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<div><span style="font-size: 13.3333px;">Maybe Post-It notes.</span></div>
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</span></div>
<div><span style="font-size: 13.3333px;">I see postings where the dye in the Post-It paper transfers to hardwood floors if the paper gets wet, but I don't see any posting where the low-tack adhesive transferred to the floor. (I know you said you'd looked at alternatives online, but I just thought (low probability) maybe this was an option you hadn't considered.)</span></div>
<div><span style="font-size: 13.3333px;"><br>
</span></div>
<div><span style="font-size: 13.3333px;">Modern Marvels or some similar show did a piece on Post-Its. It's kinda a bad adhesive, but kinda special.</span></div>
<div><span style="font-size: 13.3333px;"><br>
</span></div>
<div><span style="font-size: 13.3333px;">While testing Deare John, I put duct tape on my carpet. A few months later, when I peeled the tape off, I learned a lesson. Carpet cleaner removed the residue, but I will never use high-tack tape on carpet again.</span></div>
<div><span style="font-size: 13.3333px;"><br>
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<div><span style="font-size: 13.3333px;">John Swindle</span></div>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----<br>
From: Carl Ott via DPRGlist <dprglist@lists.dprg.org><br>
To: DPRG <dprglist@lists.dprg.org><br>
Sent: Sat, Jan 16, 2021 8:33 am<br>
Subject: Re: [Dprglist] Creating a line following course with tape on wood floor - safe for the floor?<br>
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<div>Another option is to use a vinyl banner as we do for the line following courses these days.</div>
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<div>Our go-to resource is <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://www.stickersbanners.com/">https://www.stickersbanners.com/</a> (Thanks Again Ron Grant!)</div>
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<div>It's $1.75 / square foot, including delivery, with a 2' x 2' minimum and 8' x 50' maximum.</div>
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<div>So a little more expensive than the foam squares - but offering different trade-offs versus foam.</div>
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<div>Just un-roll and place in the same location for repeatability. Then roll it up to store in a closet - ie. so you don't have to keep tape on the floor in your living space / laboratory for weeks on end...</div>
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<div>You can print whatever pattern you want - with
pre-measured waypoints or fiducial markers or something to help with navigation.</div>
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<div>Submit a 300 DPI PNG, and the banner will show up on your doorstep in just a few days. Make your own pattern with an SVG and output a PNG, then you're good to go.</div>
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<div>You can find several ready-to print DPRG line following course samples here</div>
<div><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://github.com/dprg/Contests/tree/master/Line%20Following/Test%20Courses/Challenge%20Test%20Courses">https://github.com/dprg/Contests/tree/master/Line%20Following/Test%20Courses/Challenge%20Test%20Courses</a><br clear="none"></div>
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<div>If your robot drives in a relatively repeatable way, you can save cost by creating a path with several 2 foot strips of banner. Or even cut down to 1 foot strips like the 'airplane friendly' sample does.</div>
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<div>- Carl</div>
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<div class="yiv9283907979yqt3840403781" id="yiv9283907979yqtfd20275">
<div class="yiv9283907979gmail_attr" dir="ltr">On Fri, Jan 15, 2021 at 5:54 PM Karim Virani via DPRGlist <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:dprglist@lists.dprg.org" target="_blank" href="mailto:dprglist@lists.dprg.org">dprglist@lists.dprg.org</a>> wrote:<br clear="none"></div>
<blockquote class="yiv9283907979gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;">
<div dir="ltr">If you're not willing to sacrifice your pretty wood floors to the needs of our future overlords, maybe you've got a priority inversion, said the mad scientist.</div>
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<div class="yiv9283907979gmail_attr" dir="ltr">On Fri, Jan 15, 2021 at 3:36 PM Murray Altheim via DPRGlist <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:dprglist@lists.dprg.org" target="_blank" href="mailto:dprglist@lists.dprg.org">dprglist@lists.dprg.org</a>> wrote:<br clear="none"></div>
