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Simple alarm from a mobile phone

If you have an old mobile phone lying on the buttons at home, do not rush to throw it away. In this article I will describe how you can make a mobile alarm from an old push-button mobile phone.

How to start manufacturing?

First we need to set up the phone itself. In the phone settings, turn off all sorts of sounds and lights. Turning off the phone’s auto-lock, and on the button 2 we hang up the speed dial number.
Simple signaling from a mobile phone
To build our mechanism we need the usual things that are in every home. Materials: 1. The nail - it should be slightly longer than the phone itself, about 1.5 cm. 2. Mounting dowel - into which there is no backlash but nail easily enters. 3. Spring spring - about 1.5 cm long. 4. Office Stationery - To hold a speed dial button. 5. Clothespin - from it we will make a nail lift. 6.And of course, the mobile phone itself.
Simple signaling from a mobile phone

Assembly instructions for signaling

1. First of all we cut the dowel into three parts. The first part - cut off the cap from the dowel approximately 1 cm long. The second part - cut off the part of the dowel approximately 2-2.5 cm long. The third part - cut off the part of dowel about 0.5 cm long.
Simple alarm from a mobile phone
2. We are cleaning the nail of irregularities and chipping with a regular file, so that it would easily slide inside the cut parts from the dowel.
Simple alarm from a mobile phone
3. We glue the parts of the dowel to the phone, for convenience we use the same nail in order to glue them in one direction. I also used hot glue for convenience as it quickly glues and dries, but you can use other suitable glue.
  • We stick the smallest part on the button.
  • We glue the largest part at the top of the phone above the screen, using a nail, direct and glue both parts along the same axis.
Simple alarm from a mobile phone
4.We put a hat on the nail from the dowel, and then release a spring, grease with a drop of mechanical oil and drive the nail into the stuck parts of the dowel on the phone. In this way, we have a primitive button that will play the main role of signaling.
Simple signaling from a mobile phone
5. We cut off the tip from the clothespin and wipe the lifting path in the middle of the file with a nail.
Simple alarm from a mobile phone
6. We glue this lift at the very bottom of the phone under the “0” button so that the tip of the nail barely touches the lift and is aimed at the lifting path. 7. We wind the stationery gum on the phone and nail 4-5 turns opposite the button “2” so that it (the button “2”) is constantly pressed.

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