A view of my setup. This is a 30 amp 220 volt HERMS system (heat exchange recirculating mash system) that allows one of my two elements to be on at one time. I use Craftbeerpi to control the Raspberry Pi which controls the brewing process, elements, and pumps. I built the electric control system from ebrewsupply.com and replaced the BCS controller with the Raspberry Pi. All my kettles are from Spike Brewing.