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    <title>robots.net blog for Opal</title>
    <link>http://robots.net/person/Opal/</link>
    <description>robots.net blog for Opal</description>
    <language>en-us</language>
    <generator>mod_virgule</generator>
    <pubDate>Fri, 24 May 2013 07:27:42 GMT</pubDate>
    <item>
      <pubDate>Mon, 12 May 2008 21:29:59 GMT</pubDate>
      <title>12 May 2008</title>
      <link>http://robots.net/person/Opal/diary.html?start=1</link>
      <guid>http://robots.net/person/Opal/diary.html?start=1</guid>
      <description>Ah, btw...&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; I'm planning on joining the DPRG...I wasn't really going to&#xD;
say anything cuz I didn't think anyone would care, but I&#xD;
just realized that the webmasters of this site were or are in&#xD;
the DPRG! :P&#xD;
I'm definately joining by August, so I hope to see some of&#xD;
you guys from the DPRG then. :P Cya around.</description>
    </item>
    <item>
      <pubDate>Mon, 12 May 2008 21:24:08 GMT</pubDate>
      <title>12 May 2008</title>
      <link>http://robots.net/person/Opal/diary.html?start=0</link>
      <guid>http://robots.net/person/Opal/diary.html?start=0</guid>
      <description>Designing Stage for RIP (Robot in Progress that is probably&#xD;
doomed to die)&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; Since I'm building up money for this&#xD;
robot right&#xD;
now, I'm&#xD;
spending most of my free time designing.&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; I'm using Google Sketchup to design.&#xD;
Sorry, I&#xD;
don't have&#xD;
$10,000 for Autodesk or AutoCAD. :P&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; The robot will use differential&#xD;
drive; Two&#xD;
wheels in the&#xD;
back, with a castor of some sort in the front.&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; I'm using the Arduino Diecimila&#xD;
board to&#xD;
make my&#xD;
robot. The&#xD;
circuit is already designed, and is fairly simple due to my&#xD;
poor knowledge of circuits.&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; I thought I might just throw a IR&#xD;
Rangefinder sensor&#xD;
mounted&#xD;
on a servo on the robot and call it a day; But it seemed far&#xD;
too boring. And so, I'm buying all sorts of...fun stuff.&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; I'm buying a Pyroelectric sensor,&#xD;
which will&#xD;
detect&#xD;
humans&#xD;
or my cat, whichever I prefer. :P&#xD;
I'm also throwing in a sound sensor and CMOS camera if I can&#xD;
implement it properly with my horrible knowledge of circuits.&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; All of these sensors (minus the&#xD;
sound&#xD;
sensor)&#xD;
will be&#xD;
mounted in some way onto a head. Yes, like a robot head.&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; The head will be run by two&#xD;
motors; a&#xD;
360 degree&#xD;
servo to&#xD;
rotate it left and right, and a sub-micro servo to tilt the&#xD;
head up and down.&#xD;
Designing the head has been a pain; I've had to go back and&#xD;
forth between what my design would look like and what's on&#xD;
http://mcmaster.com . If somebody could recommend to me a&#xD;
site that can cut HPDE (High Density PolyEthlane)  to custom&#xD;
lengths, that would be appreciated. ;)&#xD;
I now have the design, the question is what I'm going to put&#xD;
on to be the cover for the head. Glass is too expensive; I&#xD;
can't find the right dimensions for clear or translucent&#xD;
tinted plastics. Oh well, I'll figure it out eventually.&#xD;
&#xD;
&lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; &lt;p&gt; Anyway...&#xD;
EARLY Designs: &lt;p&gt;&#xD;
&lt;img src="http://opalassociation.net/img/robot%201_2.png"&gt;&#xD;
&lt;p&gt;</description>
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