Watt's linkage and possible app in rapid prototyping hardware

As Primus tells us: "Jerry was a race car driver." Jeri Ellsworth was both a race car driver and a race car designer. In this segment from a Fat Man & Circuit Girl episode, she talks about the concept behind Watt's linkages she used in a rear suspension system she designed and how this mechanical linkage could be used in rapid prototyping/CNC machines to achieve precision positioning using much less expensive parts.

The linkage model she has in the video might be hard to understand. This animation on Wikipedia might make it easier.

BTW: I finally got to meet my new idol at Maker Faire, but alas, I did not get to hear her talk or to see her booth where she had her Easy Bake Chip Fab set up. I was there to see her present her "homebaked" solar cells to Jérôme Demers, Solarbotics' intern (and MAKE Contributor), for him to build them into a BEAMbot. Can't wait to see what he does with them.


Recent Entries

Comments

Oldest comments listed first.

Posted by: Zee on June 5, 2009 at 5:39 AM

Less theory more practice.

Ok... make some prototypes. I understand the concept but I have no idea how I'd implement it.


Posted by: Simon on June 5, 2009 at 12:54 PM

Whenever I am playing about with linkages or suspension geometry type stuff I always end up falling back to my ancient Lego Technic set to prototype the basic idea just so I can see how it works in real life.

Perhaps it's time to sell the Scalextric set to buy some Mindstorms :)


Posted by: Simon on June 5, 2009 at 1:17 PM

Bad form replying to my own comment I know but seems I missed the Lego boat :( I found only one place locally that has Lego NXT and they are out of stock. Seems ridiculous in the biggest city in NZ there is nowhere I can walk in, hand over my $400NZ or so and just buy a set. How I miss real toy shops like Hamleys and FAO Schwarz!


Posted by: DU on June 5, 2009 at 7:30 AM

great stuff!

Jeri is very impressive. I wish she had her own website/show.

Oh, she kind of does now: http://www.jeriellsworth.com/


Leave a comment


Subscribe to MAKE!Subscribe to MAKE Magazine!

Subscribe today, save 42% and get web access to MAKE free. MAKE Digital Edition is available only to subscribers.

$34.95 / 1 year
(4 Quarterly Issues)

Subscribe now


Void your warranty, violate a user agreement, fry a circuit, blow a fuse, poke an eye out. Make: The risk-takers, the doers, the makers of things... Welcome to Make: Online!


CRAFT Maker Shed Maker Faire MAKE television
MAKE: en Español MAKE: Japan


Check out all of the episodes of Make: television

Make: Science Room

Connect with MAKE

Be a MAKE fan on Facebook MAKE on Facebook
Visit our Facebook page and become a fan of MAKE!
MAKE on Twitter MAKE on Twitter
Follow our MAKE tweets!
MAKE Flickr Pool MAKE on Flickr
Join our MAKE Flickr Pool!
    make_tips on Twitter

    MAKE's RSS feed is here.
    Add MAKE to iGoogle - GoogleGoogle.
    How to add MAKE to your RSS reader - Real simple.
    Add MAKE on FriendFeed




    Maker SHED

    Advertise here with FM.

    Why advertise on MAKE?
    Read what folks are saying about us!

    Click here to advertise on MAKE!



    Subscribe to MAKE Magazine!

    Make: Online authors!

    Gareth BranwynGareth Branwyn
    Senior Editor


    Phillip TorronePhillip Torrone
    Senior Editor
    | AIM | Twitter


    Becky SternBecky Stern
    Associate Editor
    | AIM | Twitter


    Marc de VinckMarc de Vinck
    Contributing Writer
    | AIM | Twitter


    John ParkJohn Park
    Contributing Writer
    | Twitter


    Sean RaganSean Ragan
    Contributing Writer
    | Twitter


    Matt MetsMatt Mets
    Contributing Writer
    | AIM | Twitter


    Dale DoughertyDale Dougherty
    Editor & Publisher
    | Twitter


    Shawn ConnallyShawn Connally
    Managing Editor
    | Twitter


    Goli MohammadiGoli Mohammadi
    Associate Managing Editor

    Kip KayKip Kay
    Weekend Projects
    | AIM | Twitter


    Collin CunninghamCollin Cunningham
    Contributing Writer
    | AIM | Twitter

    Adam FlahertyAdam Flaherty
    Contributing Writer
    | AIM | Twitter



    More contributors: Mark Frauenfelder (Editor-in-Chief, MAKE magazine), Kipp Bradford (Technical Consultant/Writer), Chris Connors (Education), Diana Eng (Guest Author), Peter Horvath (Intern), Brian Jepson (O'Reilly Media), Robert Bruce Thompson (Science Room)

    Suggest a Site!

    Current Podcast

    itunesdl.gif Weekend Project: Making Char Cloth Learn how to make a cheap and effective fire starter made from an old t-shirt. To download The Char Cloth video click here and subscribe in iTunes. See Char Cloth in action with the Fire Piston from William Gurstelle.... More...

    Get the Make: Online sent via email
    Enter your email to receive Make: Online each day:



    MAKE Fascination video series brought to you by Dow

    Make: Education

    Important please read


    Subscribe to MAKE Magazine!

    Recent Posts from the Craft: Blog