You can see my latest commits for allowing for more chips. The Blades are 40 chips per USB card. So in the gridseed-options you can do chips=40. This allows cgminer to display the correct local hashrate of each board.
I also just forked the girnyau project because it allows for calling freq=838 easily which seems to work best for these devices so far.
thx, a lot ... would it be possible to have a rasp binary .. of your fork? :-)