I'm using my board as a mobile/portable solution powered by a 12V batterie pack, in a aluminum housing, transported by hands/shoulder with a strap. When it's being used in laboratory, it's powered by a 12V source, properly stable and grounded. That being, my housing is not necessarily grounded and, in most cases, the user handling the assembled device will be using insulated shoes for their own protection. My question is: should use paper washers for insulating my board from the metallic housing?
