Embedded Bluetooth

[hpleung]

Hi,

I was wondering if there are any module you could integrate directly into the Crack so that it can be connected via Bluetooth. So you could listen to music with just the Crack and nothing else.

Thanks.

[Paul Birkeland]

I would just buy an external bluetooth receiver and plug that into the input of the Crack.  While it is possible to add such a module to the Crack, a lot of the ones out there will be expecting to be powered by a 3.7V battery, and you'll need to cook up your own power supply that's well regulated and well filtered to emulate that.  Doing this with the power transformer that's in the Crack isn't impossible, but how one would accomplish this will depend quite a bit on the specific board used and how the grounding is done. 

[Natural Sound]

I use one of these in my garage/shop system. It sounds remarkably good for Bluetooth.

https://www.amazon.com/Bluetooth-Adapter-Streaming-Wireless-Speakers/dp/B016NUTG5K

[hpleung]

Thank you both.

Paul - is it possible at all to extract the DC power required for this blue tooth receive? If so, how would i do this?

This is just exploratory question - because i think it would be awesome if bottlehead crack could receive bluetooth without any external device.

[Paul Joppa]

It's probably possible, but might require a lot of development work. Some issues I see offhand:

* getting 5 volts from the filament winding would require grounding that supply to the signal ground, probably inducing some hum.

* the antenna could be shielded by the chassis plate unless a good location could be found.

* You'd need to introduce a source selector switch unless bluetooth is the only source

My two cents

[Paul Birkeland]

* getting 5 volts from the filament winding would require grounding that supply to the signal ground, probably inducing some hum.

This is the one that immediately came to mind.

[hmbscott]

I use one of these in my garage/shop system.

I've used one of those Esinkin Bluetooth receivers also, and was surprised by the sound quality. For a garage system, I would be inclined to tape the Esinkin to the side of the Crack chassis using blue painter's tape, and voilà you have an all in one unit . That's a very "garage" way to solve problems! Still two cords though.