Anet A8 Electronics Case Mosfet Stepdown (Octopi, Mosfet, Stepdown + Mainboard)

Another remix to add a adjustable Step Down Module 4.5V-28V (https://www.banggood.com/Mini-MP1584EN-DC-DC-BUCK-Adjustable-Step-Down-Module-4_5V-28V-Input-0_8V-20V-Output-p-1096121.html?rmmds=myorder&cur_warehouse=CN) to power the OctoPi.