CAN Bus shield 2.0, low voltage problems.

Ardiuno Compatible shields

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dwpotter
Pre-kindergarten
Pre-kindergarten
Posts: 2
Joined: Sat Sep 22, 2018 1:20 am

CAN Bus shield 2.0, low voltage problems.

Post by dwpotter » Sat Sep 22, 2018 1:42 am

I have a problem with the CAN Bus shield 2.0

My other CAN bus devices are not seeing CAN messages from the CAN bus shield.
I checked the signalling and I do see CAN H to CAN L voltage toggling but clamped at 2 volts max.
My other CAN bus tool is CAN-H to CAN-L will toggle at around 4 volts differential.

The Seeed studio shield 2 V difference range seems to be clamped at 2V. Its very flat at the two volt level.

dwpotter
Pre-kindergarten
Pre-kindergarten
Posts: 2
Joined: Sat Sep 22, 2018 1:20 am

Re: CAN Bus shield 2.0, low voltage problems.

Post by dwpotter » Wed Sep 26, 2018 3:47 am

This is not a problem, 2 volts is working fine. My problem was in the cable wiring.

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