OneStringMiner_DIY1 setup with 2 boards, Raspberry Pi, D-link 7-port hub, PSU and fan.
This is all you need to hash 60GH/s.
This setup can be upscaled to ~20 DIY1's.
More is possible, but the startup of cgminer takes longer and longer.
The hub is supplying power to the Raspberry(white USB cable).
DO NOT USE THE POWERED USB PORTS ON THE HUB, one fried Raspberry is enough
.
You don't need a HDMI monitor or keyboard. Just download
Minepeon, which has a web interface to configure and monitor your miner.
And you can ssh into the Raspberry.