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Subject: 
Re: Avoiding objects
Newsgroups: 
lugnet.robotics
Date: 
Thu, 11 Dec 2003 19:57:05 GMT
Viewed: 
1030 times
  
In lugnet.robotics, "Roger Waters" <rogerwaters@fastmail.fm> wrote:
Hello All,

I'm new to the world of Mindstorms and to this list, and I have a
question.

Upgrading the Roverbot, which backs up when the bumpers feel something,
is there a way of avoiding walls and objects on the floor.  What is the
best way to do this?  How good is IR? Are there any other sensors out
there (made by Lego or others) that would allow the robot to detect an
obstacle before it actually hits it?

I haven't dabbled with Mindstorms for a while, but I had pretty good luck using
the IR on the RCX in combination with a light sensor.  Basically, have the RCX
continously send out an IR message.  The light sensor can detect the IR light
when it bounces off from an object, such as a wall.  The only place I've had
trouble with this setup was if the `bot approached a very thin object, or an
object that was non-reflective (my black shoes for instance).

I've also tried using two light sensors to enable the `bot to tell what
direction the reflection is coming from, but I haven't had much success there.

-Elroy



Message is in Reply To:
  Avoiding objects
 
Hello All, I'm new to the world of Mindstorms and to this list, and I have a question. Upgrading the Roverbot, which backs up when the bumpers feel something, is there a way of avoiding walls and objects on the floor. What is the best way to do (...) (21 years ago, 11-Dec-03, to lugnet.robotics)

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