Hello,
So I’ve fallen down this rabbit hole because, I noticed something on my cars wiring harness.
An “optional” can bus wired directly into the can gateway. “Ok so what so is obd2.” you might say, you would be right. However obd2 is request only and as far as I’ve read might be rate limited by the gateway. Also I work in an industry that uses can a lot so I figured what the heck let’s give it a shot.
So after much poking and prodding I had the right connector the right crimps even found a nearby switched power bus connector to tap into.
I now have a can logger based on a esp32, mcp2515, with a rtc and a sd card to make gvret format logs. I’ve found that the optional bus has like 99 signals and ~30 of them I’ve found information on.
I’ll get some photos and push some code to a repo and share that shortly.