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 Robotics / Handy Board / 7346
7345  |  7347
Subject: 
Re: sonar
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Mon, 24 Jan 2000 17:33:05 GMT
Original-From: 
Giang Tran <gt4025@&nomorespam&chi.devry.edu>
Viewed: 
1098 times
  
The location(C7) for the .1uF that you are refering to is located on the
sonar driver board, on the lower left corner of the ribbon connector. Any
non-polarized cap will do just fine.


At 05:47 PM 1/23/00 GMT, nat amvat wrote:
i recently purchased a handy board, an expansion
board, and a polaroid 6500 sonar sensor. i installed
the expansion board, along with the appropriate
libraries. i also plugged the sonar into the expansion
board, and used the code for the sonar on the mit
handy board/sonar page
(http://lcs.www.media.mit.edu/groups/el/projects/handy-board/software/sona • r.html).
however, when i run the program, i receive numbers
which i am not sure i understand. after i convert the
numbers returned from the sonar to approximate
distances (feet), i get sequences such as:
1.7
-2.4
5.2
.5
-6.1

i don't understand the negative numbers. or the
sequences.

would this be related to the note on the website about
the installing a 0.1 µF capacitor in the C7 position?
if so, how does one do that?

any help appreciated,

nat




Message has 1 Reply:
  Re: sonar
 
Just wondering... in reference to the modification on the Polaroid 6500 sonar ranging board, there's been two different assertions. Should the 0.1uF cap be of a polarized (e.g. electrolytic, tant, etc.) or non-polarized variety (as stated below)?... (...) (25 years ago, 17-Mar-00, to lugnet.robotics.handyboard)

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