<font size="2"><font face="verdana,sans-serif">I usually don't send a ton of replies to a mailing list message like this, but I felt that it was worthy to note that while searching on <a href="http://Alibaba.com">http://Alibaba.com</a> for products, I followed a whim and searched for the key word "levitation" which brought up results containing a number of rare earth magnets, toys and gadgets but what really caught my attention was in the "Alternate energy" section there were a large number of listings for Wind Turbines that claimed to use MagLev technology. It makes sense. I wonder how cost effective it would be to use controlled electromagnets, powered by the turbine to enhance turbine performance rather than using rare earth magnets. I could check to find out exactly what the difference would be but it would take my focus away from my work tonight.</font></font><div>
<font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font size="2"></font><font class="Apple-style-span" face="verdana, sans-serif"><a href="http://www.alibaba.com/products/levitation/--410401----------------Y.html">http://www.alibaba.com/products/levitation/--410401----------------Y.html</a></font></div>
<div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif">BR,</font></font></div>
<div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif">TCS</font></font></div><div><font size="2"><font face="verdana,sans-serif"><br></font></font></div>
<div><font size="2"><font face="verdana,sans-serif"> <br clear="all"></font></font>The information transmitted in this communication is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged information. Any review, retransmission, dissemination, copying or other use of, or taking of any action in reliance upon, this information, or any part thereof, by persons or entities other than the intended recipient, is strictly prohibited and may be unlawful. If you received this in error, please contact the sender immediately and delete and destroy this communication and all copies thereof, including all attachments.<br>
<br><br><div class="gmail_quote">On Wed, Sep 15, 2010 at 10:38 PM, Thomas Stowe <span dir="ltr"><<a href="mailto:stowe.thomas@gmail.com">stowe.thomas@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<font size="2"><font face="verdana,sans-serif">Oh and <a href="http://Mekonik.Wordpress.com" target="_blank">http://Mekonik.Wordpress.com</a> has some decent resources too, including an arduino controlled setup that implements a sensor and a link to some code to handle the setup. Here's the complete tutorial on this particular arduino levitation setup:</font></font><div>
<font face="verdana, sans-serif"><br></font></div><div><font size="2"></font><font face="verdana, sans-serif"><a href="http://mekonik.wordpress.com/2009/03/17/arduino-magnet-levitation/" target="_blank">http://mekonik.wordpress.com/2009/03/17/arduino-magnet-levitation/</a></font></div>
<div><font face="verdana, sans-serif"><br></font></div><div><font face="verdana, sans-serif"><a href="http://mekonik.wordpress.com/2009/03/17/arduino-magnet-levitation/" target="_blank"></a>And some resources taken from this wordpress blog page:<br>
</font><div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div style="font-family:'Times New Roman';font-size:medium">
<p>March 4, 2009 by <a href="http://mekonik.wordpress.com/author/mekonik/" title="Posts by mekonik" target="_blank">mekonik</a></p></div><div style="font-family:'Times New Roman';font-size:medium">
<div><p>I found a couple of interesting <b style="color:black;background-color:rgb(153, 255, 153)">magnetic</b> <b style="color:black;background-color:rgb(255, 153, 153)">levitation</b> projects online when I was doing research for my <a href="http://mekonik.wordpress.com/2009/03/02/my-first-arduino-project/" target="_blank">Arduino magnet <b style="color:black;background-color:rgb(255, 153, 153)">levitation</b> project</a>. I was also pointed out some really cool projects that I didn’t know about by visitors of my blog and of my Arduino forum thread. Here’s the list:</p>
<ul><li><a href="http://de.sevenload.com/sendungen/Computerclub2/folgen/N7wXqna-Folge-20-Computer-club2" target="_blank">http://de.sevenload.com/sendungen/Computerclub2/folgen/N7wXqna-Folge-20-Computer-club2</a> – video from a German podcast (in German), <b style="color:black;background-color:rgb(255, 153, 153)">levitation</b> starts at 16:25, they use ATmega8 and a Hall effect sensor in the base</li>
<li><a href="http://bea.st/sight/levitation/" target="_blank">http://bea.st/sight/<b style="color:black;background-color:rgb(255, 153, 153)">levitation</b>/</a> – combined with a wireless energy transfer, uses ATtiny26, two Hall sensors on the coil, one on each side to compensate for the coil’s field. Also, check out his <a href="http://bea.st/sight/levitation/" target="_blank">wirelessly powered levitating bulb.<br>
