Newsgroups: comp.robotics
Path: brunix!sgiblab!swrinde!cs.utexas.edu!howland.reston.ans.net!EU.net!sun4nl!cs.vu.nl!ekoperen
From: ekoperen@cs.vu.nl (Ellert van Koperen)
Subject: Re: Ultrasonic Range Finder
Message-ID: <Cov4uy.JJu@cs.vu.nl>
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Organization: Fac. Wiskunde & Informatica, VU, Amsterdam
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Date: Tue, 26 Apr 1994 10:52:09 GMT
Lines: 16

g.Preston (gregpres@clark.net) wrote:

:   I believe the Polaroid pings on 
: 3 different frequencies with each sampling.

: 	-Greg-

What kind of speaker/microphone does one use for this?


Greetz, Ellert.
--
/* Try me and stagger. With x size as parameter! y size=auto scaling!*/float R,
y=1.5,x,r,A,P,B;int u,h=80,n=80,s;main(c,v)int c;char **v;{s=(c>1?(h=atoi(v[1]
)):h)*h/2;for(R=6./h;s%h||(y-=R,x=-2),s;4<(P=B*B)+(r=A*A)|++u==n&&putchar(*((( 
--s%h)?(u<n?--u%6:6):7)+"World! \n"))&&(A=B=P=u=r=0,x+=R/2))A=B*2*A+y,B=P+x-r;}
