Waveshare RS485-CAN-HAT (MCP2515)

[ChDel]

hello chdel - about the A+B connectors on the Waveshare CAN Hats:

i am not shure, did not test it much. They are interfaced to the normal Read/Write Lines of the Raspi.
To read them try "cat /dev/ttyAMA0" - but it is possible this port will interfere with the Bluetooth, but try
it out yourself. You have to enable it at first with the UART Button in openplotter-serial.

Often the lines will read the correct NMEA sentences if the Baudrate is correct, but sometimes you have to exchange + or - coming from some old devices...
As they are connected with drivers to the outside, the rpi pins should be safe from voltages higher than it´s 3.3 V.

But it will be easier to just use USB serial converters if there are free Ports.


keep healthy - Holger

I turned on the UART, tried swapping + and -, tested different config in opencpn but still no activity on opencpnOUT nor rs485
I should receive the USB rs485 soon and will give news. thank you, Christophe