Rubashka Vasiliy , Ukraine , 2007
This line differs
from other only software both on the
part of computer, and on the part of controller is written on Basic.
The Scheme of the
particularities has not. By means of converter level on transistor is organized
unilateral relationship with PC. The Controller takes the text, brings it in
nonvolatile memory EEPROM and in dynamic mode removes in shift registers. The
Assemblies transistor of key give more powerful output, and for low brightness
from them possible to refuse. The Program of the controller in main cycle
expects the appearances of the symbol "S" whereupon occurs boot data.
After her(its) completions are read importance amount sent symbol and current
velocity. Are they hereinafter read first 7 symbols, and him are then and there
assigned given from code table. Why seven? It is organized as 8х8 pixels, at length of the line 48 are
contained 6 symbols. Seven necessary to do its to shift. Hereon program scanned from code
table data, consecutively loads in registers of the shift, includes the key of
the first line, bears the necessary pause, switches off the key, the following
portion data, the following key and etc until will pass all eight lines. Moves
the row, and are newly brought given in registers moreover if in the first
event were removed importance column with 1 on 48, that is here removed with 2
on 49. Then with 3 on 50 and finally with 9 on 56. Here is why necessary seven symbols! As a result we have
shifted the text on one . Now necessary to shift the text on one symbol, and
consider the symbols with the second on eighth. Hereinafter procedure is
repeated by the circle.
Due to dynamic
unrolling, the text moves is much sailing, as it are goes on trundle, no bulges of the letters, but mark their slopping
that, in general that does not spoil whole picture, but will add its original
piquancy.
Instead of
specified register possible to use others, specialized and not much, only on
current approached (but its under off-duty factor 8 will much more be a
standard static).
That has shown the
results? Under correct building of the algorithm to manage to get wholly worker
design, visual not yielding industrial picture. Until it was written
program-loader, text was flooded in EEPROM manually, from prepared in notepad
file. On the first time sound helped. Some letters in table symbol until it is
added. But their visual coding allows doing this itself, even completely
changing the font. Schematic:
Circuit in real: 
Example of PC application:
Source code for BASCOM-AVR and for Visual Basic 6 is not published here because they are too long, all this file you can find in ZIP archive of this AN.
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