Everloop

Everloop

Device Compatibility

Overview

The following sections below will go over how to control the LED array on your MATRIX Device.

Import Statement

const matrix = require("@matrix-io/matrix-lite");

led

.length

Returns the number of LEDs on a MATRIX device. 

matrix.led.length;

.set()

Allows you to set the colors of each LED. A string, object, array, or an undefined value can be given to this function.

// Valid ways to set each LED
matrix.led.set("blue"); // color name
matrix.led.set("rgb(0,0,255)"); // RGB values
matrix.led.set("#0000ff"); // hex values
matrix.led.set({r:0,g:0,b:255,w:0}); // objects

Passing in an array allows you to set each individual LED color. However, passing an array that's larger than led.length will result in an error. 

matrix.led.set(['red', 'gold', 'purple', {}, , '#6F41C1', 'rgb(0,0,255)', {g:255}]);

Everloop Examples
const matrix = require("@matrix-io/matrix-lite");
// A single string or object sets all LEDs
// Below are different ways of expressing the color blue (number values are from 0-255)
matrix.led.set('blue');
matrix.led.set('rgb(0,0,255)');
matrix.led.set('#0000ff');
matrix.led.set({r:0, g:0, b:255, w:0}); // objects can set white

const matrix = require("@matrix-io/matrix-lite");
// Each line below is a valid way of turning the LEDs off
matrix.led.set('black');
matrix.led.set([]);
matrix.led.set();
matrix.led.set({});

const matrix = require("@matrix-io/matrix-lite");

let everloop = new Array(matrix.led.length).fill({});// Array of black LEDs
everloop[0] = {b:100};

setInterval(()=>{
  let lastColor = everloop.shift();
  everloop.push(lastColor);
  matrix.led.set(everloop);
},50);

const matrix = require("@matrix-io/matrix-lite");

let everloop = new Array(matrix.led.length);

let ledAdjust = 0.0;
if (everloop.length == 35) {
    ledAdjust = 0.51; // MATRIX Creator
} else {
    ledAdjust = 1.01; // MATRIX Voice
}

let frequency = 0.375;
let counter = 0.0;
let tick = everloop.length - 1;

setInterval(()=>{
    // Create rainbow
    for(i = 0; i < everloop.length; i++) {
        let led = {};
        led.r = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*240))*155+100)/10));
        led.g = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*120))*155+100)/10));
        led.b = Math.round(Math.max(0, (Math.sin(frequency*counter)*155+100)/10));

        counter += ledAdjust;

        everloop[i] = led;
    };

    // Slowly show rainbow
    if (tick != 0) {
        for (i = tick; i > 0; i--) {
            everloop[i] = {};
        }
        tick--;
    }

    matrix.led.set(everloop);

},35);

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