It seems to me that Rick is looking for solution to display info on such LCD usb module, may it be from python watcher or custom graph from Munin, not solution to graph some data itself.
Theres a fair bit of overhead in designing this solution which is why I'm asking if the idea is novelty or for a serious purpose.
Of course it's a novelty but it's as serious as serious is monitoring data. As of now I'd agree that setting this up for only simple monitoring this pool's stats is a bit of overkill. However I'm in middle of writing console python program for displaying stats from any pool or exchange that provides its own webapi and probably could add support for displaying the data on such usb display, in that case this kind of solution would be a little more reasonable.