Waveshare RS485-CAN-HAT (MCP2515)

[ChDel]

I have installed OpenPlotter on my Rpi 4B +  RS485 CAN HAT connected to NMEA2000 backbone with blue and white wires
can0 appear in Signal K Dashboad but seem inactive
nothing in the data browser while my B&G shows depth, wind...
I have followed installation procedures Openplotter § CAN and RS485 CAN HAT user manuals
still nothing
An idea to go ahead in my project ?
Thanks

• you say you have wind and depth - is that coming from the Pi or somewhere else?
  
• Is the Blue wire connected to CAN-L and White to CAN-H?
  
• is the backbone powered?
  
• is the backbone terminated properly?
  
• have you set the correct oscillator frequency?
  
• Have you set the correct Interrupt (GPIO pin)? 
  

The second point put me on the track: the error was due to the wrong color in the NMEA 2000 connector. The white and blue wires were in the wrong place in the connector.
It Works perfectly now !
Thanks a lot

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I have installed OpenPlotter on my Rpi 4B +  RS485 CAN HAT connected to NMEA2000 backbone with blue and white wires
can0 appear in Signal K Dashboad but seem inactive
nothing in the data browser while my B&G shows depth, wind...
I have followed installation procedures Openplotter § CAN and RS485 CAN HAT user manuals
still nothing
An idea to go ahead in my project ?
Thanks

Did you remove the internal 120 Ohm SMD-Resistor on the WAVESHARE Can Board?
You can measure between H & L, or direct on the Bus for 60 Ohms, but the last only with all Devices off.

CAN does not like false Terminations.


Good Luck,
Holger

I solved my problem as explain below: problem of wire color in the NMEA2000 connector. It works well now but I didn't remove the SMD resistor. Is it necessary if it works like that, because I don't know how to do...
Thanks

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Thanks to your advice I solved part of my problem: I can read the NMEA2000 data from my backbone and in particular the wind direction in order to control my ST2000 Autopilot.
The question now is, should I add a USB-RS422 converter in the USB Rpi port with two wires to connect the autopilot,
or can I use the rs485 input/output connector of the RS485 CAN-HAT?
I couldn't find anything for this in the OpenPlotter procedure. No way to add rs485 connection in CAN-Bus window
The RS485 connector of the HAT does not seem to be controlled by Openplotter
Thanks
Christophe