Did you ever get an answer to your question about where to download the default sketch for the Rainbow Cube? (Actually, there are two somewhat different ones among the 16 cubes I’ve purchased.) I’ve been searching all over and haven’t been able to find it. But it must exist somewhere, right? I suppose we could recreate it from watching the display, but it’s a pretty long sequence and that would be a lot of work.
I’ve started working on a 3D editor to replace “cubeXcontrol”, which doesn’t work with Rainbowduino v3. Do you know of an editor that works?