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diy bluetooth headphones

by:ROYAL TANIC     2020-03-27
Tired of pulling wires on headphones?
Don\'t you like the feeling of being \"locked\" on your computer?
Then you come to the right place!
This is a quick DIY project.
If you are familiar with the topic, it can be done in less than 2 hours, no more than 1 night for a full newbie.
The main goal is to modify the wired headset to a stereo Bluetooth headset, to be able to fully charge for at least 6 hours and to be able to charge without any complications.
This frustrating activity
I will tell you the reason in a minute)
Minimum tools/materials required, minimum experience with manual tools and soldering iron.
Note: a new version of the wireless headset is available in the following tools: Material: additional material: remove the headset.
In order to modify the wiring, you may need to take it completely apart.
Select a headset that will accommodate all active components including battery and Bluetooth module.
Run a pair of wires through the head.
You may need to drill some holes and fix the wires with some glue.
Luckily I have a nice thick liner on it and everything around it fits well.
If your headphones have hinges, then you really need to avoid guiding the wires by moving the parts.
The best way is to drill a hole in the middle of the \"arm\" and make a matching hole in the headset shell (see pictures).
Use the grinder to make a hole large enough for your power switch.
I use a round switch with a pin, so no glue.
Do the same 3.
5mm jack connector.
Important note: weld two ground wires and one active speaker wire on the active side.
A ground connection will be connected to the second speaker and two other wires-
Bluetooth module.
The other side only needs to be connected to the line in your headset.
You can also assemble and install it (
We finished here).
The first picture shows BLK\'s pinout-MD-SPK-B module.
We will use pins 3, 4, 5 for audio output and pins 12, 13 for power supply.
Weld all pins as shown in Figure 2: pin 3 => speaker ground pin 4 => speaker L activePin 5 => speaker R activePin 12 => power switch (Battery +)
Pin 13 => Battery-
The PCB contacts on this module are very small and there is a good chance that you will have to repeat this part several times.
Make sure the welding points do not overheat as they are easily damaged.
I had to do a bit of recovery after accidentally scraping off the ground connector.
Every soldering operation on the Bluetooth module damages more contacts, so once it\'s done-
You may not want to take it apart.
If you think the contact point is a little loose-
You can cover them with a little hot glue or just use nail polish.
Tape the device to the outside of the headphone housing, but keep it directly below the board (
Where does the wire start).
Weld 3 wires to the battery. \"+\" and \"-
Always marked.
The middle one is used to determine whether the battery is charging (
Blue wire on picture).
Connect all three wires to the power connector and then extend the \"\" wires to the second leg of the power switch. Once done -
Install the power connector (3. 5mm jack)
Start assembling in the hole you drilled for it.
Make sure the Bluetooth module is not blocked.
If your battery is dead
Stick it to the back of the headphone case and put a little hot glue on its side.
Don\'t let the battery overheat as it may stop working or explode!
Test the power connector and power switch before assembling everything.
Since I only have one spare phone, I use my old phone as a power source.
5 V adapter, which happens to be the charger for my battery-donor-phone =)
I\'ll try to come up with a more permanent solution in a few days, but it\'s OK now.
Charging only requires a stable supply of at least 500 mA, at least 3. 5-4V.
You can use any charging device or power supply (
Just don\'t use the middle wire of the battery)
But you can\'t see if it\'s full of electricity.
There is also a danger of charging batteries (
Shorten life, which may lead to overheating).
After the battery is charged, unplug the headset from the power supply.
Enable Bluetooth on your phone, tablet or computer and scan your audio device.
When scanning, flip the power switch on the newly made headset and wait for the connection.
If there is a popup asking for a PIN to be paired: it is \"0000 \".
Wait for the driver to be installed.
At the end of the day, you will hear the short Bell from the headphones, which means that you are connected.
If it is not possible to connect, try resetting the headset and scan again.
Here Today.
Good luck and enjoy life without wires! P. S.
The most important thing was almost forgotten!
After the initial test runs, my 8y. o.
The battery can power the device for 10 consecutive hours (
I don\'t really like turning it out).
This is only 1000!
You will get more if you are going to use the new 2400 battery.
The maximum current consumption of the 16 ohm speaker is about 150 mA per channel, so theoretically, you will get no less than 8 hours of full volume swing and banging before you lose your hearing.
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