low cost LCD mods for bx apps

Started by cmos8me January 6, 2004
hey fellas,
I found this little site thought it would be of interest to some,
this is the link to the LCD mods i found.

http://sales.goldmine-elec.com/prodinfo.asp?prodid31

7.95 is great , but im not sure if they are serial or parralel? Go
to
http://www.powertipusa.com/lcdc.htm

for product data, and the model # is PC1202-A. If not serial Im
not sure how to interface the things...I guess it would mean more
data pins for parralel? i believe they would be great for projects.
Any input ?



--- In , "cmos8me" <cmos8me@y...> wrote:
> If not serial I'm not sure how to interface the things.
> I guess it would mean more data pins for parralel?

They are parallel interface according to the data sheet at
http://www.powertipusa.com/pdf/pc1202a.pdf

However, you can easily build your own serial interface to such a
display using a 74LS595 (for serial to parallel) and a 74LS165 (for
parallel to serial). Sometimes you're interfacing to several
parallel devices and it's an easy task to use one set of serial-
parallel-serial converters to work with all of the devices.

The BX-24 Ethernet interface that I recently posted does exactly
that. You can find links to the schematics at
http://www.kinzers.com/don/BX24/Ethernet

The Packet Whacker module and the LCD that I used are both parallel
interfaces. I implementd read/write access to both of them using
just 5 I/O pins. With a bit more external logic, I could have done
it with 4 pins.

Also, I recently posted a message with links to a couple of sites
that have a lot of information on interfacing with LCDs. See
http://groups.yahoo.com/group/basicx/message/14966 Don



---Don, that helps quite a bit, I believe im gonna pick up a few of
those LCD mods thats a heck of a deal from what I could see..For
little projects for DAQ and reading inputs will be great..
Man ive got alot to learn though :) , Im in my second year of an EE
program so...Slowly but surely getting there..
Hey job well done on the Toyota buddy...350 looks good in that too..
Thanks again Don,

CMOS
>
> They are parallel interface according to the data sheet at
> http://www.powertipusa.com/pdf/pc1202a.pdf
>
> However, you can easily build your own serial interface to such a
> display using a 74LS595 (for serial to parallel) and a 74LS165
(for
> parallel to serial). Sometimes you're interfacing to several
> parallel devices and it's an easy task to use one set of serial-
> parallel-serial converters to work with all of the devices.
>
> The BX-24 Ethernet interface that I recently posted does exactly
> that. You can find links to the schematics at
> http://www.kinzers.com/don/BX24/Ethernet
>
> The Packet Whacker module and the LCD that I used are both
parallel
> interfaces. I implementd read/write access to both of them using
> just 5 I/O pins. With a bit more external logic, I could have
done
> it with 4 pins.
>
> Also, I recently posted a message with links to a couple of sites
> that have a lot of information on interfacing with LCDs. See
> http://groups.yahoo.com/group/basicx/message/14966 > Don





--- In , "cmos8me" <cmos8me@y...> wrote:
> I'm in my second year of an EE program...

I'm an EE as well (HKN, MSEE Purdue '77) but for the last 20 years
I've been doing mostly software. I'm enjoying getting back into the
electronics end of things. Where are you going to school?

Also, you might want to check out All Electronics
(http://www.allelectronics.com). They have a 24x2 parallel LCD for
$9.50.

http://www.allelectronics.com/cgi-bin/category.cgi?
category65&item=LCD-74&type=store

I think that you'll find the 12 character lines a bit limiting. The
extra $1.55 for twice as many characters is probably worthwhile.

They also have a 20x2 for $6.50. You can check out all of their LCDs
at
http://www.allelectronics.com/cgi-bin/category.cgi?
category65&type=store

I've always gotten good service from these folks and usually check
them first when I need something. Their selection changes over time
so you may or may not be able to get a specific item. I guess that's
how the surplus liquidation business runs though.

Don



--- In , "Don Kinzer" <dkinzer@e...> wrote:
> --- In , "cmos8me" <cmos8me@y...> wrote:
> > >
> I'm an EE as well (HKN, MSEE Purdue '77) but for the last 20 years
> I've been doing mostly software. I'm enjoying getting back into
the
> electronics end of things. Where are you going to school?
>
> hey thats great,
Im going to Oklahoma State University..Just finished an
Instrumentation/Automation technologies Minor, moving into the
electronics theory now. My EE degree is gonna be great because my
last two years have been in the applications of Control.. Motors,
Robotics, and process control. So I am really geared up for the EE
theory, need to get my design strategies down...So many applications
so lil time ya know...hey thanks for the tips on alltronics..

Daniel (aka CMOS) :)