<div dir="ltr">Some feedback...<div><br></div><div>regarding:</div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px">Carl explained that his simulation defines a single move from the entry-point of the square, to the exit-point of the square, or more correctly, either the exit point of the current square to the exit point of the next square, or the entry point of the current square to the entry point of the next square.</span></div><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px"><br></span></div></blockquote><font color="#000000" face="arial, helvetica"><span style="font-size:13.3333px">sorry if I gave the wrong impression. Actually my approach treats the outlines of the squares as noise - it tries to filter them out or ignore them and follow "the real line"...</span></font><div><br></div><div>about:</div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px">the robot (a real physical one) does not actually have to follow curvature of the line: It just has to move from entry points to exit points.</span></div></blockquote><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px"><br></span></div><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px">I've understood the rules interpretation to be that it counts if you enter and exit the square with the line - although, it's not clear to me what that means e.g. if you have a very large robot that is following the line, but doesn't have an obvious part where 'this part of the robot has to stay w/in xyz distance of the line'...</span></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px"><img src="cid:ii_15fbd768d75b53e1" alt="Inline image 1" width="472" height="81"><br></span></div></blockquote><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px"><br></span></div><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px">For that reason, and others :) - I'm thinking that once I get physical - a cool extension would be a gimbal with a laser pointer that can light up the aim point...</span><br></div><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px"><br></span></div><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px">about this</span></div><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px"><br></span></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px">The first sentence says the robot follows a black line. I think the line color change tile was added after that first sentence was written. In any event, it's not always a black line.</span></div></blockquote><div><span style="color:rgb(0,0,0);font-family:arial,helvetica;font-size:13.3333px"><br></span></div><div>giving the rules a little tech writing slack, it does mention this:</div><div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><img src="cid:ii_15fbd785cec8b45b" alt="Inline image 2" width="472" height="193"></div><div><br></div></blockquote>Which is interesting... This suggests that the course could be reformed with any of those condition changes applied to any element. </div><div>At least I've been targeting an algorithm that would handle such variation - </div><div>of course, somebody will have to conquer the course first before somebody changes it...</div><div><br></div><div>- Carl</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Nov 11, 2017 at 5:21 PM, John Swindle <span dir="ltr"><<a href="mailto:swindle@compuserve.com" target="_blank">swindle@compuserve.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font color="black" size="2" face="Arial, Helvetica, sans-serif">
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<div style="font-size:10pt">Folks:</div>
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<div style="font-size:10pt">I enjoyed seeing the 6-can contest today, and seeing the work Carl and Ron are doing on the Challenge Level Line Following contest.</div>
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<div style="font-size:10pt">Carl explained that his simulation defines a single move from the entry-point of the square, to the exit-point of the square, or more correctly, either the exit point of the current square to the exit point of the next square, or the entry point of the current square to the entry point of the next square.</div>
<div style="font-size:10pt"> </div>
<div style="font-size:10pt">If that kind of movement of the robot is acceptable, then the robot (a real physical one) does not actually have to follow curvature of the line: It just has to move from entry points to exit points.</div>
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<div style="font-size:10pt">So, since the LF course layout is a fixed pattern until someone wins, what about just doing odometry or sonar/LIDAR to the room's walls (to correct the odometry, like what Neato does, ignoring obstacles and only looking at walls), and follow the fixed pattern of the course layout using corrected odometry?</div>
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<div style="font-size:10pt">Separately:</div>
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<div style="font-size:10pt">If the specific contest rules don't mention "self-contained", then does that mean the robot can use external resources? Or is there a set of global rules for all contests, covering things like self-containment?</div>
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<div style="font-size:10pt">And just a note: The first sentence of the LF rules state that there are three levels. Then the second sentence states that there are two levels (with a different name). (I do tech writing. I see these things. Especially when they are in adjacent sentences. Especially when they are the first two sentences that I read. Kinda like a JEDEC standard.) <span style="font-size:10pt">I suggest that the second sentence be deleted.</span></div>
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<div style="font-size:10pt">And another item: The first sentence says the robot follows a black line. I think the line color change tile was added after that first sentence was written. In any event, it's not always a black line.</div>
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<div style="font-size:10pt">Best to you all,</div>
<div style="font-size:10pt">John Swindle</div>
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