Personal Alarm in a Tin

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Introduction: Personal Alarm in a Tin

About: I like making things and I'm good at breaking things.

My main concern when making this alarm is its ability to disguise as day-to-day products, but not its loudness. Therefore, it will not be suitable for every emergency situations that you might encounter.


The video is unedited. You can't really hear the sound properly because I don't have any pro equipment - only an iPhone. But, with human ears, you can actually hear from thaaaaaaaat far away

Step 1: Gather the Materials

Things you'll need

  • 3V buzzer
  • 3V button battery
  • Button battery holder
  • Switch
  • Eclipse mint tin
  • Drill
  • Solder
  • Soldering iron
  • Scissors
  • Clipper
  • Plier
  • Glue
  • Marker
  • Electrical tape

Step 2: Mark and Drill

Use a marker to mark the holes for the speaker and an opening for the switch. Then use a drill to drill the holes (obviously).

Step 3: Cut and Solder

Half the positive (red) wire attached to the 3v buzzer and solder one of them to the middle leg of the 3-legged switch.

Step 4: Cut and Glue

Since my buzzer has these ears thing and they prevent it from sticking properly, I used a clipper to remove them. Glue the buzzer to the inside of the mint tin and use a plier to pull the red wire through the opening.

Step 5: Solder

Solder the red wire to the side leg of the switch. Then push the switch in place.

Step 6: More Soldering

Solder the battery holder to the wires.

Step 7: Insulate

Insulate the tin with some electrical tape

Step 8: Done!

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    7 Discussions

    0
    ashleyjlong
    ashleyjlong

    4 years ago on Introduction

    Seems like a good idea. I'd love to see video of it in action to know how loud it can get.

    0
    NeroliKo
    NeroliKo

    Reply 4 years ago on Introduction

    I cannot do it right now, but I'll find an opportunity to do a test in the outdoors. Thank you for reminding me!

    0
    ralema69
    ralema69

    4 years ago on Introduction

    That's my comment also, you attached a buzzer, but what kind of actual alarm is it going to make?

    0
    NeroliKo
    NeroliKo

    Reply 4 years ago on Introduction

    I cannot do it right now, but I'll find an opportunity to do a test in the outdoors. Thank you for reminding me!

    0
    Knight Lamune

    Here is a much more useful personal alarm for emergency situations. It makes a loud bang.

    american-derringer2[1].jpg
    0
    NeroliKo
    NeroliKo

    Reply 4 years ago on Introduction

    I forgot to add this in the intro (my fault), but my main focus of this alarm is its ability to disguise as day to day products. It's quite crowded here where I live, so I'm pretty sure people will hear it, especially at night. This of course may not be applicable to everyone - yours would come in handy if you need really loud sound.