Searching \ for ' SV: [EE]: big letters on lcd' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/lcds.htm?key=lcd
Search entire site for: 'big letters on lcd'.

No exact or substring matches. trying for part
PICList Thread
'[PICLIST] SV: [EE]: big letters on lcd'
2000\09\26@154543 by MEDICINTEKNIK KB

picon face
There is a function that allows you to design your own character on the display. It is a h--- of a lot of bit-banging, but you could design your own segment of a character. If you decide to use 2x3 characters on the display for one "big" character, you would have to design a 6th of that big charachter (practically) each time it is to be displayed. Large tables would hold the data.

(I'm sure a lot of you out there doesn't think this is serious). In large quantities, a special display would be ideal. There are other displays for this (graphical for instance), but I guess you wanted to use what you have...


Sven
-----Ursprungligt meddelande-----
Från: Andre Abelian <spam_OUTengelecTakeThisOuTspamEARTHLINK.NET>
Till: .....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU <PICLISTspamKILLspamMITVMA.MIT.EDU>
Datum: den 25 september 2000 23:05
Ämne: [EE]: big letters on lcd


{Quote hidden}

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2000\09\27@042056 by Martin Hill

picon face
But I thought you could only have eight special characters.  If you
display some, then change them and display some more, does the
display keep the original ones or are they changed?  I have used
special characters for doing  bargraphs, but I only used seven I
think.

Martin
> There is a function that allows you to design your own character on the display. It is a h--- of a lot of bit-banging, but you could design your own segment of a character. If you decide to use 2x3 characters on the display for one "big" character, you would have to design a 6th of that big
charachter (practically) each time it is to be displayed. Large tables would hold the data.
{Quote hidden}

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
use @spam@listservKILLspamspammitvma.mit.edu?bodyT%20PICList%20DIGEST


2000\09\27@130202 by Andre Abelian

picon face
I think I can answer to me own question.
creating big letters or any symbol is not thing to do with
custom characters. let say we want to create a letter A.

00*00
0*0*0
*****
*000*

this is 4 by whatever display all we need to do is to decide
how wide are they going to be then  based on that we can put together
with proper symbols that are available. Now in order to display a big letter
A we need to create big letters and numbers and save them then
when the command received to display big letters we need to compare each
incoming
letter and match it with proper letters and spacing. this is how I think it
works
I am going to try it.I know it is going to work but is this the only way of
doing it?
is there any better way?

Andre Abelian



> But I thought you could only have eight special characters.  If you
> display some, then change them and display some more, does the
> display keep the original ones or are they changed?  I have used
> special characters for doing  bargraphs, but I only used seven I
> think.
>

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
use KILLspamlistservKILLspamspammitvma.mit.edu?body=SET%20PICList%20DIGEST


2000\09\27@132926 by M. Adam Davis

flavicon
face
Custom characters will be necessary for your situation, though.  Try to make a B
with only four lines:

####
####
#   #
####

You could use alternate characters:
####
#___#
#^^^#
####

But it doesn't look all that great.

Using custom characters allows you to make the middle of the B a bit better,
etc.  You can only have 8 user defined characters at once though.  The eight
custom characters SEETRON uses to create their big character displays are shown
in column 128 of the character code chart on page 6 of the following manual:
http://www.seetron.com/pdf/bpp423.pdf

These allow very crude, but readable, large characters on four line displays.

-Adam

Andre Abelian wrote:
{Quote hidden}

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
use spamBeGonelistservspamBeGonespammitvma.mit.edu?body=SET%20PICList%20DIGEST


2000\09\27@135218 by Bob Ammerman

picon face
Yep: Only 8. You can redefine them at will tho. So if you only want to
display on big character at a time you can use all 8 of them to define it.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

{Original Message removed}

2000\09\29@110133 by Peter L. Peres

picon face
Andre,

there are many ways to do this. One of them is the one you have
discoevered, that of painting the large letters out of smaller ones used
as pixels. Another way is to use characters that mimic the required shape
of the letter being printed, like:

(fixed font):
 /\
/__\
/    \

On a standard HD44780 driven LCD you do not have the option to implement
quarter block graphics (which require 12 definable symbols to implement).
You can also not implement starburst quarters (for lack of symbols). The
only option is the one you have discovered in fact afaik. You can make the
display nicer if you define a special character that will form the body of
most of your large characters. A kind of asterisk (or blob) is the usual
choice. For this however, you can have 8 different kinds of blobs with
different densities, which could mimic 8 levels of grayscale when viewed
from some distance. The viewing distance for a LCD with 5mm letters should
not be greater than 60cm and if you use 5 x 7 large characters and scale
the distance you end up with 3 meters or so. Your letters will only look
'good' from between 1 and 3 meters probably. It is good to keep this in
mind when starting imho ;-)

hope this helps,

Peter

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
"[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's


2000\09\29@142232 by MEDICINTEKNIK KB

picon face
Sorry Peter, not anymore. I had to apologize earlier on this thread, as I "opened my mouth" too quickly on that point.....  :=|

I guess it doesn't work;  I have not tried it.


