Subject:
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RE: Homebrew sensors?
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 14 Nov 1998 00:36:04 GMT
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Original-From:
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Eric Eilebrecht <ericeil@microsoft.NOMORESPAMcom>
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Viewed:
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2060 times
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Why would you need an array to do that? You could do it with three
variables:
var1 = starting angle
var2 = highest amplitude encountered so far
var3 = angle of highest amplitude
The algorithm goes something like this (in pseudo-C):
var1 = current_angle;
var2 = 0;
do
{
if (current_amplitude > var2)
{
var2 = current_amplitude;
var3 = current_angle;
}
turn();
}
while (current_angle != var1);
while (current_angle < var3)
{
turn()
}
Now you're pointed toward the highest-amplitude source
Eric
-----Original Message-----
From: Daniel Miller [mailto:danielmi@expert.cc.purdue.edu]
Sent: Friday, November 13, 1998 4:12 PM
To: lego-robotics@crynwr.com
Subject: Re: Homebrew sensors?
I know the logic of taking two sensors and differentiating to find
direction. I was looking for a way to do it with only one. I don't know
if what I proposed (do a 360 scan, then return to loudest) can be done
with the Spirit library; I think it would need arrays. A better thing
would be to compare the current amplitude to the last. However, the robot
would then go to the first sound it "saw" rather than the loudest.
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