Making a universal remote control from a smartphone

We decided to devote this review to the manufacture of a remote control with our own hands.


Start, as always, by watching the author’s video



We will need:
- heat shrink;
- smartphone;
- 3.5 mm mini-jack;
- 2 infrared diodes;
- sandpaper;
- flux;
- solder;
- soldering iron.

First of all, with the help of sandpaper, it is necessary to grind the sides of the infrared diodes.

Now, using superglue, we glue the diodes together.

Next, bend the legs of the LEDs, cut off the excess and solder so that the anode from one LED is soldered to the cathode from the second and in reverse order.

Next, solder the infrared diodes to the left and right channels. According to the author of the idea, the polarity in this case does not matter, since we have already soldered the anodes and cathodes together.

Finally, we put the heat shrink on the mini-jack, isolating the soldered places.

Our device is ready. To work, you need to insert it into the headphone jack on your smartphone, download the remote control application from the official store.