Newsgroups: comp.robotics
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From: nagle@netcom.com (John Nagle)
Subject: Re: Sonar Range Finder - Need Help!
Message-ID: <1993Feb5.051015.3937@netcom.com>
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
References: <1ksa4kINNbqq@tamsun.tamu.edu>
Date: Fri, 5 Feb 1993 05:10:15 GMT
Lines: 23

charath@cs.tamu.edu (R. Charath Ram) writes:
>The board uses a chip that is marked TI327 and another one that is marked 95A06
>(with something like an Analog Devices Inc. symbol on it). The board itself has
>the TI logo on it (but no part numbers or anything like that)

     I haven't seen that one.  The TI sonar boards I used were TI part
SN28827, and used the ICs TL851 and TL852.  For what it is worth,
the pinout for that board is

	1	V+ (5V, with a big electrolytic to handle the surge)
	2	ECHO (goes HIGH when an echo is detected)
	3	OSC  (420KHz out, usually unused)
	4	unused
	5	INIT (set HIGH to ping, set LOW when done listening)
	6	BINH (blanking inhibit, used to abort 2.33ms blanking period
		after pinging for special short-range applications)
	7	BLNK (blank, used to reset rcvr after first echo for
		multiple-echo sensing, if desired)
	8	GND

This may or may not be of use to you.

					John Nagle
