A couple of us went down this road a couple months ago, you should be
able to find our post in the archives.

Eventualy I scrapped the idea, and built my own board. With all the
multiplexing it takes a significant speed hit and that wasn't suitable
for my project.

-Denny

----- Original Message -----
From: "Philip Pemberton" <philpem@DSL.PIPEX.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Friday, October 31, 2003 7:51 AM
Subject: [PIC]: BGMicro LCD1025 40x2 LCD panel


> Hi,
>   Has anyone here bought one of the 40x2 LCDs that BGMicro are
selling under
> the code LCD1025?
>   The module consists of a Tianma TM402CDBW6-1 40x2 LCD (with KS0066
> controller) and a board that sits - piggyback style - behind the
LCD. The
> piggyback board has five switches (D-pad and E) fitted, as well as a
bunch of
> 74HC240, 74HC595 and 74HC165 ICs. There are also six rectangular
LEDs (five
> green, one red) fitted to said board - to the right of the LCD.
>   So far, I've got the switch and LED panel pinning worked out, but
I haven't
> been able to find out what pins need twiddling to send data into the
LCD. I
> know the 74HC240 has something to do with the LCD (most of the lines
to the
> HC595 pair that runs the LCD seem to go through it), but I'll be
damned if I
> can find out what does what.
>   Of course, the quick way would be to pull the LCD off and scrap
the
> piggyback board, but where's the fun in that, especially when the
module
> could be useful for other things?
>   Just FYI, it seems these boards have come out of a DSR-4400
Digicipher
> receiver - the piggyback board bears the label "DSR-4400 FRONT  REV
B
> 96.4.26" and the datecode "APR 06 2001".
>
> Thanks.
> --
> Phil.                              | Acorn Risc PC600 Mk3, SA202,
64MB, 6GB,
> philpem@dsl.pipex.com              | ViewFinder, Ethernet (Acorn
AEH62),
> http://www.philpem.dsl.pipex.com/  | 8xCD, framegrabber, Teletext
> Failsafe - blows every part of the circuit except the fuse
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.
>

--
http://www.piclist.com hint: The PICList is archived three different
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