So I have tried out a few options for my 7" infotainment/systems screen going in the centre of the dash in my project build . My aim was to have a OEM style screen connected to the other systems in the car.
First was a simple ra8875 based screen, then a nextion basic, then a nextion enhanced, but all were lacking and either needed a lot of work to achieve what I was looking to do or just couldn't do it.
I didn't go for the bare metal pi option as I didn't fancy relearning how to program that...
So I opted for an android based double din 7" car stereo. It has 2gb ram 16gb ROM with built in GPS, twin rear usb, reverse camera input, audio/video in/outs ,WiFi and Bluetooth.
Operating system is Android 10.1
Super cheap at only 53gbp from eBay UK and came within a few days .
I have been experimenting with a custom app to connect via usb to a teensy4.1 to control the hardware such as the heating controls etc so I can delete the manual knobs.
I will be adding a few other apps to boost its features
A usb module can be added to give tpms operation and monitoring.
A few photos of the unit are here.
I will post more as I progress.
mini GPIO :done More soon
CANbus broadcast interface: done
Simple sd logger :done
External CAN io: Inputs :done
Gearbox controller: working