One unharnessed benefit of my electric brewing setup was precise temperature control. So I took a weekend off to fabricate a PID based control panel. I wanted something compact that could sit on the countertop and be stored away when not in use. This is designed to control only one of the two heating elements during mash as well as the pump.
I began with a extruded aluminum box, commonly used for computer hardware housing. Did a quick mock up to make sure all the components would fit.
And set out to machine the face plates
Fit worked out nicely
And off to its maiden brewday.