small updates

README.md

@@ -1,14 +1,30 @@
+# Particle.io and WS2811 wake-up light
+
 Here's a few things that may help you build a wake-up light with a Particle.io Photon and a string of WS2811 ("NeoPixel") RGB LEDs.
 
-For my wake-up light, I have connected 21 WS2811 LEDs to pin D6 of a Particle Photon. The Particle and power leads of the LED string feed off a 5V power adapter. The code that runs on the Particle is in `wakeuplight.ino`. It has two functions:
+<a href="http://www.youtube.com/watch?v=mR70EShMsQE" target="_blank">![The wake-up light on my bed](http://img.youtube.com/vi/mR70EShMsQE/0.jpg)]</a>
+
+## Hardware
+
+For my wake-up light, I have connected 21 WS2811 LEDs to pin D6 of a Particle Photon. The Particle and power leads of the LED string feed off a 5V power adapter. 
+
+## Software
+
+### Particle.io code
+
+The code that runs on the Particle is in `wakeuplight.ino`. It has two example functions:
 
 * Start a 30 minute light sequence, simulating dawn and sunrise, with function `wakeup`
 * Set the LEDs to a specified color, with function `rgbColor` which accepts values of the format `123,45,56` denoting R, G, B bytes.
 
+### An example cronjob
+
 You can start the wake-up light from a cronjob, e.g., at 7 each morning
 
 ```
 0 7 * * 1,2,3,4,5 curl https://api.particle.io/v1/devices/MYDEVICEID/wakeup -d access_token=MYACCESSTOKEN -d "args=blah"
 ```
 
+### An example HTML/JS color controller
+
 You can control the wake-up light's color from a native color picker using the JavaScript in the included `index.html`. Make sure to set your device ID and access token in the HTML file.

index.html

@@ -12,9 +12,9 @@
 			var hexcolor = document.getElementById('colorid').value;
 			var colors = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hexcolor);
 			var s = "" + parseInt( colors[1], 16) + "," + parseInt(colors[2], 16) + "," + parseInt(colors[3], 16)
-      sparkSetPos(s);
+      sparkSetValue(s);
     }
-    function sparkSendValue(newValue) {
+    function sparkSetValue(newValue) {
 			var requestURL = "https://api.spark.io/v1/devices/" +deviceID + "/" + setFunc + "/";
       $.post( requestURL, { params: newValue, access_token: accessToken });
     }