Project objective

The Raspberry Pi Zero W is a very small but complete Linux system, so I’d like to see how I can use it in my car for functions such as diagnostics, navigation, dashcam and reverse cam, entertainment system, and more.

Resources

https://lists.gt.net/gentoo/user/286532 (BTctl cmds)
http://gersic.com/connecting-your-raspberry-pi-to-a-bluetooth-obd-ii-adapter/
http://www.cowfishstudios.com/blog/obd-pi-raspberry-pi-displaying-car-diagnostics-obd-ii-data-on-an-aftermarket-head-unit
https://www.raspberrypi.org/forums/viewtopic.php?p=947185#p947185 (SP profile)
https://raw.githubusercontent.com/mytrile/obd-trouble-codes/master/obd-trouble-codes.csv
http://pidashcam.blogspot.com/

Required Parts

Raspberry Pi Zero W (or Pi 3)

32 GB SD card

ELM327 USB OBD-II interface

Mobile USB charger

Optional Parts

Pi TFT display (* if you want to see OBD-II stats without a mobile/tablet/computer)

PiNoir camera module

Goliton Bluetooth OBD-II interface (* can replace USB interface)

USB backup battery with pass-through charging

Build notes: Reading and displaying On-Board Diagnostics (OBD-II)

Cars generate a lot of sensor and diagnostic data across their internal “Controller Area Network” (CANBUS), but the end user only sees a few of these such as speed, RPM, coolant temperature, fuel level, usually in analog format and sometimes just as a single colored light. ¬†Further, diagnostics are distilled down to a single Malfunction Indicator Lamp or “MIL” that usually reads “Check Engine” or just shows an engine icon. ¬†There’s a lot more going on in there though!

Build notes: Cameras

(coming soon)

Build notes: Entertainment system

(coming soon)