Sojourner Explorer Blueprints
Lester
than internal electronics. (I'll handle that part myself!)
Thanks,
Lester
Shane Bouslough
>
> Does anyone know if they exist? I'm more interested in chassis design
> than internal electronics. (I'll handle that part myself!)
I am in a similar situation. I have looked high and low, and
even emailed a few people at NASA who are mentioned in some of
the technical articles that are available online.
About as close as I have come so far, are the drawings on JPL's
patent:
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1='D437,255'.WKU.&OS=PN/D437,255&RS=PN/D437,255
Click on the images link to get the actual pages.
I have some other links to technical papers that I found useful since
the describe the mechanics of the robot. I was particularly
interested
in the actual construction of the rocker bogie hardware. None
included
mechanical drawings, however. If you are interested in these, let me
know.
I am also interested in any information you may have gathered, and
what
your end project is going to be.
-Shane
Sir Charles W. Shults III
approximate dimension on it anywhere and you can figure the rest out, even with
a ruler. Hint: once you have approximations, pick sizes that match available
stock fairly closely and you will have most of the battle won.
Cheers!
Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip
dan michaels
> than internal electronics. (I'll handle that part myself!)
>
Lester, several years ago Mattel had a Soujourner toy - maybe you can
find one on e-bay, etc:
http://mars.jpl.nasa.gov/MPF/newspio/mpf/releases/mattel3.html
http://techtransfer.jpl.nasa.gov/successstories/education/mars-rover.html
Rich Ottosen converted one:
http://www.rhoent.com/plodder.htm
- dan michaels
www.oricomtech.com
=============================
Shane Bouslough
>
> That drawing is more than enough- now all you need is a picture with an
> approximate dimension on it anywhere and you can figure the rest out, even with
> a ruler. Hint: once you have approximations, pick sizes that match available
> stock fairly closely and you will have most of the battle won.
True, which is what I have been doing. However it can get more
complex that simply measuring the components. For example, what
isn't obvious (at least it wasn't to me at first) is that the two
rocker-bogies need to be connected internally via a differential
otherwise the WEB (Warm Electronics Box) would fall to the ground
about that axis.
Also, it is not necessary to reproduce every aspect of the shapes
of the rocker-bogie components because a lot (such as the bend in
the middle member) are an artifact of the constraints on how the
bot was stored during transit from Earth to Mars.
-Shane
Clifford Heath
> what
> isn't obvious (at least it wasn't to me at first) is that the two
> rocker-bogies need to be connected internally via a differential
> otherwise the WEB (Warm Electronics Box) would fall to the ground
> about that axis.
While there may be a differential, it isn't needed. Or at least, it's
external, in the form of the rocker. See the rocker in the picture at
... oh da&%, the URL is stale, it was at:
<http://powerweb.lerc.nasa.gov/DOC/pathfinder/images/JPL_27914B.JPG>
I have this picture still, could email it.
Anyhow, I've built this in Lego with a rocker and also with a
differential, both work, but the rocker matches the photo.
You can see my Lego at <http://homes.managesoft.com.au/~cjh/lego/>.
Clifford Heath, cjh at ManageS0ft dot com
Lester
expected!
Rich: The Mattel's are actual matchbox sized vehicles. Scientific
toys made an Explorer toy with a wired remote control which would have
been PERFECT for what I wanted to do... but they appear to have fallen
off of the production map years ago. (And I haven't been able to find
them anywhere... even KB Toys Outlet).
For a glimpse of it, after a few mods, check out:
http://www.gorobotics.net/articles/article.php?name=marsrover
It's misleadingly titled, but he looks like he is on the right track.
:-)
Thanks again for all of your help!
Lester