@Tinbum the UNO and Mega a very slow compared to DUE
Im looking at Dual can and Tripe CAN bus systems also
Just started to look at Teensy 4.1 its way faster
Teensy still uses Arduino IDE
And you can get a 3 Port CAN interface
Good thing is the Teensy is small board
Can I ask with the mega you got working with Three CAN BUSS
Was that just with using a IC2 and having different address for the 3 boards on the IC2 ?
If want to say with DUE
I have used this dual interface and it work well
And maybe this could be used if wanted a third Bus