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Re: ATM stepper motor controller

To: Bradley Davy <bdavy@fred.net>
Subject: Re: ATM stepper motor controller
From: Anthony Stillman <atmer@flash.net>
Date: Tue, 31 Aug 1999 18:25:36 -0700
Cc: atm@shore.net
In-Reply-To: <Pine.GSO.3.96.990831172252.13490A-100000@ss5.fred.net>
Reply-To: Anthony Stillman <atmer@flash.net>
Sender: owner-atm@shore.net


>I'm using an NE-555 timer to generate pulses in a variable speed
>controller for my RA drive.  I've come to the conclusion that my frequency
>control may not meet my needs for CCD photography...
>Brad


Actually, the 555 is amazingly stable.  Use low leakage caps and res. that
are temperature and humidity stable (a few cents more), run the frequency
up by a factor of three to ten and devide down.  A well fabracated astable
555 is as stable as a cheap crystal.

Anthony

Follow-Ups:
- Re: ATM stepper motor controller
  - From: spooner@page.az.net (Michael Spooner)

References:
- ATM stepper motor controller
  - From: Bradley Davy <bdavy@fred.net>

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