Lebowski CANbus Protocol
- Thread starter gotgraham
- Start date
If it helps in searches, it's "Lebowski" rather than "Lewbowski". 
This is the main thread for it, with manuals, etc. I don't know if they have the protocol in there, but I'd expect they should.
https://endless-sphere.com/forums/viewtopic.php?f=30&t=36602
This is the main thread for it, with manuals, etc. I don't know if they have the protocol in there, but I'd expect they should.
https://endless-sphere.com/forums/viewtopic.php?f=30&t=36602
gotgraham
1 mW
- Joined
- Feb 10, 2018
- Messages
- 12
What I'm looking for is the CAN IDs for the messages it's transmitting, the message length in bytes of each message, and how to decode the messages (byte order, definition), etc. So for example (I'm making this up, but this is the kind of thing I'm looking for) -
CAN ID 0x1234
Data Length: 2 bytes
Data: Data[0]+Data[1] = 16-bit unsigned RPM
I can't seem to find any info, other than: "Throttle and reverse information (60 to 70 bits) is sent at a rate of 100 Hz" and "Variables x 1 , x 2 are shared over CAN bus". So it's clear there should be messages for at least throttle position, drive mode (R or D), and the polynomial function for the throttle - but the format of the data is never stated - and I read every version of the manual. Perhaps I'm missing something?
CAN ID 0x1234
Data Length: 2 bytes
Data: Data[0]+Data[1] = 16-bit unsigned RPM
I can't seem to find any info, other than: "Throttle and reverse information (60 to 70 bits) is sent at a rate of 100 Hz" and "Variables x 1 , x 2 are shared over CAN bus". So it's clear there should be messages for at least throttle position, drive mode (R or D), and the polynomial function for the throttle - but the format of the data is never stated - and I read every version of the manual. Perhaps I'm missing something?
That I don't know. I'd've expected that info to either be in the manual, or to be a standard kind of data that anything on CANbus would use (and thus be documented many places on the web).
I haven't finished building mine yet (just the brain boards for the pair I have is around $200 in components, so I'm scavenging everything I can off of other things, and it's taking a very long time), but even when I do, I don't think I'll be using the CANbus, so I haven't read up on any of that stuff.
I guess you'll have to ask Lebowski (I'd say that thread is the best place for it).
I'd've expected that info to either be in the manual, or to be a standard kind of data that anything on CANbus would use (and thus be documented many places on the web). I haven't finished building mine yet (just the brain boards for the pair I have is around $200 in components, so I'm scavenging everything I can off of other things, and it's taking a very long time), but even when I do, I don't think I'll be using the CANbus, so I haven't read up on any of that stuff.
I guess you'll have to ask Lebowski (I'd say that thread is the best place for it).
AlexPv
10 µW
Excerpt from the letter:
I did it, but there were difficulties with adjusting the speed of the CAN bus,
since the controller is not clocked by a quartz resonator.
I did it, but there were difficulties with adjusting the speed of the CAN bus,
since the controller is not clocked by a quartz resonator.
