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{{NeoPixel-UserGuide-NAV}}
{{NeoPixel-UserGuide-NAV}}
{{ADFImage|NeoPixel-UserGuide-NeoMatrix-01.jpg|640px}}
The Adafruit_NeoMatrix library builds upon Adafruit_NeoPixel to create two-dimensional graphic displays using NeoPixels. You can then easily draw shapes, text and animation without having to calculate every X/Y pixel position. Small NeoPixel matrices are available in the shop. Larger displays can be formed using sections of NeoPixel strip, as shown in the photo above.
In addition to the Adafruit_NeoPixel library (which was already downloaded and installed in a prior step), NeoMatrix requires two additional libraries:
# [https://github.com/adafruit/Adafruit_NeoMatrix/archive/master.zip Adafruit_NeoMatrix]
# [https://github.com/adafruit/Adafruit-GFX-Library/archive/master.zip Adafruit_GFX]
If you’ve previously used any Adafruit LCD or OLED displays, you might already have the latter library installed.
Installation for both is similar to Adafruit_NeoPixel before: unzip, make sure the folder name matches the .cpp and .h files within, then move to your Arduino libraries folder and restart the IDE.
Arduino sketches need to include {{underline|all three headers}} just to use this library:
<nowiki> #include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
#ifndef PSTR
#define PSTR // Make Arduino Due happy
#endif</nowiki>
The extra ifdef/define/endif lines are only needed if you’re using an Arduino Due. Otherwise they can be left out.
{{NeoPixel-UserGuide-TRAILER}}
{{NeoPixel-UserGuide-TRAILER}}