Raspberry Pi Car Stereo

Internet connected car stereo with obd 2 and remote start.

Please mind the mess! I am still working on this.

Interesting! Did you find Christian Brauweiler’s instructions helpful in setting up your Raspberry Pi stereo for your truck? What were some of the challenges you faced or things you learned from his guide?

I started off with a Raspberry Pi Zero W, connecting it to my TV via HDMI. Later, I bought a 7″ touchscreen from an eBay vendor. Unfortunately, the initial screen didn’t turn on, prompting the seller to send a replacement, which also malfunctioned. After a long wait, the new control board from the seller finally showed up – but not on schedule. To resolve the previous, I replaced the Raspberry Pi Zero for a Raspberry Pi 3, since it has a much powerful processor, and I opted for the official Raspberry Pi 7” touchscreen.

I’m facing similar challenges in this project due to issues with both GPS and Nova. Despite relocating the entire project near a window, I’ve still been unable to obtain a GPS signal or a cellular connection. At the moment, I’m focusing on resolving the cellular signal issue, but the lack of connectivity is hindering my progress. I’ll keep you updated as I make progress.

The first step is to apply an image to your SD card. I used this image of Raspbian Jessie Lite from April of 2017. I have been using Etcher on Windows to copy images to SD cards and love it.

Next, we need to fetch the carPc install script built by Andrei.

Install the pre-built carpi project with:

wget https://download.christian-brauweiler.de/RaspberryPi/CarPC/current_carpc.zip

unzip the file with

unzip current_carpc.zip

install the provided software with

 ./install_carpc.sh

That process takes 15-30 minutes.

Once it is done, install the hologram sdk with:

curl -L hologram.io/python-install | bash

If you are like me and receive some errors, try reinstalling pip with this:

sudo easy_install -U pip

Now, if you are using a USB gps you will need to make a few changes.

Edit /boot/config.txt with:

sudo nano /boot/config.txt

At the end of the file, add:

enable_uart = 1

Next, we need to modify the gps daemon to read from the serial gps device.

sudo nano /etc/default/gpsd

find the line:

DEVICES="/dev/ttyUSB0"

and change it to

DEVICES="/dev/ttyS0"

In pursuing the project’s multimedia capabilities, I opted for a USB sound card to enable video playback, music streaming via MP3, and Bluetooth audio. This setup accommodates a standard 3.5mm audio cable that can be connected directly from the Si4703 to the sound card’s audio input, and then to my truck’s speaker system via the audio output on the sound card. However, amplification may be necessary after installation, which is yet to be done.

Now, if you are using a USB Sound card like I mentioned above, you will need to configure it to be the primary audio device like this.

Create a new file, /etc/asound.conf like this:

sudo nano /etc/asound.conf

Now add this to the file:

pcm.!default  {
   type hw card 1
}
ctl.!default {
   type hw card 1
}

Navit GPS Map:

Next, we need to obtain a map for use with Navit GPS software, which is included with our Kodi build and allows the Navigation button to launch the application. While Navit may not be the most popular GPS option, it’s a great choice for this setup. We’ll get the map from the Navit-Project website, selecting the North America region (excluding Alaska and Hawaii). The file size is approximately 4GB. Once you’ve downloaded it, copy the map1.bin file to the Raspberry Pi’s /home/pi/.navit/ folder.

Source: Raspberry Pi Car Stereo