LED - Rainbow
Demonstrates use of an RGB LED (common cathode) by cycling through rainbow colors. Requires RGB LED on pins that support PWM (usually denoted by ~).
Common Cathode RGB LED. (Arduino UNO)
Basic example with RGB LED connected to pins 6, 5, and 3 for red, green, and blue respectively. The common pin is connected to ground.
Fritzing diagram: docs/breadboard/led-rgb.fzz
Run with:
node eg/led-rainbow.js
var five = require("johnny-five");
var board = new five.Board();
board.on("ready", function() {
var rgb = new five.Led.RGB([6, 5, 3]);
var rainbow = ["FF0000", "FF7F00", "00FF00", "FFFF00", "0000FF", "4B0082", "8F00FF"];
var index = 0;
setInterval(function() {
if (index + 1 === rainbow.length) {
index = 0;
}
rgb.color(rainbow[index++]);
}, 500);
});
License
Copyright (c) 2012, 2013, 2014 Rick Waldron waldron.rick@gmail.com Licensed under the MIT license. Copyright (c) 2014, 2015 The Johnny-Five Contributors Licensed under the MIT license.