1

This is a part of SeeedStudio CAN-Bus shield schematic. The vertical green line on the left seems suspicious to me. Am I missing something?

enter image description here

Improve this question

1 Answer 1

Reset to default
2

No, it's not a mistake. It's related to this statement on their Wiki:

When you use more than two CAN Bus Shield in one net, you should take the impedance into consideration. You should either cut P1 in the PCB with a knife, or just remove R3 on the PCB.

If you look closely at the pads of P1 you will see a small trace joining them together. That is the "rogue" green line you found. By cutting that trace you disconnect the termination resistor. You can then re-connect the termination resistor by soldering the pads together again.

Improve this answer
1
  • Yes, that very remark is what drew my attention to the pad jumper. I assumed "P1" is what I will be cutting. Also on the PCB the part is labelled as "P1". Now you are telling me the part I will be cutting has no special symbol in the schematic and is merely described by a boring green line. :) That is... unexpected.
    – Jaroslav Záruba
    Mar 15, 2017 at 8:48

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.