</a></li><li><a href="http://amasci.com/maglev/maglev.html" target="_blank">http://amasci.com/maglev/maglev.html</a> – <b style="color:black;background-color:rgb(153, 255, 153)">magnetic</b> cradle, this is a <b style="color:black;background-color:rgb(255, 153, 153)">levitation</b> <em>above</em> electromagnets. Uses an array of coils with hall effect sensors to mimic a <b style="color:black;background-color:rgb(160, 255, 255)">superconductor</b>.</li>
<li><a href="http://sites.google.com/site/simerlab/levitating-globe" target="_blank">http://sites.google.com/site/simerlab/</a> – professional <b style="color:black;background-color:rgb(153, 255, 153)">magnetic</b> <b style="color:black;background-color:rgb(255, 153, 153)">levitation</b> devices, above electromagnets.</li>
</ul></div></div><div><font size="2"><font face="verdana,sans-serif"> </font></font></div><div><font size="2"><font face="verdana,sans-serif">Regards,</font></font></div><div><font size="2"><font face="verdana,sans-serif"><br>
</font></font></div><div><font size="2"><font face="verdana,sans-serif">TCS</font></font></div><div><div class="im"><font size="2"><font face="verdana,sans-serif"><br clear="all"></font></font>The information transmitted in this communication is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged information. Any review, retransmission, dissemination, copying or other use of, or taking of any action in reliance upon, this information, or any part thereof, by persons or entities other than the intended recipient, is strictly prohibited and may be unlawful. If you received this in error, please contact the sender immediately and delete and destroy this communication and all copies thereof, including all attachments.<br>
<br><br></div><div><div></div><div class="h5"><div class="gmail_quote">On Wed, Sep 15, 2010 at 10:33 PM, Thomas Stowe <span dir="ltr"><<a href="mailto:stowe.thomas@gmail.com" target="_blank">stowe.thomas@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<font size="2"><font face="verdana,sans-serif">I think that it might be neat to look into mechanical movement of the parts that would be fixed if you create a device like the others listed. It could controlled by an arduino, done both to see if you can do it with permanent magnets and also be neat to see if you could manipulate them when the device(s) is in a fixed position or maybe while it's moving too. I'm pretty sure that magnetic control of that type might be useful in some way, whether it be in a machining or production process or in robotics. </font></font><div>
<font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif">I'm thinking that it might be neat to create something to manage a plastic extruder, radiate heat into the air rather than relying on a heat sink in equipment that has to cope with heat exchange from an element connected to the body of the equipment or another piece of equipment but relies upon an arm that is susceptible to heat. It might be that you can do something with this in a makerbot.</font></font></div>
<div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif">Or maybe some kind of control mechanism for mechanical movement. What comes to mind when I think of magnetic controlled movement is the magnets that create a friction increase and decrease effect that makes my recumbent exercise bicycle harder and easier to pedal based upon a controller on the bike that controls the distance of magnets from disk that spins when a user pedals on it.</font></font></div>
<div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif">It might be also that a novel application for ball bearings could be developed from it. In fact, I'd hazard to guess that somewhere it already has.</font></font></div>
<div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif">Also... </font></font></div><div><font size="2"><font face="verdana,sans-serif"><br></font></font></div>
<div><font size="2"><font face="verdana,sans-serif">I figured you'd like this and so would the fellow who mentioned diamagnetic effect in materials. From what I gather, diamagnetic effects allow levitation at room temperature. This is a google docs viewed .doc document on the principles of Maglev trains and mentions some interesting facts like that a poweful magnetic field of about 16 tesla must be used to levitate water drops and some living creatures. Is this what you had in mind more than playing with magnets to make legos with metal or magnets attached hover? I find it more fascinating, myself. :)</font></font></div>
