[adblu] encountered the at any time-existing headphone difficulty with their Sennheiser Urbanite headphones – the cable broke. These headphones are good, and inspite of the cable troubles, value giving a new lifestyle to. Cable replacement is always an alternative, but [adblu] determined to see – what would it take to make these headphones wi-fi? And whilst they are at it, just how significantly battery life could they get?
Armed with a CSR8635 Bluetooth audio receiver breakout module and a TP4056 charger, [adblu] went on rewiring the headphone internals. The CSR8635 presently has a speaker amplifier inside of, so connecting the headphones’ speakers didn’t involve much hard work – aside from basic soldering challenges, as [adblu]’s soldering iron was also massive for the small pads on the BT module. They also identified a 2400mAh battery, and healthy it inside the headphone overall body after generous quantities of dremel work.
The outcome did not disappoint – not only does everything fit inside the headphone system, the headphones also offered 165 hrs of new music playback at varying quantity. Electronics-wise, it definitely is that easy to retrofit your headphones with Bluetooth, but you can generally go the additional mile and structure an intricate established of tailor made PCBs! If firmware hacks are far more to your liking, you can use a CSR8645 module for your build and then mod its firmware.