Xref: utzoo sci.electronics:15252 comp.robotics:483 Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!pt.cs.cmu.edu!o.gp.cs.cmu.edu!netnews.srv.cs.cmu.edu!gerry From: gerry@frc2.frc.ri.cmu.edu (Gerry Roston) Newsgroups: sci.electronics,comp.robotics Subject: Re: Need a position tracker for a mobile robot. Message-ID: Date: 29 Oct 90 15:47:56 GMT References: <$M7%L=#@rpi.edu> Sender: netnews@cs.cmu.edu (USENET News Group Software) Reply-To: gerry@frc2.frc.ri.cmu.edu (Gerry Roston) Distribution: na Organization: Field Robotics Center, CMU Lines: 18 In-Reply-To: behara@turing.cs.rpi.edu's message of 28 Oct 90 23:35:28 GMT The two solutions proposed so far are probably the best: loran and gps. if this is not what you want, here is a cheap and sleazy method: Get 3 yo-yo pots (more info available if requested). these are precision potentiometers/tachometers hooked up to a spool if string (similar to a key-chain ...). Anyway, locate three of tehm in the world, attach the strings from all three to your robot, and you now know its position. Well, I did say sleazy. gerry -- gerry roston, field robotics center robotics institute, carnegie mellon university pittsburgh, pennsylvania, 15213 (412) 268-6557 gerry@cs.cmu.edu