Sat Jan 17 18:34:21 CET 2009
LO HI allowed diff
dominant 1.5 3.5 0.9 - 2.0
recessive 2.5 2.5 0.0 - 0.5
This is +-1V differential NRZ signalling.
Main ideas of CAN:
- communication in noisy environment
- arbitration-free broadcast
What about re-using networking cable + telephone wire?
Local canbus: probably ok to use flatcable + shield?
The idea is that CANbus does arbitration, so a local stackable bus on
CANbus might be interesting. Does this still need a driver like
MCP2551, or can the TX/RX lines be connected? As long as
dominant/recessive is respected it should work just fine.