Subject:
|
Re: Polaroid Sonar
|
Newsgroups:
|
lugnet.robotics.handyboard
|
Date:
|
Tue, 22 Apr 1997 14:42:09 GMT
|
Original-From:
|
Ericson Mar <EMAR@CSFBG.CSFB/nospam/.COM>
|
Reply-To:
|
<emar@csfbgANTISPAM.csfb.com>
|
Viewed:
|
1704 times
|
| |
|
|
I was getting the exact same result when I ran motors with the HB
while using my sonar. The problem was that there was alot of noise
caused by my motors...apparently electrical and EMI. Do you have alot
of components that may be causing some noise connected to the HB?
Also, perhaps you may want to try grounding BINH. If you get lower
that 17" that might mean that BIHN is taken high before its time. But,
I must admit that I haven't had any problems with BINH (even without a
resistor). Internal Blanking yeild a 17" minimum. Kent's BINH yields
an 8" Minimum. Well, actually, the real minimum is 0, no reflection
detection.
Whoever else has some ideas, please post it to the board. I would also
like to know some solutions. :)
______________________________ Reply Separator _________________________________
Subject: Polaroid Sonar
Author: JKUA (INTERNET.JKUA) at SSWGATE
Date: 4/22/97 1:41 AM
Received: from SSWGATE by SSW.CSFB.COM
(Soft*Switch Central V4L380P7);
22 Apr 1997 01:41:25 EST
Received: by sswgate (SMI-8.6/SMI-SVR4)
id BAA11641; Tue, 22 Apr 1997 01:38:34 -0400
Received: from csfb1.fir.fbc.com by sswgate (SMI-8.6/SMI-SVR4)
id BAA11638; Tue, 22 Apr 1997 01:38:33 -0400
Received: from gw1.fbc.com (gw1.csfb.com [198.240.130.98]) by csfb1.fir.fbc.com
(8.8.3/8.8.3) with ESMTP id BAA20783 for <EMAR@CSFBG.CSFB.COM>; Tue, 22 Apr 1997
01:42:00 -0400 (EDT) Received: (from mailuser@localhost) by gw1.fbc.com
(8.8.3/8.8.3) id BAA23146 for <EMAR@CSFBG.CSFB.COM>; Tue, 22 Apr 1997 01:51:40
-0400 (EDT) Received: from aleve.media.mit.edu(18.85.2.171) by gw1.fbc.com via
smap (V1.3)
id tma023139; Tue Apr 22 01:51:26 1997
Received: from hil-img-4.compuserve.com (hil-img-4.compuserve.com
[149.174.177.134]) by media.mit.edu (8.7.5/ML961206) with SMTP id BAA25151 for
<handyboard@media.mit.edu>; Tue, 22 Apr 1997 01:38:32 -0400 (EDT) Received: by
hil-img-4.compuserve.com (8.6.10/5.950515)
id BAA24808; Tue, 22 Apr 1997 01:38:01 -0400
Date: Tue, 22 Apr 1997 01:37:01 -0400
From: John Kua <jkua@compuserve.com>
Subject: Polaroid Sonar
To: Handy Board Mailing List <handyboard@media.mit.edu>
Message-ID: <199704220136_MC2-14B1-7EBA@compuserve.com>
Help! I've purchased the Polaroid Sonar OEM kit, plugged them in in
accordance to Kent's instructions and using his software, but if I plug in
BINH through a 360 Ohm resistor or with no resisitor, all I get is 1 - 2".
If I unplug it, I get fluctuating numbers, with a minimum of 17". It seems
to work alright at distances from 17" - 24", but the numbers seem to
fluctuate between the actual number and 17". If I move to greater than 24",
the fluctuations are so frequent and random, I can't get a reading.I've
tried putting tissue on the back of the transducer, but that doesn't seem
to help. Is the ticking sound normal? I would appreciate any help anyone
could give as my time is running short.
|
|
1 Message in This Thread:
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
