Hardware Reference
In-Depth Information
Connecting a display using the SPI
interface
While the serial display is interesting, it has some limitations. It is difficult to display pic-
tures or graphics, and it is somewhat slower than other interfaces available to you. So, let's
add a display with a different communications interface. The following image shows a pic-
ture of a small, 1.8 inch LCD module with a micro SD card interface that can be connected
to your Arduino:
This particular display is available from a company called SainSmart; it is available direc-
tly from the company or other online retailers such as
Amazon.com
. There are others that
are very similar. Finding support for these displays can be difficult, as the interface is signi-
ficantly more complex; so, check to make sure the libraries are also supplied with the dis-
play. To connect to this display, perform the following steps:
1. The first step is to connect the display to your Arduino. The following image
shows a picture of the back of the display that will help you connect to the SPI in-
terface on your Arduino:
