I got a PCB in the group buy so fairly pain free. The github documentation is far from idiot proof but the info is all there. It forces you to work it out for yourself to some degree which is pretty fun. Took 3 evenings from start to finish. I've got the parts for integrated scales in the post.
I done a gaggiuino
https://www.youtube.com/watch?v=QTGCFp-r7HY
Now to figure out how to use it