Modifications

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…

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…

{{ADFImage|NeoPixel-UserGuide-NeoMatrix-12.jpg|640px}}

{{ADFImage|NeoPixel-UserGuide-NeoMatrix-12.jpg|480px}}

Now the first pixel is at the '''top right'''. Pixels increment top-to-bottom — it’s now '''column major'''. The order of the columns is still '''progressive''' though.

Now the first pixel is at the '''top right'''. Pixels increment top-to-bottom — it’s now '''column major'''. The order of the columns is still '''progressive''' though.