<div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif"><span style="font-family:arial"><a href="http://docs.google.com/viewer?a=v&q=cache:GbTynSTQBsYJ:www.digitaledition.org/adveng/AE0201/AE0201_019-028.pdf+microcontroller+superconductor+magnetic+levitation&hl=en&gl=us&pid=bl&srcid=ADGEEShTL3H3MZ1rOQwQWbSUqdmoJ-93kJgkAv-x5AwoxFBlftWrQ2vc7Z5o60qaFBCv5gFxIpONJn5GQ67pkby5q9L38qqZvG0TGDVgZowRwlaaIZclRPVeEd4nsczIn4vKmm3Xb0HK&sig=AHIEtbQ3ftpKeYq7roWquB75be_cFsgSUA" target="_blank">http://docs.google.com/viewer?a=v&q=cache:GbTynSTQBsYJ:www.digitaledition.org/adveng/AE0201/AE0201_019-028.pdf+microcontroller+superconductor+magnetic+levitation&hl=en&gl=us&pid=bl&srcid=ADGEEShTL3H3MZ1rOQwQWbSUqdmoJ-93kJgkAv-x5AwoxFBlftWrQ2vc7Z5o60qaFBCv5gFxIpONJn5GQ67pkby5q9L38qqZvG0TGDVgZowRwlaaIZclRPVeEd4nsczIn4vKmm3Xb0HK&sig=AHIEtbQ3ftpKeYq7roWquB75be_cFsgSUA</a></span></font></font></div>
<div><font size="2"><font face="verdana,sans-serif"><span style="font-family:arial"><a href="http://docs.google.com/viewer?a=v&q=cache:GbTynSTQBsYJ:www.digitaledition.org/adveng/AE0201/AE0201_019-028.pdf+microcontroller+superconductor+magnetic+levitation&hl=en&gl=us&pid=bl&srcid=ADGEEShTL3H3MZ1rOQwQWbSUqdmoJ-93kJgkAv-x5AwoxFBlftWrQ2vc7Z5o60qaFBCv5gFxIpONJn5GQ67pkby5q9L38qqZvG0TGDVgZowRwlaaIZclRPVeEd4nsczIn4vKmm3Xb0HK&sig=AHIEtbQ3ftpKeYq7roWquB75be_cFsgSUA" target="_blank"></a></span> </font></font></div>
<div><font size="2"><font face="verdana,sans-serif">I also found these two pages interesting:</font></font></div><div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif"><a href="http://en.wikipedia.org/wiki/Magnetic_levitation" target="_blank">http://en.wikipedia.org/wiki/Magnetic_levitation</a></font></font></div>
<div><font size="2"><br></font></div><div><font size="2">&</font></div><div><font size="2"><br></font></div><div><font size="2"><a href="http://www.fys.uio.no/super/levitation/" target="_blank">http://www.fys.uio.no/super/levitation/</a></font></div>
<div><br></div><div>Though this second link may seem rather simplistic, have a gander at the pages linked on this page. I feel both a newbie and vetted hacker who's studied magnetic levitation and superconductors can gain something from this, at the very least having some decent MagLev bookmarks to share with others. =)</div>
<div><br></div><div>Anyhow, I hope that this has helped you or helped others with some additional resources in some small way.</div><div><font size="2"><font face="verdana,sans-serif">I have a friend who goes to Noisebridge from time to time (Travis, if anyone knows him) who suggested that I join this list (I live in San Antonio, TX) because you folks bring up topics that I'd be interested in and low and behold, from both the archive and live list, he was right. I hope i can join in and add my two cents, research skills or experiences often and I spend a great deal of time using the 'net and checking my e-mail as I work at home. =)</font></font></div>
<div><font size="2"><font face="verdana,sans-serif"><br></font></font></div><div><font size="2"><font face="verdana,sans-serif">Best Regards,</font></font></div><div><font size="2"><font face="verdana,sans-serif"><br></font></font></div>
<div><font size="2"><font face="verdana,sans-serif">Thomas Stowe</font></font></div><div><font size="2"><font face="verdana,sans-serif"><br clear="all"></font></font>The information transmitted in this communication is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged information. Any review, retransmission, dissemination, copying or other use of, or taking of any action in reliance upon, this information, or any part thereof, by persons or entities other than the intended recipient, is strictly prohibited and may be unlawful. If you received this in error, please contact the sender immediately and delete and destroy this communication and all copies thereof, including all attachments.<div>
<div></div><div><br>
<br><br><div class="gmail_quote">On Wed, Sep 15, 2010 at 9:00 PM, Jonathan Foote <span dir="ltr"><<a href="mailto:jtfoote@ieee.org" target="_blank">jtfoote@ieee.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Don't forget diamagnetism (negative magnetic moments not subject to<br>
Earnshaw's theorem).<br>
<br>
Mike Kan had a little static levitation demo (using pyrolitic<br>
graphite?) at the old space: ask him about it, it's super-cool.<br>
<div><br>
<br>
<br>
On Wed, Sep 15, 2010 at 2:07 PM, David Kelso <<a href="mailto:david@kelso.id.au" target="_blank">david@kelso.id.au</a>> wrote:<br>
</div><div><div></div><div>> I'm trying to levitate some small objects.<br>
> I know you can't have stable equilibrium with permanent magnets, but<br>
> is there a way to do it with microcontroller controlled<br>
> electromagnets?<br>
> This is an area I have no experience in - just had some ideas for a<br>
> project and wanted to see what was possible. Any experiences / reading<br>
> material would be highly appreciated.<br>
><br>
> david<br>
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