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LED matrix display

 
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solomone



Joined: 25 Aug 2004
Posts: 1
Post25 Aug 2004 12:40   LED matrix display
dudes! its my first time here... I need some hint about my project LED matrix display. how do i interface it with an IBM computer? can you give me some infortion on building it, please...??? tanx....
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djalli



Joined: 10 Nov 2001
Posts: 887
Helped: 15
Location: 1600 Pennsylvania Avenue, Washington DC 20500
Post26 Aug 2004 5:15   LED matrix display
You need a microntroller, a RS-232 cable to establish a serial connection between the PC and microntroller and control the LED matric display from PC using the microntroller or make the microntroller to control LED matrix display intelligently by making some small program you uploaded to microntroller device itself.

One good book is this: http://www.amazon.com/exec/obidos/tg/detail/-/0750676981/002-5494211-5094404?v=glance
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sapaku



Joined: 17 Dec 2003
Posts: 5
Post26 Aug 2004 6:54   LED matrix display
Just program it in PIC microcontroller.It is easier. Or using an IC.
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starfish



Joined: 08 Jul 2004
Posts: 73
Post28 Sep 2004 10:00   Re: LED matrix display
tags: 89c51 led matrix microcontroller led matrix
Hi.....
you have got 2 options for controlling LED matrix display.....one is through serial port and other is parallel port...

If u use serial port then u would have to use some device like a Microcontroller / serial reciever to recieve data through serial port....
I normally use MAX 232 IC which converts serial port voltage levels to TTL levels . then after MAX 232 u require a microcontroller like 8051 , 89c51 to recieve serial data.......Then u can make decisions in microcontroller and send controlling bits to the LED matrix for appropriate display.....

2nd option u have got is the parallel port......It doesn't require any intermediate circuitry such as MAX 232 and some serial data reciever....The data is just latched on the parallel port when u send data to it......so u can send data to parallel port and give it directly to LED matrix ......also u can give data to 8051 or 89c51 microcontroller and that microcontroller can control the LED matrix....so u would have to program the microcontroller........and send appropriate bits for LED matrix controlling.....

Below is some helping material about serial port.....Smile Max 232 data sheet........

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