Datasheet

We refer to this layout as row major and progressive. Row major means the pixels are arranged in

horizontal lines (the opposite, in vertical lines, is column major). Progressive means each row

proceeds in the same direction. Some matrices will reverse direction on each row, as it can be

easier to wire that way. We call that a zigzag layout.

However…for this example, we want to use the shield in the “tall” direction, so the Arduino is

standing up on the desk with the USB cable at the top. When we turn the board this way, the matrix

layout changes…