View Single Post
  #24   Spotlight this post!  
Unread 31-01-2015, 09:41
wireties's Avatar
wireties wireties is offline
Principal Engineer
AKA: Keith Buchanan
FRC #1296 (Full Metal Jackets)
Team Role: Mentor
 
Join Date: Jan 2006
Rookie Year: 2004
Location: Rockwall, TX
Posts: 1,173
wireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond repute
Send a message via AIM to wireties
Re: Talon SRX CAN Daisy-Chain Wiring

Quote:
Originally Posted by Daniel_LaFleur View Post
Please state where your proof is.
CANbus can work with the terminating resistors not at the end of the bus, but it is more prone to errors.
Are you willing to take a chance on those "errors" popping up in a finals match?

Students - please take the advice of Ether and others and use CANBus as intended. Terminate at both ends (done for us at one end on the roboRio) only, keep stubs under .3m and total length under 40m. Use shielded twisted pair when possible. The standards exist for a reason - much testing was done to arrive at the numbers in the standards and the designers of the CANBus nodes (on the roboRio, PDP and TalonSRX for example) follow the standards in their designs. Intentional deviation from the standard puts your design in unknown territory probably without the time or facilities to do proper testing. This is most unwise.

HTH
__________________
Fast, cheap or working - pick any two!

Last edited by wireties : 31-01-2015 at 09:42. Reason: spelling