<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 10 (filtered)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;
text-decoration:underline;}
span.EmailStyle17
{font-family:Arial;
color:navy;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=blue id="role_body" bottomMargin=7
leftmargin=7 topmargin=7 rightMargin=7>
<div class=Section1>
<p class=MsoNormal><font size=2 color=navy face=Arial id="role_document"><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Dean: I see why the
breadboard is a bad idea. All I need from the controller is because I need
to interface 1gHz counters to it. </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Ron: I am already done with my sonar
project. All I need to do now is to put it on a board and in a project
box. Also, I did some searching, and the closest thing (<a
href="http://www.repairfaq.org/sam/lr/">http://www.repairfaq.org/sam/lr/</a>) I
came to says that it uses a computer controller.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Heres my theory of operation:</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The controller will be instructed to
trigger a laser pulse (650 nm laser diode), start a timer/counter, wait for the
beam to come back (receiver: OPT101 with concave lens on top of photo-sensitive
area), disable the counter/timer, do some calculations, display results, and
loop.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<div>
<p class=MsoNormal><font size=3 color=navy face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:navy'>___________________<br>
Ray Xu<br>
<a href="mailto:rayxu@tx.rr.com" target="_blank">rayxu@tx.rr.com</a><br>
<a href="http://www.dprg.org" target="_blank">DPRG</a> member<br>
<a href="http://tech.groups.yahoo.com/group/oopic/" target="_blank">OOPic</a>
group member<br>
<a href="http://tech.groups.yahoo.com/group/SeattleRobotics/" target="_blank">Seattle
Robotics</a> group member<br>
<a href="http://rayxublogs.blogspot.com/" target="_blank">My Blog</a><br>
</span></font><font size=1 color=navy face=Arial><span style='font-size:8.0pt;
font-family:Arial;color:navy'>Custom HTML generated signature upon sending</span></font><font
color=navy face=Arial><span style='font-family:Arial;color:navy'> </span></font></p>
</div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> dprglist-bounces@dprg.org
[mailto:dprglist-bounces@dprg.org] <b><span style='font-weight:bold'>On Behalf
Of </span></b>DeltaGraph@aol.com<br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>Friday, July
04, 2008</span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'> </span></font><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>2:59 PM</span></font><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>To:</span></b> dwhall256@gmail.com;
dprglist@dprg.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [DPRG]Wall-E ->
1GHZ computers laser rangefinding</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> </span></font></p>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Dean /
Ray </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Dean,Good
point on Ray's project.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>I guess
the question is to find out what you are trying to do, Ray.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>That
is, if you are attempting to measure time of flight of light you may be talking
an advanced project where specialized hardware/ knowledge might be
needed. </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Reference
designs are a good place to start.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Yeah,
breadboarding in this range would be out.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Might
suggest playing with sonar first. You will learn a good deal and sound's
propagation rate is 1 millionth the speed of light. Master that first. Just Me
Talking.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Ron</span></font></p>
</div>
<p class=MsoNormal style='margin-right:0in;margin-bottom:12.0pt;margin-left:
.5in'><font size=2 color=black face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:black'><br>
<br>
</span></font></p>
<div>
<div class=MsoNormal align=center style='margin-right:0in;margin-bottom:0in;
margin-left:.5in;margin-bottom:.0001pt;text-align:center'><font size=2
color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'>
<hr size=2 width="100%" align=center>
</span></font></div>
<p class=MsoNormal style='margin-right:0in;margin-bottom:0in;margin-left:.5in;
margin-bottom:.0001pt'><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black'>Gas prices getting you
down? Search AOL Autos for fuel-efficient <a
href="http://autos.aol.com/used?ncid=aolaut00050000000007" target="_blank"
title="http://autos.aol.com/used?ncid=aolaut00050000000007">used cars</a>.</span></font></p>
</div>
</div>
</body>
</html>
<P><FONT SIZE=2 FACE="Arial">No virus found in this incoming message.<BR>
Checked by AVG - http://www.avg.com<BR>
Version: 8.0.135 / Virus Database: 270.4.5/1533 - Release Date: 7/3/2008 7:19 PM<BR>
</FONT></P>
<P><FONT SIZE=2 FACE="Arial"> </FONT> </P>