Hi all


check please this project

http://sohilp.blogspot.com/2011/10/tutorial-10x8-led-matrix-arduino.html

i liked it but the problem is my teacher doesn't want me to work with Arduino . she said try to find like this project " Matrix LED" but by using
parallel port + db25 + microprocessor

i want to ask you what Material will i need ?

i have to submit the report tmw

help me please

thank you

 

http://www.lmgtfy.com/?q=matrix+led+parallel+port

 

i get answer from someone
he said
Probably yes. You'll need to know how much current/voltage parallel can source or sink. I'm sure it is in the range of arduino, but may be +-12V. Check!

Serial is another option. Again, it'll probably be RS232 at +-12V. You can get RS232 to TTL converters though, and a serial to parallel chip. That'll let you control your LEDs via a serial port.

how can i make the new circle with this option
I asked this person but i didn't get any answer yet

 

Parallel port is deprecated for years.

Have a look this: http://pic.hitechworld.org/data/ledmatrixtag

The source code is included.

The program is built in a way the matrix size is independent from the scrolling. The image is at first built inside RAM.

It can be modified for different number of LEDs.
It should be possible to change for different PICs, and for different controllers. The PIC dependent code is all isolated so you only need to change that.

If you use my code, feel free to link to the URL.

 

but i need work in microprocessor only because i am not study microcontroller

can you make this circle in " Proteus Professional" i do not have this program

http://4.bp.blogspot.com/-oAesiXkofYU/TpXFlTdiJSI/AAAAAAAAAFA/oh5pi0dGl5Q/s1600/FNAOI34FWMO2YY6.jpg

i must submit the report and the circle to my teacher today ):


thank you "takao21203 "

 

Microprocessor could be anything.

A microcontroller is a microprocessor, only the RAM + EPROM is built into the chip. And microprocessor are very expensive and difficult to work with.

There are not many microprocessor LED matrix circuits on the internet.

An Arduino is an ordinary microcontroller by the way.

 

okay see this
http://www.merkisoft.ch/projects/matrix-display/

and

http://www.instructables.com/id/8x8-LED-matrix/

Give me your suggestions
and how i can make the circuits ?

 

What do you want?.. ALL the information you need has already been provided.. We won't do your homework for you.

 

I wanted to project the idea close to the idea of the first project
Be used LED and microprosser
And the Circle clear it