Worklog Crankshaft Android Auto Unit

[The Next Guy]

I've been working on an Android Auto head unit. I'm using an RPi 3 to drive a 7" touchscreen over HDMI. Im by no means attempting to make this the smallest unit, just something functional. As if right now it works 100%. What I got for features:

• Uses Crankshaft to connect to Android phone with maps.
• Has 2 desperate 12V to 5V regs, one for screen, one for the pi.
• I2S audio out. Chip supports 192Kbps audio.
• Has a microphone crudely slapped in.
• Has dedicated USB port for the phone.
• 7" Touchscreen for interfacing.

Here are some pictures of my horrid soldering job and it in operation:

 

[cheese]

I've been looking into doing something similar but I'm gonna do all custom software so I can have more granular control. Have you tested it in car? That would be some neat pics

 

[The Next Guy]

Not gonna lie but the case is definitely janky. It's from a cheap 7 inch screen but the screen actually used in the project is not the same. It just so happened that the screen fit perfectly upside-down. Version 2 is gonna have a completely different case, probably 3D Printed entirely.

It's probably also gonna have a combined cable with tentacles at the end for USB, Audio, and power.

As a bonus, the output from the I2S amp is indistinguishable from my G8 Quad DAC and also much louder.