Marshall Bluetooth Update

So I have the Marshall Major III headphones the version without the bluetooth. I would like them to sometimes be more laud (so I could enjoy the music more and so I couldn't be forsed to hear anybody/anything) and without the cable, don't get me wrong I love them and the cable too, but sometime I would like to use them without a cable. For example if I am doing something with solder station I would like to take my incompetence out of the equation. There is a very high possibility that I will somehow destory the cable and I would like to avoid it.

It looks sketchy, but that's the nice part about it.

There are not many thins you will need, but there are some:

MH-M28 is a Bluetooth 4.2 Stereo Audio Receiver it costs under 10 Euros and it has 3.5mm Jack. The older brother MH-M38 has an amplifier. The younger brother MM-M18 has some an interface so this could be better for next time. Battery will power up the module and notice that I haven't added any additional battery protection so you should add some...

Aux cable is optional. You could just solder the 3.5mm jack and that would be better.

Solder iron

3D printer

As you have probably noticed the part that connects the headphones frame and the MH-M28 is 3D printed. I have designed the part in FreeCad. The convertion to gcode happened in Cura and it was printed on a Ender 3 with black PLA.

Print Settings

You can download the model here