Double sided flex board which makes it's way through the body, folded back
on itself, with 3 or 4 proprietary Sharp ICs embedded under potting? It's
safe to say no one else is going to be making them
_________________________________
John Hermanson
Camtech Photo Services, Inc.
21 South Lane,
Huntington, NY, 11743-4714,
631-424-2121, www.zuiko.com
_________________________________
----- Original Message -----
From: "Scott Gomez" <scott@xxxxxxxxxxxxxxxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Wednesday, July 21, 2004 12:56 PM
Subject: [OM] Re: OM4 strange electronic buzzing sound
>
> Seems to me that some enterprising engineer could produce the necessary
> circuits. Maybe someone with the right experience and a love of OMs will
> do so, just as a "spare time" project at some point. I would think that
> any new circuit wouldn't have to be a direct replacement in terms of
> exact duplication of chips, layout and size--only in terms of function
> and ability to provide connection to the necessary inputs and outputs.
> Given the time elapsed since the circuitry was originally designed, I'd
> think it could probably be simpler to produce now and perhaps even
> smaller and more reliable.
>
> ---
> Scott Gomez
>
> -----Original Message-----
> From: Matt Boland [mailto:mattboland@xxxxxxxxxxx]
> Subject: [OM] Re: OM4 strange electronic buzzing sound
>
> I guess I like photography AND engineering. I was just thinking that we
> could do better than USD$250.00 for an OM4Ti circuit. And I would get to
>
> make the shadow and hi-light buttons into -1/3,+1/3 stop buttons.
>
> W Shumaker wrote:
> > I mentioned that possibility a couple of years ago. But who has
> > really got the time to spend on it when that time could be spent
> > making photographs.
>
> > Wayne
> >
> > At 08:44 AM 7/15/2004, you wrote:
> >
> >>Is there enough demand to develop our own replacement circuits? I
> don't
> >>know how much the circuits changed over the years and whether or not
> >>they use the same chips as the originals, but USD$250 sounds extreme.
> I
> >>currently am working on a 32bit CPU board running linux, 32M of RAM
> and
> >>Flash, and they will cost roughly USD$120 to manufacture. Texas
> >>Instruments make a nice little chip called the MSP430 which comes in
> >>many variants and is designed for ultra low power applications.
> >>Something like that could incorporate most of the functionality in
> >>software. I reckon a USD$40.00 part could be met. Of course, FCC and
> CE
> >>EMC compliance would need to be addressed, so maybe the cost of
> testing
> >>to those standards outweighs the development effort.
> >
> > The material cost is not the issue when you figure in time and effort.
>
>
> Matt Boland (BEng) Phone : 61 7 5594 9824
> ==============================================
> List usage info: http://www.zuikoholic.com
> List nannies: olympusadmin@xxxxxxxxxx
> ==============================================
>
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|