Maker KreAch3r Upgrades a 2004 Mazda 6 with an OpenAuto Pro-Powered Raspberry Pi Computer System

Pseudonymous creator KreAch3r has finished a project to bring a 2004 Mazda 6's in-car navigation and entertainment system bang up to date, courtesy of an upgrade to a Raspberry Pi 4 model B running OpenAuto Pro.

"I'm pleased to be able to finally present my completed project. I installed [an] RPi 4B running OpenAuto Pro inside the stock navigation unit of the first generation Mazda 6 (2004)," KreAch3r explains. "I had to track down the unit and ship it to me because my car didn't come with it, and painted it."

"I also used an AUX XcarLink module for Bluetooth audio and music so that the stock stereo can remain fully functional (including the small display). I also took extra care so no permanent modifications are made to the car; I made a custom Mazda to Mazda harness so you can remove everything."

The upgrade offers a range of impressive functionalities, including all the features of OpenAuto Pro bar a backup camera, on-board diagnostics, wireless Android Auto connectivity, Google Assistant, full access from the steering wheel controls, ties in to the stock stereo unit, and even automatically dims the screen thanks to a photoresistor installed in the stock IR sensor window area.

Other features of the build include dedicated GPS and real-time clock modules, the former allowing Android Auto navigation to work accurately even if the Android smartphone driving it is stored in a pocket or bag, and safe power-up and shut-down procedures tied to the car's power system.

Performance, too, is impressive: "I did have lags when I tried to use it with an OnePlus 5," KreAch3r admits, "but since I switched to a Pixel 2 XL, no lags whatsoever. I even keep the phone in my pocket and the Pi gets GPS info from the GPS module and still doesn't lag behind in navigation. Music and calls never lagged, in any case."

More details are available on the project's Reddit thread, or in the Imgur gallery.