bulbs, the cartridges were made from a cork from a tube with glue, or toothpaste (which then already gradually replaced tooth powder).
... When the "enemy" was sneaking up to the headquarters, we noticed this and, getting ready, suddenly attacked him !!! .... In theory! ... In practice, no one crept up once .... : satisfied:
Did the author specially choose black self-tapping screws? Both phosphated and oxidized surfaces have high electrical resistance and are poorly soldered.
And stick “Cron” - et-t-that five! ;)

We advise you to read:

Hand it for the smartphone ...