Datasheet

Write a sketch

At this point we've assembled a NeoMatrix and Fadecandy Controller, we tried some

examples, and we put some materials in front of the LEDs to see how they look. Now let's

try making a Processing sketch from scratch.

In this example, we'll make a simple particle system that creates expanding wavefronts in

response to mouse gestures.

Here's how it looks:

(Direct link to the video (http://adafru.it/cWl))

So that's shiny. Let's write some code!

To get the OPC.pde library (http://adafru.it/cW9) easily, we'll start by opening the template

example included in Fadecandy's processing examples folder. Then we can save that

example with a new name. The template starts you out with just enough code to connect to

fcserver:

// This is an empty Processing sketch with support for Fadecandy.

OPC opc;

void setup()

{

size(600, 300);

opc = new OPC(this, "127.0.0.1", 7890);

// Set up your LED mapping here

}

void draw()

{

background(0);

// Draw each frame here

}

First, let's set this up to talk to an 8x8 pixel NeoMatrix. Change the setup() to look like this:

void setup()

{

size(500, 500, P3D);