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May 31, 2017, 12:01 AM
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The car stereo project

So a solution to the car mp3 player presented itself, eventually. It should be a very simple bluetooth DAC with its own volume control. It shouldn't use the standard bluetooth speaker protocol, since that volume control is erratic. Both a non deterministic neural network in the Android operating system & different settings for different bluetooth speakers make it worthless. There should be a volume control just for cars, which is fixed.

The phone should constantly listen for this bluetooth DAC's advertisements. When it connects, it should resume playback from a playlist that spans multiple directories. When it disconnects, it should pause playback. After a certain time disconnected, it should rewind a few seconds. That way a glitch doesn't make it rewind.

It should be simple enough to not be a disaster when it's stolen.

This should give the desired auto start when the engine starts. The lion kingdom isn't aware of an existing solution. They either pair the car as a standard bluetooth speaker or require plugging the phone into a USB port to access the files on it, every single time you get in.

Of course, Calif* doesn't allow touching a phone while driving, at all. The simple DAC would need buttons for skipping songs. It quickly grows into the original Android Auto vision of a head unit which mirrors a phone. It would instantly get stolen. The Goog has since abandoned that vision in favor of just another phone app which uses your car as a bluetooth speaker.
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