Re:Comma Three Devkit
by solarkraft on Saturday July 31, 2021 @09:10PM
(#28022864)
There’s some messing around involved in building the interfaces to the cars. Comma’s excuse for why you shouldn’t be concerned is that both Open Pilot and the cars themselves have limits against erratic movements.
[ Parent
| on HN ]
> Comma’s excuse for why you shouldn’t be concerned is that both Open Pilot and the cars themselves have limits against erratic movements.
Are these limits baked into the cars at some level beneath Comma, or do they rely on the same physical layers and networks? It makes perfect sense to me that the car has its own limits; my concern is that installing Comma takes the car outside of its expected operating parameters and that I have no real way of verifying whether those limits are still in place.
Re:Comma Three Devkit
by DesolationJones on Saturday July 31, 2021 @09:46PM
(#28023065)
They have a seperate device that enforces more conservative limits than what the car allows.
https://comma-ai.medium.com/how-to-write-a-car-port-for-open...
Any safety limits like on the eps firmware stays intact and aren't bypassed.