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neopixel-8x8-leddance.js
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neopixel-8x8-leddance.js
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var pixel = require("node-pixel");
var five = require("johnny-five");
var board = new five.Board();
var strip = null;
var colorShift = 0;
board.on("ready", function() {
var led = new five.Led(10);
led.brightness(32);
//
// LED Dance
//
// Color shifting can be distracting in this mode. Using the permanence
// of color lets the eye focus on movement. Using solid colors is also nice.
//
// Set `fps` to theoretical max because we want the cycle to go continuously
// and the drawing itself produces enough delay for one frame.
//
var shift = 4; // how fast the colors rotate, 0-255
var fps = 60; // how often to refresh per second, ~60 is max
strip = new pixel.Strip({
board: this,
controller: "FIRMATA",
strips: [ {pin: 6, length: 64}, ],
gamma: 3.6, // 3.6 = night, 2.6 = bright day
});
strip.on("ready", function() {
console.log("👍 Matrix is ready — " + strip.length + " LEDs");
strip.off();
loop(fps);
});
// Patterns are defined in rows of arrays. If the length of any row array is
// longer than strip.length, the excess is ignored automatically.
var patterns = [
// fast wipe
[
[0,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,1],
[1,1,0,0,0,0,1,1],
[1,1,1,0,0,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[0,1,1,1,1,1,1,0],
[0,0,1,1,1,1,0,0],
[0,0,0,1,1,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,1,1,0,0,0],
[0,0,1,1,1,1,0,0],
[0,1,1,1,1,1,1,0],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,0,0,1,1,1],
[1,1,0,0,0,0,1,1],
[1,0,0,0,0,0,0,1],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
],
// slow wipe
[
[0,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,1],
[1,0,0,0,0,0,0,1],
[1,1,0,0,0,0,1,1],
[1,1,0,0,0,0,1,1],
[1,1,1,0,0,1,1,1],
[1,1,1,0,0,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[0,1,1,1,1,1,1,0],
[0,1,1,1,1,1,1,0],
[0,0,1,1,1,1,0,0],
[0,0,1,1,1,1,0,0],
[0,0,0,1,1,0,0,0],
[0,0,0,1,1,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,1,1,0,0,0],
[0,0,0,1,1,0,0,0],
[0,0,1,1,1,1,0,0],
[0,0,1,1,1,1,0,0],
[0,1,1,1,1,1,1,0],
[0,1,1,1,1,1,1,0],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,0,0,1,1,1],
[1,1,1,0,0,1,1,1],
[1,1,0,0,0,0,1,1],
[1,1,0,0,0,0,1,1],
[1,0,0,0,0,0,0,1],
[1,0,0,0,0,0,0,1],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
],
// four quarters circling
[
[0,0,0,0,0,0,0,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[1,0,0,1,0,0,1,0],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,1,0,0,1,0,0,1],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,1,0,0,1,0,0],
[0,0,0,0,0,0,0,0],
],
// single pixel clockwise 3x
[
[0,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,0],
[0,1,0,0,0,0,0,0],
[0,0,1,0,0,0,0,0],
[0,0,0,1,0,0,0,0],
[0,0,0,0,1,0,0,0],
[0,0,0,0,0,1,0,0],
[0,0,0,0,0,0,1,0],
[0,0,0,0,0,0,0,1],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,0],
[0,1,0,0,0,0,0,0],
[0,0,1,0,0,0,0,0],
[0,0,0,1,0,0,0,0],
[0,0,0,0,1,0,0,0],
[0,0,0,0,0,1,0,0],
[0,0,0,0,0,0,1,0],
[0,0,0,0,0,0,0,1],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,0],
[0,1,0,0,0,0,0,0],
[0,0,1,0,0,0,0,0],
[0,0,0,1,0,0,0,0],
[0,0,0,0,1,0,0,0],
[0,0,0,0,0,1,0,0],
[0,0,0,0,0,0,1,0],
[0,0,0,0,0,0,0,1],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
],
// fill pixel bounce
[
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,0],
[1,1,0,0,0,0,0,0],
[1,1,0,0,0,0,0,0],
[1,1,1,0,0,0,0,0],
[1,1,1,0,0,0,0,0],
[1,1,1,1,0,0,0,0],
[1,1,1,1,0,0,0,0],
[1,1,1,1,1,0,0,0],
[1,1,1,1,1,0,0,0],
[1,1,1,1,1,1,0,0],
[1,1,1,1,1,1,0,0],
[1,1,1,1,1,1,1,0],
[1,1,1,1,1,1,1,0],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,0],
[1,1,1,1,1,1,1,0],
[1,1,1,1,1,1,0,0],
[1,1,1,1,1,1,0,0],
[1,1,1,1,1,0,0,0],
[1,1,1,1,1,0,0,0],
[1,1,1,1,0,0,0,0],
[1,1,1,1,0,0,0,0],
[1,1,1,0,0,0,0,0],
[1,1,1,0,0,0,0,0],
[1,1,0,0,0,0,0,0],
[1,1,0,0,0,0,0,0],
[1,0,0,0,0,0,0,0],
[1,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0],
]
];
function loop(framerate) {
var loop = setInterval(function() {
// cycle through all patterns
for (var currentPattern = 0; currentPattern < patterns.length; currentPattern++) {
for (var row = 0; row < patterns[currentPattern].length; row++) {
for (var col = 0; col < 8; col++) {
for (var prev = 0; prev < 8; prev++) {
// draw new pixel.
if (patterns[currentPattern][row][(1*col) + (1*prev)]) {
strip.pixel((1*col) + (1*prev)).color('#053'); // colorWheel(Math.round(col * (255/strip.length) + colorShift))
} else {
strip.pixel((1*col) + (1*prev)).off();
}
}
// update strip
strip.show();
}
// shift colors
colorShift += shift;
}
}
}, 1000 / framerate);
}
// Input any number to get a color value.
//
// The number is the absolute value of modulus of 255, and the
// colors progressively transition in a cycle: r => g => b => r
function colorWheel( WheelPos ){
var r,g,b;
WheelPos = (0 > WheelPos) ? -WheelPos : WheelPos;
WheelPos = 255 - (WheelPos % 255);
if ( WheelPos < 85 ) {
r = 255 - WheelPos * 3;
g = 0;
b = WheelPos * 3;
} else if (WheelPos < 170) {
WheelPos -= 85;
r = 0;
g = WheelPos * 3;
b = 255 - WheelPos * 3;
} else {
WheelPos -= 170;
r = WheelPos * 3;
g = 255 - WheelPos * 3;
b = 0;
}
// tone it down
r = Math.round(r/2);
g = Math.round(g/2);
b = Math.round(b/2);
// returns a string with the rgb value to be used as the parameter
return "rgb(" + r +"," + g + "," + b + ")";
}
// go nuts!
this.repl.inject({
strip: strip,
led: led
});
// cleanup when this program is terminated
this.on("exit", function() {
led.off();
strip.off(); // doesn't work, not sure why
});
});