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 Robotics / 5883
5882  |  5884
Subject: 
A RCX 'Beacon'
Newsgroups: 
lugnet.robotics
Date: 
Thu, 29 Jul 1999 13:49:25 GMT
Original-From: 
Cwikla, Brian <brian.cwikla@bestAVOIDSPAMbuy.com>
Viewed: 
587 times
  
Well, I'm not an expert when it comes to small electronics and making them,
so I thought I would post this question to this list.

After working with the RCX for nearly a year now, I've found a tool/sensor
that I would really like to have, but no idea how I could implement it.

Basically, it works like this.  It would involve a home-brew sensor and a
home-brew module.  The sensor would attach to the input port on the RCX.
The module can be placed anywhere and emits a pulse/beep/signal.  The sensor
on the RCX can pick up that pulse/beep/signal and be able to tell the
general direction it is coming from.  It would send a number from 0 - 360 to
the RCX to tell it in degrees what direction it is coming from and then
through programming in the RCX, it could adjust it's direction to go towards
that signal.

I know there could be factors like signal bouncing off of walls and giving
wrong impressions as to direction to the RCX and such....  but is something
like this possible?  Or is there currently any method that someone is using
to always navigate to a certain point/area?  Any help would be appreciated!
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics



Message has 3 Replies:
  Re: A RCX 'Beacon'
 
(...) Brian, I share your dream. It's a great idea. Surprisingly enough just this morning I wrote an email to Al Thiele asking for the same thing. I'm obsessed by the problem of knowing the robot position. I had some success experimenting odometry, (...) (25 years ago, 29-Jul-99, to lugnet.robotics)
  Re: A RCX 'Beacon'
 
(...) Once, when I had the time to think about it, I started an auto-correction algorithm based only in odometry and map matching. The idea was to memorize a map and at each impact with a wall and try to find if that same area was already hit in the (...) (25 years ago, 29-Jul-99, to lugnet.robotics)
  Locating your position with the help of fixed beacons (was Re: A RCX 'Beacon')
 
(...) The simplest way to do this is to build a device that emits a sweeping light signal, similar to a lighthouse, and a blinking signal synchronized to the sweep. Unlike a lighthouse, you want it to sweep back and forth (otherwise there are (...) (25 years ago, 29-Jul-99, to lugnet.robotics)

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