I have an Arduino UNO R3, but I want to buy a CAN Bus shield module to send and receive CAN messages. Is there a module that supports CAN FD? I know there is a module with the model number MCP2518FD. Can it be connected to the Arduino UNO R3?
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Yes it has a SPI bus and looks straight forward. I am not familiar with the chip and currently I do not know of any libraries for it. Let us know out how it works out for you.
I would not recommend using an UNO R3 as you microcontroller if you wish to use the MCP2518FD as it is too 'slow'.
the R4 or Due would do on the other hand as they clock as the much higher rate.
hope that helps...
PS: if you do manage to get the 'FD' read/write working, interested to know! 
been really struggling with this chip and been only able to use it for standard CAN only so far...
What is that based upon, nothing in the data sheet confirms this. When the processor is to slow it is generally a software/configuration problem. I use the old Nano's on my MCP2515 modules and have no problems at 500K with a 20 node network.