Doorbell from an old mobile phone

Old push-button mobile phones are long outdated and almost out of use. However, there are many ways to give such a phone a second “life” rather than sending it to scrap or a landfill. Today we will consider one of these ways to put this miracle of the 90s into action. Recently they brought me a whole package of old and broken phones. For parts. In this pile there were also modern smartphones with dead batteries, drowned and broken, and there were also completely working push-button phones, which they decided to get rid of only because of their unpresentable appearance today. And just at almost the same time, my doorbell, which I had assembled with my own hands and served flawlessly for many years, “cracked up.” This circumstance prompted me to think; why not repurpose an old work phone to replace your front doorbell.And then - there are more advantages from such a call than from a regular one: in addition to the pleasure of assembling and then using something made with your own hands, you can put sounds and melodies on the signal as you wish, the volume can be adjusted, and so on... By choosing a push-button telephone with a music player and powerful speakers, I got to work.
Doorbell from an old mobile phone

Will need


  • Push-button telephone with mp3 player.
  • Soldering iron (with flux and solder).
  • Copper wires.
  • Screwdrivers (flat and Phillips).
  • Secondary glue.
  • Insulation (insulating tape or thermal tubes).
  • Stationery knife.
  • Scissors.

Making a doorbell from an old cell phone


So, let's disassemble the phone. We take out the battery, unscrew the screws (if any), and use a flat-head screwdriver to remove all the parts fastened with latches.
Doorbell from an old mobile phone

Doorbell from an old mobile phone

Now we find the “play/pause” button in the place where the player control panel was, and disassemble the button so that it does not interfere with the future soldering of thin wires to its contacts.
Doorbell from an old mobile phone

Doorbell from an old mobile phone

Solder to the wiring contacts.
Doorbell from an old mobile phone

It is necessary to immediately grab them with a second glue to the base (to the microcircuit) so that they do not fall off in the future, because the contacts are small and, accordingly, the soldering area is too. The work is quite intricate and painstaking, but that makes it all the more interesting! By the way; If your phone did not have separate player buttons, you can use the “OK” button. If everything went well, we put everything back together. We install all the components and the housing in place, not forgetting to bring out the soldered wires.
Doorbell from an old mobile phone

Now turn on the phone. We load any sound you need onto the signal (for example, I put a bird). Select the player from the menu.
Doorbell from an old mobile phone

Doorbell from an old mobile phone

Don’t forget to turn off the melody repeat (if you had it turned on), otherwise when you press the call button, it will play it until the battery runs out, or someone turns it off.
Doorbell from an old mobile phone

Next, you need to find some kind of contactor (button) for the wires brought out from the player.
Doorbell from an old mobile phone

You will also need a double wire of the required length - from the button, which will be outside, to the telephone located at home. My problem with the button resolved itself: I just used the old one from an old broken bell.
Doorbell from an old mobile phone

So, we pull the wire from the call button to the phone, connect it to the contacts of the player protruding from the phone, and isolate it.
Doorbell from an old mobile phone

Doorbell from an old mobile phone

Doorbell from an old mobile phone

We install it so that it does not fall. That's all. Ready. You can use it.

Watch the video


In the video you can clearly see how this call works, so to speak, in real conditions.
come back
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Comments (11)
  1. mike
    #1 mike Guests 16 August 2018 17:55
    10
    Rave. Once I pressed the melody started, the second time there was a pause. Charge every day?
  2. Guest Sergey
    #2 Guest Sergey Guests 16 August 2018 21:13
    5
    But what about the power supply? The battery in the phone will last a couple of days at most. And then what?
  3. Guest Victor
    #3 Guest Victor Guests 16 August 2018 23:18
    6
    The idea is certainly interesting. But why? It’s better to write a number instead of a call button, or make it wireless. But in the 90s there were different phones, about a kilogram and a half heavier than the one in the photo.
  4. Carlson
    #4 Carlson Guests 18 August 2018 14:31
    4
    Full collective farm...
  5. Black_Flam4ek
    #5 Black_Flam4ek Guests August 19, 2018 01:27
    3
    Oh my old favorite Nokia x2
  6. Don Khuan
    #6 Don Khuan Guests 20 August 2018 22:29
    2
    Complete idiocy, there is a better option to buy a Chinese radio-controlled bell, plug it into a socket and attach the button to the door or gate and no problems, besides, some already have autonomous power supply in the device itself in case of a power outage.
  7. Guest VALERY
    #7 Guest VALERY Guests 20 August 2018 22:57
    16
    the person decided to spend his time usefully, well done. Technical creativity is an exercise for the brain. He likes to do it crafts , and as for nonsense - it’s nonsense when a person can only criticize, but he himself cannot do anything.
    1. Vladimir Noskov
      #8 Vladimir Noskov Guests 7 September 2018 19:50
      0
      Those. creativity is good! It is necessary to highlight the idea in simple inventions. There is no need to describe it in detail.
  8. Guest Alexey
    #9 Guest Alexey Guests 21 August 2018 13:21
    2
    About 10 years ago I did another option: Wiring from the call button to the call button on an old mobile phone. You put in a SIM card, add everyone you need to the white list and voila, when you press the button, your phone rings... the main thing is not to pick up the phone, then the call is free, or you can talk to the person who came, but for money)) and turn it on for charging (forever)
  9. Vitaly
    #10 Vitaly Guests 31 August 2018 16:50
    7
    Valery, soldering two wires is not technical creativity and not exercise for the mind.Exercise for the mind is to do a practical and effective thing, to find an elegant solution without forgetting the aesthetic side of the issue.
    Here people are right - not effective, not thoughtful, not convenient. In general, a collective farm.
  10. Den
    #11 Den Guests 7 September 2018 10:20
    2
    Ruined a good phone. I thought it would be something like a remote call, but then drag the wire to it... some kind of nonsense.