Just a quick update since I'm busy with work stuff. But I did finish this on time, I didn't bail. Learned a lot, definitely need to study CAN more. I tried to write my own network stack, that is hard. I bailed on that approach and went with simpler code that did basic acknowledgement, it wasn't what I wanted, but it worked. Wound up with three nodes on the bus. That's the demo, some day I need to build a version that will do stuff around my place. I'll add some pics when I find them.