Newsgroups: comp.robotics
Path: brunix!sgiblab!swrinde!cs.utexas.edu!uunet!newsflash.concordia.ca!davec
From: davec@ECE.Concordia.CA (Dave Chu)
Subject: Miniboard beeper question
Message-ID: <CHqzGB.5pr@newsflash.concordia.ca>
Sender: usenet@newsflash.concordia.ca (USENET News System)
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Organization: ECE - Concordia University
Date: Thu, 9 Dec 1993 03:09:46 GMT
Lines: 13

I'm thinking of attaching a ultrasonic transducer to the beeper output of 
the miniboard to detect objects.  The problem is that the Ultrasound 
transducer operates at 40KHz and I don't know if the miniboard is capable 
of generating a 40KHz singal.  I'm using the IC11 C compiler with the 
miniboard library, but don't have the 6811 programmer's guide or data 
sheets.  I've tried going through the library trying to figure out how 
to set the timer inorder for it to generate 40KHz singal, but no such 
luck.  I hope it is just a matter of loading the right value to the
Timer controller register, any suggestion will be greatly appreciated.

Dave

PS:If 40KHz is too high, I also have some 24KHz transducers.
