Worklog Crankshaft Android Auto Unit

The Next Guy

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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:
20191103_224458.jpg
20191103_224342.jpg
 

The Next Guy

Sun Dried Cases
.
Joined
Feb 28, 2017
Messages
92
Likes
131
Location
Washington State
Portables
Melted in the Sun
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.
20191108_154847.jpg

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