here is the hot plug in USB audio info via Timur's Kernel which he used from another developer (jacknorris) with permission...
Timur references lines 433 - 453 in post #530
Thanks for taking on this project and sharing your progress. I have been researching an Android install for my car for the past couple weeks. I was thinking about using an Android stick (Mini PC) such as the MK808B mentioned by another commenter. For the same price they can be purchased with integrated bluetooth [edit: Does not include GPS]. Did you consider this option as well?
for those playing at home, the android app for HD radio control finally was released
Out of curiosity, did you look at the Wandboard Dual/Quad when you were determining what ARM board to use?
I'm considering the Quad, but the community for this board doesn't seem to be anywhere near as active (on the Android front -- LOTS of folks using it with Ubuntu) as the ODROID side. As a result, it's been difficult to see if the JB 4.2.2 image they created supports GPS devices at all (that's what's holding me back right now)...
The *primary* reason I'm considering it is that I can get the board, case, and an antenna (for the built in BT/WiFi) for $154 including FedEx "3-5 day" shipping at FutureElectronics, whereas the ODROID requires external USB devices for both, and doesn't have an official case available (though there is a third party 'case' available for yet *more* cash). The Wandboard is also sold through two or three US retailers, which makes getting them faster/easier...
I don't plan on playing games or watching movies on the device -- it's going into my truck for a head unit replacement (like what you're doing with the O-U2) and will be used for Pandora/Slacker/etc and navigation, so graphics performance isn't extremely important to me (though it looks like the Wandboard is fairly capable here).
So, after all that rambling, I guess I'm just looking for thoughts... :)
Lord, has it been a long time. Its awesome what you're doing. I left the PC in to handle certain things the Androids couldnt. I also left mine in to act as a GPS gateway for all the devices since most Android on a stick do not have GPS. It also does a few other things, but most def not doing like it used to.
Here is my question, I went the PC on a stick route. I just didnt want to spend the extra money, but seeing the stats is making me reconsider. I just want to know if you have squared away the touchscreen deal because all though I think I may have found a answer for my devices (I parted out the 7inch screen, but havent bought the 10inch replacements), so I dont know for sure if it works.
Now this is a side question. You know im all about multizone, so do you know of anything to bridge all the units together? I use Miracast on my phone, and it looks to be the answer, but its fairly new and not fully developed. I could always go back to the KVMP idea, but God does it require so much!
Again guys I'm sorry the blogs have slowed down some, the "play" time has been short over the last couple weeks. The X2 IS still in the car and an experience blog is forthcoming!
The Utilite device looks promising, once it gets released. Specs claim 10-16V range on input power.