rewriting scooter firmware in rust is the kind of unnecessary excellence i come here for. how did you debug without bricking it, swd probe or pure faith
This is an unbelievably impressive project and a killer write up, very satisfying. I wonder if the author looked into using Slint [1] for the UI, given the codegen bloat issues they had with buoyant (which also looks very cool). I haven't used either, but I've done a few projects with Embassy and am always looking for an excuse to try embedded GUI tools
I read this as the chunks are 64 bytes and thus each chunk is split over 9 frames. I haven’t looked yet but it’s probably an ISO-TP esque framing protocol.
Thank you for posting! I got a e-scooter this spring and wrote my own app for it after reverse engineering the official app + BLE logs. I am not brave enough to do anything with the firmware on it though. Maybe not yet at least
You don't have to fully vibe code it. Most of this stuff doesn't take massive brains, it is just super tedious - especially the reverse engineering. I've never really had the patience for that (except one USB devices that I did reverse engineer when I was younger). AI really helps with the tedium.
What make you think it is vibe coded? There is no mention of genAI being used, and the methodology looks more consistent with hand-written code he actually understands.
The firmware on these things is terrible, also larger e-mopeds btw. Like a 2 second delay on the throttle after breaking (fun when cornering!). Happy this Egret GT E-Scooter didnt turn into..’Regret’
Safe rust does not mean correct logic; best not conflate the two.
You could have perfectly safe rust that disables brakes above a certain speed, inverts steering by wire, or adjusts the charging parameters, for example (depending on addressable capabilities).
[1] https://slint.rs/
Classic CAN uses 8 bytes long frame, so 64 bits. Is it a typo in the post, vor is it using CAN-FD?
My guess is a typo.
You could have perfectly safe rust that disables brakes above a certain speed, inverts steering by wire, or adjusts the charging parameters, for example (depending on addressable capabilities).
I mean. Sort of? The LLM won't go into checking random USB-C connections with an oscilloscope - it doesn't have hands, for one.
How would you know if someone bypassed the restrictions if they were riding it safely?
There is reason for speed limits, they are not there to f--k with people for fun.