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.
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.
Solder to the wiring contacts.
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.
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.
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.
Next, you need to find some kind of contactor (button) for the wires brought out from the player.
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.
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.
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.