Additional LED examples

eg/led-rainbow.js

@@ -0,0 +1,31 @@
+var five = require("johnny-five"),
+  Spark = require("../lib/spark"),
+  keypress = require("keypress"),
+  board;
+
+
+// Create Johnny-Five board connected via Spark
+board = new five.Board({
+  io: new Spark({
+    token: process.env.SPARK_TOKEN,
+    deviceId: process.env.SPARK_DEVICE_ID
+  })
+});
+
+board.on("ready", function() {
+  var rgb, rainbow, index;
+
+
+  // Initialize the RGB LED
+  rgb = new five.Led.RGB(["A5", "A6", "A7"]);
+  rainbow = ["FF000", "FF7F00", "00FF00", "FFFF00", "0000FF", "4B0082", "8F00FF"];
+  index = 0;
+
+  setInterval(function() {
+    if (index + 1 === rainbow.length) {
+      index = 0;
+    }
+    rgb.color(rainbow[index++]);
+  }, 500);
+
+});

eg/led-rgb.js

@@ -1,6 +1,6 @@
 var five = require("johnny-five"),
   Spark = require("../lib/spark"),
-  keypress = require('keypress'),
+  keypress = require("keypress"),
   board;
 
 
@@ -19,7 +19,7 @@ board.on("ready", function() {
 
 
   // Initialize the RGB LED
-  var a = new five.Led.RGB({
+  var led = new five.Led.RGB({
     pins: {
       red: "A5",
       green: "A6",
@@ -35,15 +35,15 @@ board.on("ready", function() {
   //   green: g,
   //   blue: b
   // }
-  //var a = new five.Led.RGB(["A5","A6","A7"]);
+  //var led = new five.Led.RGB(['A5','A6','A7']);
 
   // Turn it on and set the initial color
-  a.on();
-  a.color("#FF0000");
+  led.on();
+  led.color("#FF0000");
 
   // Listen for user input to change the RGB color
   process.stdin.resume();
-  process.stdin.setEncoding('utf8');
+  process.stdin.setEncoding("utf8");
   process.stdin.setRawMode(true);
 
   var keymap = {
@@ -53,17 +53,16 @@ board.on("ready", function() {
     w: "#FFFFFF"  // white
   };
 
-  process.stdin.on('keypress', function (ch, key) {
-    
-    if ( !key ) {
+  process.stdin.on("keypress", function(ch, key) {
+
+    if (!key) {
       return;
     }
 
     if (keymap[key.name]) {
-      a.color(keymap[key.name]);
-      a.on();
+      led.color(keymap[key.name]);
     } else {
-      a.off();
+      led.off();
     }
 
   });

eg/led.js

@@ -0,0 +1,104 @@
+var five = require("johnny-five"),
+  Spark = require("../lib/spark"),
+  temporal = require("temporal"),
+  board;
+
+
+// Create Johnny-Five board connected via Spark
+board = new five.Board({
+  io: new Spark({
+    token: process.env.SPARK_TOKEN,
+    deviceId: process.env.SPARK_DEVICE_ID
+  })
+});
+
+board.on("ready", function() {
+  var led = new five.Led(process.argv[2] || "D0");
+
+  this.repl.inject({
+    led: led
+  });
+
+  temporal.queue([{
+      delay: 0,
+      task: function() {
+        // on()
+        //
+        // Turns the led on
+        led.on();
+        console.log("led on");
+      }
+    }, {
+      delay: 1000,
+      task: function() {
+        // off()
+        //
+        // Turns the led off
+        led.off();
+        console.log("led off");
+      }
+    }, {
+      delay: 3000,
+      task: function() {
+        // strobe()
+        //
+        // Strobe the led (on/off)
+        led.strobe();
+        console.log("led strobe");
+      }
+    }, {
+      delay: 3000,
+      task: function() {
+        // stop()
+        //
+        // Stop the pulse
+        led.stop();
+        console.log("led stop");
+
+        // If you want to make sure it's off
+        // in case it stopped it while on
+        led.off();
+      }
+    }, {
+      delay: 1000,
+      task: function() {
+        // fadeIn()
+        //
+        // Fade in the led
+        led.fadeIn();
+        console.log("led fadeIn");
+      }
+    }, {
+      delay: 3000,
+      task: function() {
+        // fadeOut()
+        //
+        // Fade out the led
+        led.fadeOut();
+        console.log("led fadeOut");
+      }
+    }, {
+      delay: 3000,
+      task: function() {
+        // brightness ()
+        //
+        // set analog brightness (0-255)
+        led.brightness(100);
+        console.log("led brightness");
+
+        // Exit gracefully
+        process.exit(0);
+      }
+    }
+  ]);
+
+
+});
+
+// @markdown
+// To make use of `Led` methods like `fade`, `pulse`, `animate`, you'll need to
+// wire an LED to a PWM pin (A0, A1, A4, A5, A6, A7, D0 and D1).
+// If you use a different pin, make sure to run the script with the correct pin number:
+//
+// `node eg/led.js [pinNumber]`
+// @markdown