Since the SNAPwidget V2 board is looking so good, I thought it should have a mate. So, I made a prototyping board that plugs on to the top of the board.
The holes are 0.100″ spacing and their stride on the board matches the stride of a standard breadboard.
By the way, did you know that the stride of the standard breadboard is based on a 0.300″ pin width of an LS74xx IC?
The EXP-SW-V2 looks like this: