Following up from the OpenAuto Pro / Raspberry Pi Head Unit with Android Auto Full Install Build article,
I installed a Raspberry Pi with a touchscreen into my 2005 Subaru WRX to create a DIY Android Auto head unit. After several weeks of testing, I wanted to provide an update on how it’s holding up.
Heat Performance
One big question was whether the Pi setup could withstand hot temperatures inside a car. During some recent heat waves, the interior reached over 140°F!
High Temperature Testing
Remarkably, the Pi and screen survived without any issues. After a month, I opened it up and nothing had melted or warped. The Pi never reached its automatic shutdown temperature.
Performance on Hot Days
On multiple 100°F+ days, I drove for over 30 minutes with the system on. It never slowed down or glitched due to heat. The fan and heatsinks seem to be keeping it adequately cool.
Software Usage
I’ve been using Open Auto Pro software for several weeks now. Overall it’s worked great, but there is some room for improvement.
Moving Between Apps
The workflow to jump from Android Auto back to the gauge dashboard is a bit clumsy. It takes several taps to get in and out.
Customizable Gauge Display
The dashboard software is awesome. I can display any engine stats I want from the OBD2 port, like boost pressure, air/fuel ratio, etc.
Startup and Shutdown Script
A key part of this project was an automatic boot up and shutdown sequence when turning the car on and off.
Refining the Scripts
After daily driving, I tweaked the scripts for increased reliability. Now it turns on and off flawlessly every time.
GitHub Repo
I documented the wiring diagrams and Python scripts on GitHub. Check it out if you want to build your own auto on/off functionality.
Future Upgrades
While the main system is solid now, I still have some improvements and additions planned.
FM Radio
I need to wire up the FM receiver I have and get radio stations working.
More USB Ports
Additional USB ports will let me add other accessories down the road.
Rotary Volume Knob
I want to install a physical volume knob to make adjustments easier while driving.
Stay tuned for more upgrade videos as I continue enhancing this DIY Raspberry Pi car computer!
○○○ LINKS ○○○
Raspberry Pi Install ► https://youtu.be/RgbHXTHUnQw
Start & Shutdown Script ► https://github.com/novaspirit/oap_start_stop
ESP01 ► https://amzn.to/3rrCiPw
ESP USB Programmer ► https://amzn.to/3zsANmS
USB DC-DC ► https://amzn.to/36TRonp
OBD II ELM327 ► https://amzn.to/3zsxQmk
