Quantity   Component name
1 × Arduino Mega 2560 Currently upgrading from Uno to Mega 2560
2 × Brewing pumps I Got March pumps. Adding second pump for counterflow action
2 × 8 x SPDT relay module
2 × SSR relay And proper heatsinking
2 × Heating elements Water tank and boil tank
2 × Solenoids For cold water entrance
10 × Electric ball valves assortment of 2-way and 3-way ball valves for hot water and wort
3 × DS18B20 Temperature sensor Water tank, grist tank and boil tank
1 × Electronic components Resistors, transistors, optocouplers, diodes
1 × Raspberry Pi This is gonna host serial connection and GUI server