I just had a few questions:

1 - I have a rpi that I used previously when I had block erupters and I would like to use it for mining with a tube. I was going to use Minera but have been unable to find anything on how to set this up. Right now I do not have the USB-UART that comes with prismas but I do have a BE controller that I am running it on right now. I cannot for the life of me figure out how to setup the rpi as a proxy. Anyone know where a set of instructions are?
2 - Does anyone know if Minera can use the adafruit screen on the pi?
3 - Does anyone sell just the USB-UART Adapter? I would love to just plug in my tube straight to the rpi but havent been able to find one yet.

Thanks