Unique and inimitable accessories for mobile phones and smartphones these days are not surprising. What can not be found and purchased in specialized stores selling accessories. We present to your attention an interesting article in which we will consider how to connect a regular handset to a mobile phone.
In order to connect the handset to a mobile phone, we need the following:
1. tube
2. 3.5mm micro jack
3. soldering iron.
It is advisable to use a tube that will have a wire, but if it is not at hand, then you can freely convert the remote tube. Also note that the jack that we will use to connect must have 4 wires, that is, it must be equipped with a stereo output and a mono input.
Consider the sequence of connecting the wires of the jack and tube. Both elements have 4 wires. However, their direct connection will not give the desired result, since the handset is a mono device and the mobile phone is stereo. The handset also has 2 levels, the first of which is for the microphone, and the second for the speaker. As for the mobile phone, it has 1 level.
Also note that you do not need to worry about the polarity for the microphone and speaker in the case of tube wires. Consider the pinout of the jack wires, or TRRS: the first wire is the left audio channel; the second is right; the third controls the level of the device, and the fourth is responsible for the microphone.
Now consider the wires of the tube: black is the microphone wire, red is the speaker, green is the speaker, yellow is the microphone.
First of all, we need to solder the black and green wires of the tube to the third pin on the mini-jack, that is, to the level of the device.
We connect the red wire to the left audio channel.
We connect the yellow wire to the fourth pin of the jack, that is, to the microphone.
The right audio channel of the jack is left untouched.
Our handset is ready to connect, but before that, we advise you to test everything with a voltmeter.If everything is connected correctly, then you can safely brag about the gadget made by yourself and surprise your friends and acquaintances with it.