Marlin P Jones (Wirz) Serial LCD Board
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Anyone tried out one of these boards? I bought a couple with the included 1
x 16 display and can't get the first one to work properly. The LCD has a
cursor and the contrast works, but if I try to send any data via a PC or a
Stamp pin all I get is garbage characters. I've played with the baud rate
settings with the same results -- I get different garbage characters, but no
readable ones. Their instructions are rather vague at best. Any ideas?
x 16 display and can't get the first one to work properly. The LCD has a
cursor and the contrast works, but if I try to send any data via a PC or a
Stamp pin all I get is garbage characters. I've played with the baud rate
settings with the same results -- I get different garbage characters, but no
readable ones. Their instructions are rather vague at best. Any ideas?
Comments
had to add 64 to get the letters I wanted. (Check an ASCII table to
get the numeric codes for each letter--there is one in the STAMP
manual). Try sending the numbers (ASCII control codes) and see if the
proper letters show up. I don't know the specifics of this board, but
you might need a diode in line with the PC pin to drop the voltage to
the proper level. Just a thought...
Good luck,
--Jeff Wallace
Add a RTC, 256k EEPROM and an I2C bus to your BS2!
http://www.high-techgarage.com/products/timekeeper.php
--- In basicstamps@y..., Rodent <daweasel@s...> wrote:
> Anyone tried out one of these boards? I bought a couple with the
> included 1 x 16 display and can't get the first one to work
> properly. The LCD has a cursor and the contrast works, but if I try
> to send any data via a PC or a Stamp pin all I get is garbage
> characters. I've played with the baud rate settings with the same
> results -- I get different garbage characters, but no readable ones.
> Their instructions are rather vague at best. Any ideas?
>x 16 display and can't get the first one to work properly. The LCD has a
I bought this one from Jameco.
http://www.jameco.com/cgi-bin/ncommerce3/ProductDisplay?prmenbr=91&prrfnbr=4
153&cgrfnbr=501&ctgys=
It's very easy to use and worked right away. Stamp1 code:
serout 1,N2400, (12, "waiting...")
Jay
same way, or they both have the same problem, which I have not figured out
yet.
Compared to Acroname and Parallax, their documentation sucks. I know its a 1
x 16 display with no backlighting, but I don't know if it works as a single
row or a split row. You have to make quite a few assumptions during the
mating of the module and LCD also.
Sometimes I can get all 16 characters, sometimes not. It also appears the
baud rate is off by one step -- I got some correct characters with the
module set at 2400 and the Stamp at 4800. It does look like you described, I
have to add to the actual hex character value to get it to print the right
character. If I can just get one character to work, I can backtrack.
Keep in mind this is a board that allows you to talk to various and sundry
parallel LCD displays with a serial port.Wirz claims in the documentation
the input is good for true RS232 or TTL, so I don't think the diode is an
issue. Not the way I expected to spend a Saturday night, but I have beer and
the wife is gone.
Original Message
> I had a similar problem with a serial LCD I was using. I found that I
> had to add 64 to get the letters I wanted. (Check an ASCII table to
> get the numeric codes for each letter--there is one in the STAMP
> manual). Try sending the numbers (ASCII control codes) and see if the
> proper letters show up. I don't know the specifics of this board, but
> you might need a diode in line with the PC pin to drop the voltage to
> the proper level. Just a thought...
> > Anyone tried out one of these boards? I bought a couple with the
> > included 1 x 16 display and can't get the first one to work
> > properly. The LCD has a cursor and the contrast works, but if I try
> > to send any data via a PC or a Stamp pin all I get is garbage
> > characters. I've played with the baud rate settings with the same
> > results -- I get different garbage characters, but no readable ones.
> > Their instructions are rather vague at best. Any ideas?
Original Message
> >Anyone tried out one of these boards? I bought a couple with the included
1
> >x 16 display and can't get the first one to work properly. The LCD has a
>
> I bought this one from Jameco.
>
http://www.jameco.com/cgi-bin/ncommerce3/ProductDisplay?prmenbr=91&prrfnbr=4
> 153&cgrfnbr=501&ctgys=
>
> It's very easy to use and worked right away. Stamp1 code:
>
> serout 1,N2400, (12, "waiting...")
