Mmmmm…. classes.
Started out with:
2.008 (Make a yoyo)
6.131 (Power electronics)
6.042 (Math for CS majors)
6.003 (Signals and Systems)
6.004 (Computation Structures)
Some HASS class

Now:
2.008 (Make a LED persistence of vision yoyo)
6.131 (Power electronics)
MAS.863 (How to make almost anything)
21M.611 (Foundations of Theater)
Possibly either 6.003 or 6.004, still.

In other words, I was ecstatic when I heard I got into MAS.863 and that flipped me in favor of not double-majoring in 2 and 6 (unless I decide to take an extra semester or something).

==mas.863==
Our first assignment:

• design, make, and document a press-fit construction kit http://academy.cba.mit.edu/classes/computer_cutting/index.html

Trying to think of interesting new ideas, I thought of pressfitting food (sparked by my interest in etching poptarts for nyancat poptart). The hunt for a suitable material is on…
Gingerbread recipe: http://homecooking.about.com/od/cookierecipes/r/blcookie111.htm
Other house-building person: http://web.mit.edu/newsoffice/2008/arch-sass-0703.html, http://cba.mit.edu/events/10.08.FAB6/Sass.pdf
Other materials guy: http://web.mit.edu/bin/cgicso?options=general&query=bredt came up with powder solution for 3d printing

(Other people’s projects, which overlapped with some of my other ideas:

• animal figurines http://fab.cba.mit.edu/classes/MIT/863.10/people/Sarah.Hirschman/02cutters.html
• )

===2.008===

In the meantime, I’ve also been ignoring the present day and contemplating the near future of 2.008. I think we’re supposed to be making paperweight designs or something, but my partner is a but hard to contact, so I’ve fallen back on daydreaming about LED persistence-of-vision yoyo’s. Doesn’t seem to have been done already, surprisitngly. And now for linkspam research:

PoV
Other products

• $5.16 PoV Fan http://www.dealextreme.com/p/customizable-text-handheld-led-message-display-cooling-fan-gadget-3-aa-17850

• Looks a lot like this other fan featured on hackaday:
• http://hackaday.com/2011/08/27/more-pov-fan-message-hacking/
• Teardown: http://hackingwithgum.com/2009/10/06/hacking-the-cenzic-pov-fan/
• large chip is the EEPROM (type of memory), with 4 pin headers to read/write
• there must be a sensor (hall effect sensor? it’s a DC motor) in the circuit somewhere, but not easily discernible (perhaps it’s covered by epoxy?)
• I only have one so I haven’t taken apart my own fan yet
• $35 PoV Top (Luminodisc) http://www.gizmine.com/gzar/luminodisc.shtml

• No teardowns available on the web, no cheap Chinese knockoffs either (and this is from 2009)
• Nice closeup vid: http://www.youtube.com/watch?v=UDzsrCLxPb8

• 2-sided and probably 4x as large as needed for yoyo. Use for component sourcing:  http://drewish.com/blogger/archives/2005/03/17/2sided_pov_toy.html
• uPoV: Further component sourcing ($6): http://rucalgary.hackhut.com/2011/04/26/upov-with-better-firmware-pics-video-and-source/
• Arduino-based: http://www.instructables.com/id/LilyPad-Wrist-Band-POV/
• Tiny! Nano POV: http://tomscircuits.blogspot.com/2009/06/nano-pov.html
• General topic: http://www.opencircuits.com/POV_display
• of the spinny super-quick kind: http://diytronics.blogspot.com/2010/12/cheap-pov-text-display.html

2.008 Yoyos
In order of awesomeness / completeness of online documentation:

• Gallery: http://web.mit.edu/user/s/a/sangkim/Public/Big_files/yoyogallery/yoyogallery.htm
• http://web.mit.edu/2.008/www/yoyogallery/yoyogallery.htm
• M&M http://joshramos.wordpress.com/2-008-design-and-manufacture-ii-yo-yos/, http://kevinrustagi.posterous.com/yoyo-success-class-at-mit
• Earphones http://web.mit.edu/imoyer/www/portfolio/2008/index.html
• MIT (has deliverable) http://web.mit.edu/bubby/www/Sub/2008.html, another one (well doc’d): http://web.mit.edu/jgafford/www/home/yoyopage.htm, and yet another one: http://web.mit.edu/bubby/Public/2.008/Drawings/Assembly/Yoyo_ExplodedAssembly.pdf
• Patriotic (has final presentation) http://elimarcdavis.blogspot.com/p/yo-yo.html
• Minty http://bunnyfish-tamer.com/NewMIT/design/2.008/
• Iron Man http://ultranos.dreamwidth.org/78315.html / http://web.mit.edu/turzaak/www/2.008.html
• Whistling http://www.stephensteger.com/
• Floating astronaut http://www.cposs.org/yoyo.html
• Monkey yoyo http://web.mit.edu/nikolai/www/portfolio/Yoyo.html, http://mingleongdesign.com/design/yoyo.html
• Efficiency http://jaredsartee.com/yoYo.html
• His/her http://www.angelfire.com/super2/czheng/portfolio/yoyo/index.html
• ? http://www.afwidgets.com/portfolio/yo-yos-2/
• Lego? http://martini.mitplw.com/YoYo.html
• Car wheel http://siegelautomation.com/academic.html#
• Another ball game one http://web.mit.edu/lgust/www/projects-IE.html, http://mit.edu/lgust/Public/Planeteers.pdf
• Dragon http://web.mit.edu/yfwu/Public/2.008/yo%20yo%20assem2.PDF
• ? http://mit.edu/magnus89/Public/Classes/2.008%20S10/YoYo/Yoyo%20Exploded%20View.png
• Apple: http://web.mit.edu/ttseng/www/portfolio/yoyo/index.html
• hungry hippo? http://mit.edu/magnus89/Public/Classes/2.008%20S10/2.008%20Yoyo%20Overview.pdf… crazy complicated!
• mario http://scripts.mit.edu/~ducktape/portfolio/2008.php
• ~Electrical: http://web.mit.edu/2.008/www/yoyogallery/light.JPG