24×24 LED dot matrix display control
-->This is pretty old circuit but I found it interesting to describe here.
24×24 LED display is formed by using 9 8×8 Dot LED matrix displays, that are connected to AT90S2313 MCU. MCU scans an indicator lines in series. Special PC program is written which allows drawing images on screen and transfer them via COM port to device. You can send images in series what gives an animation effect.
Device circuit:
Circuit is was built using obsolete AT90S2313 MCU which can be replaced by Attiny2313 MCU with minor modifications of firmware.
To make program work you event don’t need to connect device to computer COM port. You can store images in other master MCU EEPROM memory Each received byte from UART is immediately sent to 8 LEDs, second byte to next 8 LEDs and so on. Bytes has to be sent one by one without delay. USART is working at 115200 baud, 8bits, no parity.
Demo movie (137kB);
Originals source svv.on.ufanet.ru
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September 7th, 2008 at 10:17 am
hi
i want use your code in my project and i dont under stand your code and shematic plz translate code and re draw sjematic for me
TNX
September 7th, 2008 at 9:00 pm
Please refer to: svv.on.ufanet.ru
November 11th, 2008 at 5:00 pm
HELLO SIR
THANK YOU ON THE PROJECT LED MATRIX
BUT
IWANT THE ASM FILE BY ENG.
PLS SEND THE MOD. FILE
THANK YOU
KHALED
July 2nd, 2009 at 7:29 pm
i want vhdl code for 5X7 led dot matrix display and schematic
can you help me?
my email: Archa_lupz@yahoo.com
thx
December 10th, 2009 at 1:50 am
wanna want to tell that i like your project, thank you so much . derkaoui849@hotmail.com
December 15th, 2009 at 9:03 pm
sir this is venkat .i want basic tutorial on led display. i have to write code for 144×15 matrix led disply.so if possible please send me the tutorial .
thank in advaance.