Original Message
From: Rodent [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=EW261z5vyMKBjml1J6lAFE67xOT0dmgfIbwIfw-KO0R0XZM5B0U8zSW4hmHAYCjCZoINyEzFFe93]daweasel@s...[/url
Sent: Saturday, June 09, 2001 5:03 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] Marlin P Jones (Wirz) Serial LCD Board
Did you get the free display, or did you use one you already had?
Original Message
> >Anyone tried out one of these boards? I bought a couple with the included
1
> >x 16 display and can't get the first one to work properly. The LCD has a
>
> I bought this one from Jameco.
>
http://www.jameco.com/cgi-bin/ncommerce3/ProductDisplay?prmenbr=91&prrfnbr=4
> 153&cgrfnbr=501&ctgys=
>
> It's very easy to use and worked right away. Stamp1 code:
>
> serout 1,N2400, (12, "waiting...")
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Everything you need comes for $60. Here's the docs
http://www.jameco.com/Jameco/Products/ProdDS/150990.pdf
Jay
me, we are talking two different animals here.
What you got was one piece for $60 -- a 2 row by 16 column serial LCD
display.
The Marlin P Jones deal cost $20. It is a serial to parallel converter board
(piece #1) and a 1 row by 16 column LCD (piece #2). You either use the
serial to parallel converter board with a parallel LCD they supply, or you
use one of your own choosing.
Original Message
> >Did you get the free display, or did you use one you already had?
>
> Everything you need comes for $60. Here's the docs
> http://www.jameco.com/Jameco/Products/ProdDS/150990.pdf
true, the docs were not very good. I am going by a rusty memory, but I
believe I used code based on Scott Edwards website where he posted docs for
his displays, (his stuff is always very well documented). Pay close
attention to the dip switch settings for the Wirz board. The display is set
up as a 2 line, 8 character display. I thought the package was a good deal
for the price. The display is low-end with poor contrast, but the price was
right. For 1st class displays with good contrast and documentation, you can
pay more and go to Scott Edwards Electronics.
Good luck,
Ray McArthur
Original Message
From: Rodent <daweasel@s...>
To: <basicstamps@yahoogroups.com>
Sent: Saturday, June 09, 2001 10:59 PM
Subject: Re: [noparse][[/noparse]basicstamps] Re: Marlin P Jones (Wirz) Serial LCD Board
> I put together the second display, and I either screwed it up in exactly
the
> same way, or they both have the same problem, which I have not figured out
> yet.
>
so if you get these working would you please post a sample code.
just so we can get a feel for some of the instructions for the lcd.
and if you don't get it going please let us know that also.
I did buy one of the Scott Edwards backpack and works great
but I'm looking for a cheaper alternative ,
and I thought this was it but!!!!!!
thanks
Victor Faria
Original Message
From: "Rodent" <daweasel@s...>
To: <basicstamps@yahoogroups.com>
Sent: Saturday, June 09, 2001 8:50 PM
Subject: [noparse][[/noparse]basicstamps] Marlin P Jones (Wirz) Serial LCD Board
> Anyone tried out one of these boards? I bought a couple with the included
1
> x 16 display and can't get the first one to work properly. The LCD has a
> cursor and the contrast works, but if I try to send any data via a PC or a
> Stamp pin all I get is garbage characters. I've played with the baud rate
> settings with the same results -- I get different garbage characters, but
no
> readable ones. Their instructions are rather vague at best. Any ideas?
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed with. Text in the Subject
and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
any real headway. I'm really inclined to think the LCD they supply is not
compatible or the switch to set the baud rate and whatnot is mislabeled. I'm
gonna email them Monday and get the scoop.
Original Message
> I was going to order a couple of these ,but I think I'll wait
> so if you get these working would you please post a sample code.
> just so we can get a feel for some of the instructions for the lcd.
> and if you don't get it going please let us know that also.
> I did buy one of the Scott Edwards backpack and works great
> but I'm looking for a cheaper alternative ,
> and I thought this was it but!!!!!!