CanBus with 5 EBB42 Boards

[mykepredko]

Here’s the comment from Kevin:

Does it make sense to actually sync mcu clock speed?

In common single mcu setups, using the main mcu as the timing reference means that measurement noise doesn’t impact kinematic timing. (Since all the peripherals are on the main mcu, we can time all movements relative to that main mcu, and any noise in the correlation between host and mcu timing doesn’t alter those movements.) Even in multi-mcu setups, if the X and Y are on the main mcu then again, measurement error wont impact the vast majority of movements. Separately, just to be clear, the…

I interpret that as saying that the X & Y steppers should be on the main controller (which I presume is connected to the host either by Serial or USB).

The way you’ve written things up, it sounds like you are using the Seed Studio 2 channel CAN BUS RPi GPIO shield for your CAN interface.