DPRG mailing list archives: [DPRG] Re: Interesting robot to check out...

Mon May 28 14:51:18 CDT 2007

Kenneth,

You continue to amaze me.  The quality and _quantity_ of work you
turn out in addition to your 90+ hours a week real-job are an
inspiration (and somewhat humbling to a congentile slacker such
as myself ;)

The four wheel ProtoBot is a skid steered platform?  Do you
run a separate PID controller for each wheel?

S.Rainwater has also used some beautiful laser cut parts for his
treaded robot.  The price is right, turn around is quick, and the
parts are first rate.

Ron Grant of the DPRG has built and refined a similar laser CNC device
in his garage (living room?) and made some really nice parts for
the group as well as trophies for our contests (anybody have any pictures?)
and this really seems like the wave of the future in one-off fabrications.

best,
dpa

> 
> Hello David,
> 
> The robot is coming along.  Given the extreme hours working for "the man",
> there has been no progress in ~3-mo.  Leading up to that point the progress
> was good.  Today, in the studio is the first chance I am getting to really
> play in ever so long...
> 
> Given the massive scope of the six wheeled robot project I decided to build
> a simplified test platform to test out controllers, power supplies, motor
> drivers, software and algorithmic solutions.  The CAD depiction below shows
> the test platform. All of the circuit boards for this design are completed
> and in various states of population.  There are only 8 mechanical components
> remaining to be fabricated prior to complete assembly, minus some final 2'nd
> ops...
> 
> I have also been taking advantage of Pololu's laser cutting service on this
> project.  Given that I expect this one to get quite a bit of outdoor
> operation I have taken some time in an attempt to keep FOD out of the CCAs.
> Some of the subassemblies are already assembled.  I will snap some photos
> this evening and post them to the web site.  It is all just a matter of
> time.  Work on the robot or document the progress.  I try to spend a
> reasonable amount of time on both but that is a struggle :)
> 
> http://nikita.argia.net/kmaxon/proto_bot_cad27.gif
> 
> The beautiful part about this robot is that the construction and components
> are relatively simple compared to the 6 wheeled robot, and much of the
> technology from this robot test bed will lift directly into that one.  This
> fact then leads to the name of this robot, ProtoBot....
> 
> Currently I do have pictures of most of the parts for this robot on my web
> site.   I'll try to finish that out tonight and post a few pictures of some
> of the subassemblies as they sit today.
> 
> Oh yes, some time back we chatted about the overall size of this robot.
> Unfortunately as the various components were sized it grew and grew.  The
> finished foot print will be ~24" front to back by ~30" side to side and have
> a Z elevation of ~46".
> 
> -Kenneth
> 
> 
> -----Original Message-----
> From: dprglist-bounces at dprg.org [mailto:dprglist-bounces at dprg.org]On
> Behalf Of dpa
> Sent: Monday, May 28, 2007 11:19 AM
> To: dprglist at dprg.org
> Subject: [DPRG] Re: Interesting robot to check out...
> 
> 
> Kenneth,
> 
> Very interesting.  Are you contemplating a Linux powered robot?
> 
> Any progress to report on your own 6-wheel robot project.
> 
> best regards,
> dpa
> 
> 
> >
> >
> > Hello David and Group,
> >
> > I wound up on the west coast stuck working in Oregon for just short of 2
> > months.  Upon returning I have worked 96.5hrs this week and 92hrs last
> week.
> > Sigh... Not much time for robotics.  Tomorrow will be my first real day to
> > head back to working on the robot.
> >
> > I thought I would take a minute and share the site I stumbled across on
> the
> > web.  If this has been seen before, then please  forgive the repost.  If
> > not, give this a look.  The articulated body is an interesting / different
> > way to do things...
> >
> > http://linuxdevices.com/articles/AT8656331847.html
> 
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> 
> 