<blockquote class="yiv9283907979gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;">On 16/01/21 9:10 am, Patrick R. Michaud via DPRGlist wrote:<br clear="none">
> [...] So to echo Karim, I always use gaffers tape in these floor-taping<br clear="none">
> situations, but it's not a perfect solution. I'd be reluctant to tape<br clear="none">
> my hardwood floor directly, but I also have other options (foam tiles<br clear="none">
> etc) that I can use to create a robot playing surface.<br clear="none">
<br clear="none">
An expensive fix to a damaged wood floor due to tape seems like an<br clear="none">
avoidable situation.<br clear="none">
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On the subject of foam tiles, I just checked our local hardware store and<br clear="none">
they sell black, interlocking 24" square foam tiles for about NZ$9/US$6<br clear="none">
per square meter. It looks like KMart sells a four-pack of them in four<br clear="none">
colors for $12, a four pack of the black ones for $11. You pay extra for<br clear="none">
color.<br clear="none">
<br clear="none">
In the US, where everything is more available, I checked <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://foamtiles.com/">foamtiles.com</a><br clear="none">
(flooring geeks!) in Meza, AZ, and they sell tiles with rubber tops,<br clear="none">
carpet tops, wood patterns, and martial arts mats (e.g., 2x2' US$7.56,<br clear="none">
3'x3' US17 per tile). Male or female beveled edge, beveled corners, lots<br clear="none">
of options. It looks like the low end of their line of interlocking tiles<br clear="none">
runs about US$1.20/sq. ft, e./g.<br clear="none">
<br clear="none">
<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://www.foamtiles.com/interlocking-tile/foam/12-eco-soft-tile.html">https://www.foamtiles.com/interlocking-tile/foam/12-eco-soft-tile.html</a><br clear="none">
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They're don't ship outside of the US so I'd have to find a different<br clear="none">
supplier, but it seems these foam tiles are not hard to source.<br clear="none">
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So maybe the easiest solution is to use these interlocking foam tiles.<br clear="none">
They'd provide good traction and could be taken apart and stored when not<br clear="none">
in use. White tape on black tile would do fine. Or black tape on pink. It<br clear="none">
would even be possible to print out the DPRG line following course, spray<br clear="none">
glue it to a set of tiles, then laboriously cut the zig zags with an xacto<br clear="none">
knife. But I'm not suggesting anyone tackle that -- it seems a particular<br clear="none">
sort of torture. But there's a solution to that too, though I have no idea<br clear="none">
what it'd cost: custom mats from SoftTiles.com:<br clear="none">
<br clear="none">
<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://softtiles.com/pages/corporate-projects">https://softtiles.com/pages/corporate-projects</a><br clear="none">
<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://i.shgcdn.com/23d74f3e-4e97-4830-a95a-c01c83aefcc6/-/format/auto/-/preview/3000x3000/-/quality/lighter/">https://i.shgcdn.com/23d74f3e-4e97-4830-a95a-c01c83aefcc6/-/format/auto/-/preview/3000x3000/-/quality/lighter/</a><br clear="none">
<br clear="none">
[Legal Notice: I hold no fiduciary interest in <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://foamtiles.com/">foamtiles.com</a> or any other<br clear="none">
foam tile wholesale or retail establishment.]<br clear="none">
<br clear="none">
I might see if they sell these at the local KMart here in NZ. Two four<br clear="none">
packs would be the size of a sheet of plywood and cost about $22.<br clear="none">
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Nice solution.<br clear="none">
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Cheers,<br clear="none">
<br clear="none">
Murray<br clear="none">
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...........................................................................<br clear="none">
Murray Altheim <murray18 at altheim dot com> = = ===<br clear="none">
<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.altheim.com/murray/">http://www.altheim.com/murray/</a> === ===<br clear="none">
= = ===<br clear="none">
In the evening<br clear="none">
The rice leaves in the garden<br clear="none">
Rustle in the autumn wind<br clear="none">
That blows through my reed hut.<br clear="none">
-- Minamoto no Tsunenobu<br clear="none">
<br clear="none">
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