Re: [Gumstix-users] Electronics 101. :-)

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> I salvaged two Epson LCDs from a terminal-thingy. (One being a dotmatrix 
> LCD, the other is a proper 300x240 (I think) LCD)
>
> The dot-matrix I found a proper datasheet for, as for the other one I'm 
> not sure. The former is a EA-D16015RR-Y (datasheet at 
> http://www.datasheet4u.com/html/E/A/-/EA-D16015xx_EPSONElectronics.pdf.html),

I would suggest using a CPLD for interconnecting the EA-D16015RR-Y.  It may 
sound difficult but it's not.  It maps the display to an address from which 
you can just read & write to.  Something like a Xilinx Coolrunner II.  The 
LCD is a 5V display, so there are a few additional parts involved.  If you 
go the Coolrunner II route I can assist with schematic and HDL code.

> the other is a EG7500D-NS, I *think*. The only thing I found is one for a 
> EG7500B-LS, it seems at least to be similar (screen size is 130x110mm for 
> both), which you can see at 
> http://www.datasheet4u.com/html/E/G/7/EG7500B-LS_Seiko.pdf.html.
>

If you can't find the exact model and data sheet, you may be wasting your 
time.

Joel 