Great walkthrough. Thanks.. Wondering what do you do if you have used the 2 usb ports on the pi. Can you chain usb hubs or is there another trick to it?
Hi, for my setup I have a 4-port powered hub (2.5Amp power adapter for each), and each of these hubs plugs into 1 of the usb sockets on the rPi (I don't need a keyboard or mouse or whatever because I have it set up to be controlled over the network). If I had to plug in a keyboard I have a spare socket on each of the two hubs because I have 6 block erupters instead of 8. If I wanted to get more block erupters then I would buy another hub and hope and pray that this would daisy chain on from one of the hubs, but from what I have read this can be iffy with an RPi. best of luck