rec.autos.simulators

Low cost motion capture hardware

Bruce Sutherlan

Low cost motion capture hardware

by Bruce Sutherlan » Thu, 26 Jun 2003 18:35:22

Hi

I've been reading this group for a while now, but this is my first
post.

I'm interested in digitally recording the motion of a car for the
purpose of a 3D animation. It's a hobby project, so my budget is
limited to around $200 Australian. I'm open to suggestions. I would
like to be able to know the position of the car's chassis in three
dimensions, sampling data at least ten times per second. The
recordings themselves will be a few minutes long at most. The car will
be driving in a relatively flat, open and limited area.

At present, my best idea involves three triaxial accelerometers and a
microprocessor interfacing with a PC using a serial interface. Has
anybody here done this before? What did you use?

All help is greatly appreciated.

Bruce Sutherland.

Doug Millike

Low cost motion capture hardware

by Doug Millike » Fri, 27 Jun 2003 13:50:08

The Valentine Research g-Analyst was the first low cost data system that I
know about, has 3 accelerometers, but the display that comes with it only
plots lateral and longitudinal.  With an external home-built circuit it
was possible to get the vertical accel too.  Long out of production, but
many people still use them.

Here is one link that discusses a newer data box, there are many
companies that supply data systems--
  http://www.scuderiaciriani.com/rx7/radar.html

I think that you might have to do a lot of work yourself if you really want
to stick to that low budget.  Or maybe you can buy a used system, car
racers are always trading up to fancier stuff.

-- Doug Milliken
   www.millikenresearch.com/rcvdpae.html  <--- brand new book


> Hi

> I've been reading this group for a while now, but this is my first
> post.

> I'm interested in digitally recording the motion of a car for the
> purpose of a 3D animation. It's a hobby project, so my budget is
> limited to around $200 Australian. I'm open to suggestions. I would
> like to be able to know the position of the car's chassis in three
> dimensions, sampling data at least ten times per second. The
> recordings themselves will be a few minutes long at most. The car will
> be driving in a relatively flat, open and limited area.

> At present, my best idea involves three triaxial accelerometers and a
> microprocessor interfacing with a PC using a serial interface. Has
> anybody here done this before? What did you use?

> All help is greatly appreciated.

> Bruce Sutherland.

Bruce Sutherlan

Low cost motion capture hardware

by Bruce Sutherlan » Fri, 27 Jun 2003 21:40:43

Thanks for the ideas!
Doug Millike

Low cost motion capture hardware

by Doug Millike » Sun, 29 Jun 2003 05:52:39


> Thanks for the ideas!

Here is a current low-cost product (Competition model is 3-axis):
  http://www.gtechpro.com/

Maybe if you contacted them they would tell you how to get all
three accelerations out of their serial interface?  It's a small
company so they might be interested in your application...

Let RAS know what you learn!

-- Doug
   www.millikenresearch.com/rcvdpae.html  <-- new book


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