My first project will be to integrate the front and rear view cameras, adding guiding moving lines. In order to do this, I need to intercept CAN bus communication with CMU and manipulate with CAN traffic to make the main display available when the car moves forward with a speed limit of 5-7 mph.
For video switching between front and rear cameras, I decided to use NTSC to CSI-2 convertor. I can manipulate with video images on the Raspberry Pi processor, to overlay computer generated images; to make adjustable guiding lines , controlled by steering wheel angle. Raspberry Pi has NTSC output, which can be connected to rear view camera input on CMU.
Here is a block diagram of my board:
This device can be used as a “black box” recorder, or as OBD2 Wi-Fi adapter, with a simple way to install any custom application, designed on Raspberry Pi platform.
I have a few extra boards available. If you’re interesting in designing your own application, use this form to contact me.