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teachop / FlexCAN_Library

Arduino library for CAN on Teensy 3.1
The Unlicense
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Automotive OBDII CAN ports are already terminated. #11

Closed Mike4U closed 8 years ago

Mike4U commented 8 years ago

Guessing many may want to use this to look at their auto's OBD port.

The existing OBD CAN port under your car's dash is on a bus that is already terminated on both ends in order to run properly when nothing is plugged in. Adding more termination resistors most likely will make matters worse when plugging into the port.

Mike4U commented 8 years ago

Forgot to add the above refers to the termination statement in the readme.

teachop commented 8 years ago

Yes, that is correct. Termination resistors are located at both ends of the signal bus.

Mike4U commented 8 years ago

Newbie's don't know that. Why don't you add it to the read me instead of:

"Note that CAN will normally not work without termination resistors."

thanks

teachop commented 8 years ago

Ok. I will get some explanation of the proper termination concept.

From: Mike4U notifications@github.com Sent: Saturday, February 13, 2016 12:13 PM To: teachop/FlexCAN_Library Cc: teachop Subject: Re: [FlexCAN_Library] Automotive OBDII CAN ports are already terminated. (#11)

Newbie's don't know that. Why don't you add it to the read me instead of:

"Note that CAN will normally not work without termination resistors."

thanks

Reply to this email directly or view it on GitHubhttps://github.com/teachop/FlexCAN_Library/issues/11#issuecomment-183704745.