A few years ago, I rescued a pair of nice headphones from the trash and replaced the original speakers with better sounding Sennheisers.
Then, I changed the jack cable for something fancier (and I must admit, less practical).
Now, it is time to put the headphones on the operation table once again to cut the wires..
Because I wanted to keep the headphones as much in their original state as possible, without adding holes, I decided to use the original potentiometer for control and volume. This means I had to find a way to detect a press on the potentiometer. For the bluetooth part I will use the Microchip BM62 Bluetooth module. It’s really cheap and has everything already built-in (Bluetooth LE, a serial interface for control, pins for LEDs, a battery charger and an audio amplifier).
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