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