Demonstrates use of a BlinkM by cycling through rainbow colors.
Tessel - BlinkM Basick
emonstrates use of a BlinkM, with a Tessel 2, by cycling through rainbow colors.

Run this example from the command line with:
node eg/led-rgb-BLINKM.js
const { Board, Led } = require("johnny-five");
const board = new Board();
board.on("ready", () => {
  // Initialize the RGB LED
  const rgb = new Led.RGB({
    controller: "BLINKM"
  });
  let index = 0;
  const rainbow = ["FF0000", "FF7F00", "FFFF00", "00FF00", "0000FF", "4B0082", "8F00FF"];
  board.loop(1000, () => {
    if (index + 1 === rainbow.length) {
      index = 0;
    }
    rgb.color(rainbow[index++]);
  });
});