[Moon-net] magnetic encoders

[Jerry Kleker]

Hi Don,

Thanks for the email.

Yes, I am familiar with the US Digital stuff and probably would have started
with that except for 2 things:

1, They are only 10 bit devices. Austria's are 12 bit.
2, Each decoder only puts out data in one form whereas the Austria device
    puts out all 3 of the different formats (analog, pulse width, and binary)

I have made up a one inch square PCB for the device and am presently
working on the mechanical challenge (almost done).

I'll send you some pictures in a few days.

TNX agn es 73,

Jerry   W7QX



----- Original Message ----- 
  From: Don Latham<mailto:djl at montana.com> 
  To: w7qx at msn.com<mailto:w7qx at msn.com> 
  Cc: Currie, Eddie<mailto:ehcurrie at worldnet.att.net> 
  Sent: Wednesday, August 09, 2006 11:43 PM
  Subject: magnetic encoders


  Hi Jerry. Tipped to your efforts by a friend.  I have three chips (samples)
  and bought extra magnets per your tip. Do you have a source for mounting
  boards?
  US Digital, makers of shaft encoders, have some devices that look
  suspiciously like what you're attempting:
  http://www.usdigital.com/products/ma2/<http://www.usdigital.com/products/ma2/>
  It seems to me that for antenna use (I try to do radio astronomy) one might
  use some old style potentiometers like the potter-brumfield 1/2 watt as
  cases/bearings. Most of the old ones had nice big housings, and brass
  shafts. A little super glue, and bob's your uncle...?
  anyhow, a simple circular board of the appropriate size, masked, would be
  nice.
  I read a nice soldering technique somewhere for these tiny things...just
  slob them on, don't worry about bridging, and then use the flat solder wick
  to remove all unnecessary stuff. Cute, eh?
  Best to you,
  Don

  Dr. Don Latham
  Street: 17850 Six Mile Road
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  Email:   djl at montana.com<mailto:djl at montana.com>
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