Toolboard Configuration

RatOS supports multiple toolboards connected via USB. They can be flashed initially through the configurator, and will automatically get flashed when klipper is updated. Use the configurator wizard to select and flash your toolboard.

What about CAN?

RatOS does not provide any means of setting up a CAN connection to your toolboard. At this point for this use case, CAN has no benefits and is harder to setup and use. See No, you don't want to use CAN for more details on why CAN isn't the default protocol in RatOS. Besides the points listed in that blog post, CAN devices cannot be identified automatically, which violates RatOS' design principle.

If you still want to use CAN, you can do so manually just like every other klipper installation.

Wiring

Because we use USB we need to take extra care to secure our wiring, it is imperative to make sure that the USB-C connector cannot move. Generally this is a lot easier to achieve with the "42" size variety of toolboards than "36".

There are several mounts for EVA and the Rat Rig toolhead on printables for inspiration, just make sure you use one where you can tie down the usb connector and cable.

If you want a gucci cable, 3do.eu has a nice flexible FEP/Silicone sleeved USB-C cable rated for up to 200c in various lengths.

To keep the umbilical nice and straight, pianowire does a great job. The bigger the size of your printer the thicker a wire you need, for reference a 0.8mm piano wire is perfect on a 400mm V-Core.