Sven

-----Ursprungligt meddelande-----
Från: Peter L. Peres <TakeThisOuTplpEraseMEspamspam_OUTACTCOM.CO.IL>
Till: RemoveMEPICLISTspamTakeThisOuTMITVMA.MIT.EDU <PICLISTEraseMEspam.....MITVMA.MIT.EDU>
Datum: den 29 september 2000 17:02
Ämne: [EE]: big letters on lcd


{Quote hidden}

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
"[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's


2000\09\30@005145 by Andre Abelian

picon face
Adam,

you are right I have to work on it more.
thanks

Andre



> Custom characters will be necessary for your situation, though.  Try to
make a B
{Quote hidden}

better,
> etc.  You can only have 8 user defined characters at once though.  The
eight
> custom characters SEETRON uses to create their big character displays are
shown
> in column 128 of the character code chart on page 6 of the following
manual:
> http://www.seetron.com/pdf/bpp423.pdf
>
> These allow very crude, but readable, large characters on four line
displays.
{Quote hidden}

letter
> > A we need to create big letters and numbers and save them then
> > when the command received to display big letters we need to compare each
> > incoming
> > letter and match it with proper letters and spacing. this is how I think
it
> > works
> > I am going to try it.I know it is going to work but is this the only way
of
{Quote hidden}

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


2000\09\30@180042 by Marc

flavicon
face
> 00*00
> 0*0*0
> *****
> *000*
>
> this is 4 by whatever display all we need to do is to decide

Good luck with the E, it needs 5 lines.

Go to http://www.lcd-module.de and look up the P120N-LED display. It's SED1320
120x32 pixel graphic display an a very small case.  It can display
20x4 text or any other size. It's easy to use and cheap.  I have made a
driver for it in just a few days, that supports any font size, proportional
fonts, etc.  With the small memory size of the PICs you will want not
to include too many different fonts at once into your product though.

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


2000\09\30@205758 by Andy Howard

picon face
----- Original Message -----
From: "Marc" <RemoveMEmarcspam_OUTspamKILLspamAARGH.FRANKEN.DE>
To: <RemoveMEPICLISTTakeThisOuTspamspamMITVMA.MIT.EDU>
Sent: Saturday, September 30, 2000 1:07 PM
Subject: Re: SV: [EE]: big letters on lcd


> > 00*00
> > 0*0*0
> > *****
> > *000*
> >
> > this is 4 by whatever display all we need to do is to decide
>
> Good luck with the E, it needs 5 lines.


Not if you define two half height blocks as custom characters.

I don't have the characters to show it in ASCII but imagine pairs of
vertical bars represent solid blocks, the commas represent a character with
the lower half filled and the apostrophes one with the upper half filled.

||||||||
||,,,
||''''''
||||||||


In fact that's quite a good impression of how it will look - horrible!

With these two characters and the four possible right angled triangles you
can make large characters (and grapjics) fairly easily.
E.g for a B you'd do the same but make the last character on each line a
triangle

|||||||\\
||,,,,//
||'''''''''\\
|||||||//


They'll still look a bit chunky unless you're some distance away, but if you
really must use a 4 line character LCD this will get you going.


> Go to http://www.lcd-module.de and look up the P120N-LED display. It's SED1320
> 120x32 pixel graphic display an a very small case.  It can display
> 20x4 text or any other size. It's easy to use and cheap.  I have made a
> driver for it in just a few days, that supports any font size,
proportional
> fonts, etc.  With the small memory size of the PICs you will want not
> to include too many different fonts at once into your product though.


I agree, for the small increase in price it isn't worth using a character
LCD for this kind of thing, and it will look  /much/ nicer when it's done
with a graphics module.














.

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


More... (looser matching)
- Last day of these posts
- In 2000 , 2001 only
- Today
- New search...