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Posted 17 Jun 2004

Crystall Motion

, 17 Jun 2004
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Control LCD connected to parallel port
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this aricle uses:
1. Comunicating with parallel port
2. Serialization using binary and soap
3. DLL working
4. Dynamic Arrays
5. GUI
6. String Parsing.
7. System DateTime
8. Win_32 Classes (Win32_Processor, Win32_OperatingSystem, Win32_LogicalDisk, ...)

It uses the inpout32.dll to send data to parallel port.
This project has two sections first is lcd_Class. this class Parse any string that given to its properties and other values such as scrolling and wips and...
then send them to LCD.
This class can used with 1x8 .... 2x40 LCDs.

IT also can show you the system free and total memory, free and total space on each hadrdrive partition,
date and time in any formats, os version and name, cpu speed and manufacturer,
and can caculate the percent of given nembers (ex. percent free mem or hard drive) and show that in a prgress bar on your LCD.

for example if u send this string to the class:
Free space on C: $FREESPACE(C) ($FREESPACE%(C))
LCD Shows:
Free space on C: 1.7GB (12%)
Free memory 246MB (45%)

Second is Gui and user interface, at this time this only designed for 2x16 LCDs but simply can cheanged to use with other models.
This part using Serialization to save lcd_Data in two forms Binary and Soap.
It also used bitwise operands to check witch line must be scroll for example.

If u want some information to build your own LCD. It's very simple with a little knowledge about electronics.

See this pages for wirings:

Enjoy! Enjoy!


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

Iran (Islamic Republic of) Iran (Islamic Republic of)
No Biography provided

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Comments and Discussions

QuestionMore detail? Pin
Joel Holdsworth19-Jun-04 10:22
memberJoel Holdsworth19-Jun-04 10:22 
Generalintroduce, explain Pin
Ellery18-Jun-04 15:46
memberEllery18-Jun-04 15:46 
explain a little better what your article is about...

"If u want some information to build your own LCD. It's very simple with a little knowledge about electronics."

I find that hard to believe.

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