Newsgroups: comp.robotics
Path: cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!fas-news.harvard.edu!newspump.wustl.edu!news.ecn.bgu.edu!psuvax1!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news.sprintlink.net!pipex!uknet!gdt!uwe-bristol!dj-eastl
From: dj-eastl@pat.uwe.ac.uk (David Eastlake)
Subject: Info Dinsmore (Summary)
Message-ID: <1995Feb1.114709.29887@pat.uwe.ac.uk>
Sender: usenet@pat.uwe.ac.uk (uwe nntp usenet poster)
Nntp-Posting-Host: usenet@pat.uwe.ac.uk (uwe nntp usenet poster)
Organization: University of the West of England, Bristol
Date: Wed, 1 Feb 1995 11:47:09 GMT
Lines: 49

Hi Folks,
I got some info from Dinsmore today. They do two main sensors (both Hall
effect).

One sensor (the 1490) has a low res digital output N, S, E, W but NE, NW,
SE, & SW can be derived. It requires Vcc 5.0 -> 18.0 Volts.
But they recomend 8 to 13 volts. The outputs are open collector NPN,
capable of sinking 25mA. The unit is approx 0.5 dia, 0.5 high (presumably
inches?). Cost 1 to 99 off $12.00 each.


The ananlogue sensor (1525) is roughly similar size. It outputs a sin & cosine
pair of waveforms. These are centred about 2.5 Volts, peak 2.9V, trough
2.1V. I.E. When the unit point south, one o/p is 2.9 volts, the other 2.5V
The outputs are capable of upto 4mA. The o/p signals are "damped" to a 
similar degree as fluid filled convnetional compasses. They say they can
supply units that are un-damped.  The unit require a well regulated +5V
supply, it consumes approx 18 - 19 mA. Cost is 1 to 24 off $35.00 each.
They don't say what resolution can be typically achived. I have heared 
that less than 1 degree is achievable.

Address:
Dinsmore Instrument Company,
1814 Remell Street.
Flint,
MI 48503
USA
Tel: 810 744 1330
Fax: 810 744 1790
email: rcdinsmore@delphi.com

Perhaps this info could be added to the robot FAQ?

This information is based on what Dinsmore Instrument Company sent me.
It is not based on any experiance of using their products. I recomend 
that if you are interested in using their devices you should get information
direct from them.

I hope this helps,
David
*****************************************************************************
* David Eastlake      	* dj-eastl@csd.uwe.ac.uk			    *
* InFACT Group		* http://zen.btc.uwe.ac.uk/Public/infact/david.html *
* UWE-Bristol		*****************************************************
* Coldharbour Lane	* Work:    					    *
* Bristol. BS16 1QY 	*  Robotics, Assembly automation and  Electronics   *
* UK			* Play:                                             *
* Tel:+44 (0)117 763861	*  Sailing (Dinghys and Yachts, Linux and WWW       *
* Fax:+44 (0)117 763852 *						    *
