Raspberry Pi CAN-Bus & Dash-Cam System

PROJECT O.D.A.S.H.I.

Project O.D.A.S.H.I. (Onboard Diagnostics Assistant Serving Helpful Information) is a Raspberry Pi 5 based CAN-Bus/K-line reader and dash-cam system. It is designed to be a custom solution for handling a variety of smart-car features in a secure manner. The system utilizes a Raspberry Pi 5, USB camera, buck converter, audio DAC, and CAN-Bus interface to provide the following features:

1. Car system diagnostics
   • Engine and system performance
   • Any error codes (such as check engine lights)
   • Oil, coolant, and battery levels
   • Other system data as needed
2. Dashcam recording
3. Apple Carplay
4. Voice activated commands
5. Maintenance reminders based on odometer reading

BUILD YOUR OWN PI DASH-CAM

1. Install Raspberry Pi OS Lite (or distro of choice) on a Raspberry Pi
2. Connect USB camera of choice (I am using a Logitech Webcam)
3. Update the system (sudo apt update && upgrade)
4. Run the following to show your webcam's information

   v4l2-ctl --list-devices

5. Create the following script in /usr/local/bin/

   #!/bin/bash
   cd /home/pi/videos
   find /home/pi/videos -type f -name "*.mjpeg" -mtime +14 -delete
   
   ffmpeg -f v4l2 -input_format mjpeg -video_size 1280x720 -framerate 30 \
     -i /dev/video0 -c:v copy -f segment -segment_time 60 \
     -segment_atclocktime 1 -strftime 1 "dashcam_%Y%m%d_%H%M%S.mjpeg"

6. Set the script to run on startup
Now you have a fully functioning dashcam that should record all video while running and store locally. To expand it to the full ODASHI setup, follow the next step.

BUILD YOUR OWN ODASHI