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Waveshare RS485-CAN-HAT (MCP2515)
#11
(2021-04-14, 08:17 PM)Techstyle Wrote:
(2021-04-14, 07:45 PM)Guttagrynna Wrote: Thanks for your posts. I got one of these the other day and now I just got it to work after changing oscillator frequency to 12000000. For some reason I had it set to 8000000. I have a small test network at home with a B&G Triton2 display where i can now see a compass heading.

And as you say, it's good value. I bought a PiCAN-M HATat around 100 Euros but it doesn't play well with my PiJuice HAT in some respects, so I believe I will stick to this solution and maybe sell the PiCAN-M.

Great News - Glad it helped you!

after my experience, I did go ahead and write the manual page for it:

https://openplotter.readthedocs.io/en/la...n_app.html

Could you check through this page and any additions you think are necessary could be added (either you add or let me know and I can add)

A section on the PiCAN-M HAT would be good if you could write one?

(2021-04-14, 08:04 PM)SCarns Wrote: That's great! I was about to suggest you look in the MFD and see if it sees anything on the STNG backbone. But, glad you figured it out.

Not familiar with the Waveshare RS485-CAN-HAT. I run the Rusoku TouCAN Marine USB adapter, which I thought was a good deal at $70 US. Got it to use the TouCAN plugin in OpenCPN, but have grown up to a full-blown SignalK setup since then, so I used the TouCAN adapter as the interface. Works fine, but I like the price of the Waveshare and have found their stuff to be quality. I have their USB hat for Pi4 and an RS-485 USB adapter for a solar project I was working on.

Good post! Thanks for sharing!

Steve

Thanks Steve!

If you look at the CAN page of the documents - you will see it there is nothing in the CAN_USB section, it would be great if you updated that section with your experience:

https://openplotter.readthedocs.io/en/la...n_app.html

thanks
Jason

Jason, 

The TouCAN Marine USB adapter installs with it's own set of drivers, so it by-passes the CAN Bus set up. I'm happy to document it, but it doesn't seem as if it would go in that section...

Steve
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#12
Does anyone have any experience with the Waveshare two-channel CAN Hat? I had it working, now I can't seem to get anything out of it.

Question: If the termination isn't correct, will I see anything coming out of the interface with candump or the OpenPlotter CAN app? The only device I have on my 2000 bus now is my AIS transceiver, which is powered independently doesn't need power from the bus. Still, I was thinking I would still see the output of the Signalk->NMEA2000 plugin, even if the bus is completely disconnected from the CAN Hat.
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