Hi. I am very new to mining and I saw something called ASIC Miner block erupters.
If I'll buy a raspberrypi machine, some erupters and a usb fan, will it be worthy?
Five erupters of 2Gh/s will cost me about 220$ I think and a raspberrypi machine will be about 60$.
they will produce about 0.28$ a day in this difficulty.
This way it'll take me about 3 years just to brake even and that's without calculating the electricity cost.
My question is, where was I wrong in this calculation, or was I? Or is usb mining just not worth it?
Thanks in advance, and sorry for my poor English and bitcoin knowledge.