View Single Post
Old 10-27-2015, 12:26 PM   #2250 (permalink)
MPaulHolmes
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,135 Times in 749 Posts
Yes the CAN needs a little 8 pin $1 or so driver. I included 2 interfaces (CANHI1, CANLO1, GND) & (canhi2, canlo2, gnd) because usually can is chained together. So, canhi1 is connected to canhi2, and canlo1 is connected to canlo2. Then, the 2 that are on opposite ends of the chain only have one (canhi, canlo, gnd) going to it. And those are the ones that get terminated with the 120Ohm resistors. But that's different from the 2 separate can interfaces. If you used 2 separate can interfaces, you would have:

(canhi_1a, canlo_1a, gnd)
(canhi_2a, canlo_2a, gnd)
for one of the interfaces, and for the other CAN interface, just change the a to b. haha.
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
e*clipse (10-27-2015)