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List:       owfs-developers
Subject:    Re: [Owfs-developers] LCD / AAGelectronica design
From:       Eric Vickery <ericvic () hobby-boards ! com>
Date:       2007-01-31 22:55:42
Message-ID: 45C11E6E.206 () hobby-boards ! com
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Here is the Hobby Boards LCD Driver schematic 
http://www.hobby-boards.com/catalog/links/lcd2-r1/LCD%20Driver%20v2.0%20Schematic.pdf

Eric
www.hobby-boards.com

Gregg C Levine wrote:
> Hello!
> Paul, everyone, can all of you describe, or better yet, point me to the
> schematic for the Hobby Boards design?
> 
> While I believe it can be done using the DS2408, which is what both firms
> have chosen, however I believe it can be redone in a better style using the
> DS2406, specifically the two switch per device arrangement.
> 
> Let's just say it's my "Miracle Worker" nature coming out on this one. My
> one problem with the DS2406, duo device, will be mounting them. I obtained
> one a while ago, and had a little problem with it, and was able to hand
> solder it down. So far the sleds that have been made up for the SMT package
> styles do not match the one created by Maxim for the TSOC style.
> 
> I actually did speak with a representative with Jameco concerning this
> issue, and he found it to be an interesting one. No such look having them
> commission a new series of sleds specifically for the TSOC style.
> --
> Gregg C Levine hansolofalcon@worldnet.att.net
> "The Force will be with you. Always." Obi-Wan Kenobi
>   
> 
> 
>> -----Original Message-----
>> From: owfs-developers-bounces@lists.sourceforge.net
> [mailto:owfs-developers-
>> bounces@lists.sourceforge.net] On Behalf Of Chris
>> Sent: Wednesday, January 31, 2007 1:13 PM
>> To: owfs-developers@lists.sourceforge.net
>> Subject: Re: [Owfs-developers] LCD / AAGelectronica design
>>
>> Ben Griffith wrote:
>>> I put together the hobby-boards design and that one does work, but it's
>>> limited to just the first line of the display.  At least that was the
> case
>>> the last time I did an "svn update".
>> Same here, I altered my construction to the hobbyboards-design, I have a
>> 2x24characters-Display, and only the first line is writable...
>> It's because the display-size is undefined, the hd44780 supports up to
>> 40 characters per line
>> (http://home.iae.nl/users/pouweha/lcd/lcd0.shtml#visible_ddram) so you
>> need to fill the string you write with 40 characters and the 41st one is
>> the second line.
>>
>> Maxim/AAG: I didn't know there is a 8bit-design, I supposed the 4bit-one
>> shown on owfs.org was meant... OWFS seems to use the 8bit one... look at
>> the source:
>>
> http://owfs.cvs.sourceforge.net/owfs/owfs/module/owlib/src/c/ow_2408.c?revis
> ion=1.32&v
>> iew=markup
>> line 198, it writes a whole byte, not a nibble like the LCD_H (line 370).
>>
>> But would still be nice to support the 4bit AAG-design, shouldn't be a
>> great change.
>>
>>
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> 
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