The R1 runs 2 instances of cgminer with the familiar Antminer GUI and with crazyguy's firmware and a number of mods I have done adding frequencies and putting back the other stuff Bitmain took out in the R1 it works quite well.
Very cool, I use CrazyGuy's R1 for my U3, too. I noticed that it's missing frequency 250, did you do a write up how to add missing frequencies? I'd like to add that one back in, even though I run my U3 at 237.5 freq normally.