2434 Datasheet 2328, 2434, 2734 | P7-P8

DotStar Matrices

We also sell these lovely DotStars in MATRIX form! This gives you a grid of LEDs for 2D

blinkin-fun.

You can easily turn a flexible DotStar matrix into your very own glowing canvas by using

the Adafruit DotStarMatrix library (http://adafru.it/iZf).

We have the flexible matrices in multiple size:

Rectangular 8x32 (256 pixels) (http://adafru.it/2736)

Square 16x16 (256 pixels) (http://adafru.it/2735)

Square 8x8 (64 pixels) (http://adafru.it/2734)

To get going, install the Adafruit DotStarMatrix library (http://adafru.it/iZf)

You can download a zip of the latest DotStarMatrix library by clicking below

Download Adafruit_DotStarMatrix

http://adafru.it/iZA

Unzip and rename the resulting folder “Adafruit_DotStarMatrix”, making sure it contains

Adafruit_DotStarMatrix.cpp. Move that folder to your ArduinoSketchBook/Libraries folder

and restart the Arduino IDE. Library installation is a frequent stumbling block…if you need

assistance, our All About Arduino Libraries (http://adafru.it/dit) guide spells it out in detail!

You'll also need the Adafruit_GFX library, if you dont have it already, download it from

here (http://adafru.it/aJa). Or by clicking below for the zip

Download Adafruit_GFX

http://adafru.it/aJa

Once you have both libraries, restart the IDE and open up the File->Examples-

>Adafruit_DotStarMatrix->matrixtest example, and adjust the data/clock lines to what

you're planning on using

#define DATAPIN 4

#define CLOCKPIN 5

Then, depending on your matrix size & style, you'll have to also adjust this line:

Adafruit_DotStarMatrix matrix = Adafruit_DotStarMatrix(

8, 8, DATAPIN, CLOCKPIN,

DS_MATRIX_TOP + DS_MATRIX_RIGHT +

DS_MATRIX_COLUMNS + DS_MATRIX_ZIGZAG,

DOTSTAR_BGR);

The first four numbers are easiest to set, the first 2 are the size of the matrix, just put in 8, 8

or 16, 16 or whatever. The Data and Clock pins are also set.

The argument to the object is a bunch of 'flags' letting it know which way the matrix goes.

You will likely have to mess with these a little depending on how your matrix is set up.

Chances are you want to use:

DS_MATRIX_PROGRESSIVE for purchased flexible matrices, rather than

DS_MATRIX_ZIGZAG which is often used for DIY matrices

DOTSTAR_BGR for almost all matrices, Dotstars had a 'color swap' but that was in

late 2014 so try this one first

Then switch around DS_MATRIX_TOP/DS_MATRIX_BOTTOM,

DS_MATRIX_RIGHT/DS_MATRIX_LEFT and

DS_MATRIX_ROWS/DS_MATRIX_COLUMNS until you get the orientation and pixel

direction you want.

P1-P3 P4-P6 P7-P8

2434

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Screws & Fasteners 8-32 .500 SHLDR SCRW

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