Datasheet

the Adafruit_LEDBackpack library folder your

arduinosketchfolder

/libraries/ folder. You may need to create

the

libraries

subfolder if its your first library.

You'll also need to download the Adafruit GFX library (https://adafru.it/aJa) that provides the graphics drawing routines.

Follow the same instructions as above, but with Adafruit_GFX instead of Adafruit_LEDBackpack.

Restart the IDE.

Once you've restarted you should be able to select the File->Examples->Adafruit_LEDBackpack->matrix88 example

sketch. Upload it to your Arduino as usual. You should see a basic test program that goes through a bunch of different

drawing routines

Once you're happy that the matrix works, you can write your own sketches. The 8x8 matrix supports everything the

Adafruit GFX library - drawing pixels, lines, rectancles, circles, triangles, roundrects, and small bitmaps. For more details

check out the GFX page which will detail all of the GFX routines (https://adafru.it/aPx).

All the drawing routines only change the display memory kept by the Arduino. Don't forget to call writeDisplay() after

drawing to 'save' the memory out to the matrix via I2C.

There are also a few small routines that are special to the matrix:

setBrightness(

brighness

)- will let you change the overall brightness of the entire display. 0 is least bright, 15 is

brightest and is what is initialized by the display when you start

blinkRate(

rate

) - You can blink the entire display. 0 is no blinking. 1, 2 or 3 is for display blinking.