Basic Level     Skills: Not specified    
Author website


Here is another feature packed and knowledge rich project from our friend Majoka. He is savior for many students. We already have his previous Dot Matrix display using 8051. This project is an update to the same project with some additional features and lot of study material.

Here is what you will find in the download package:
1. Dot Matix Display code in C
2. Dot Matrix Display code in Assembly
3. VB6.0 based GUI software with code
4. Schematics (both old and new design)

Here is a big list of change from the previous version:
On Hardware side:
  • ULN2803 array is used to sink the current of Leds in last version decoder was used to sink the current so the display was not so bright this time it is comparatively more bright at 5 volt.
  • 74HCT4514 decoder is used instead of 74ls154 both has inverted output to each other.

On Firmware (controller coding) side:
  • Keil4 is used for c coding
  • The firmware was in asm language in last project. In this updated version that is converted into c language as c is more professional and easy Language.
  • Scrolling speed can be changed and after changing it is saved in the EEPROM.
  • Full Duplex Serial Communication at 9600 baud rate.
  • Maximum 200 Character can be sent to Display.

On Software (GUI) side:
  • Visual Basic 6 is used to make this GUI.
  • Serial Port API is used that make it compatible to work on window xp, vista and window 7.
  • Auto Detect number of Serial Ports in PC.
  • Scrolling speed Slider bar is added to change the speed of scrolling message.
  • Software can be Hide in system tray

and many more..... Complete list with discription can be found in download package.

Here is a working video of this project

Tags scrolling matrix display8051 scrolling displaymatrix display using 8051LED matrix display using 8051 microcontroller

497.31 kB





05 Jul 2014: 01:19 AM
Sir, i want to know if Nasim Majoka's scrolling LED display has effects like flying, scroll back, come down, etc. Thanks.
05 Jul 2014: 06:47 AM
No Its a basic scrolling matrix project If you add effects to it please share back with us.
09 Jul 2014: 07:55 AM
I need led rgb strip ws2812 text moving scrolling 32x100 pixel use on 89c5131. Thank regard
09 Jul 2014: 08:01 AM
Sir , I want led rgb strip ws2812 text moving scrolling 50x100 pixel use on 89c5131. thank regard
31 Mar 2015: 15:24 PM
Sir, Please i am half way done with my project. Please tell me whether cathodes of led matrix are connected to the UDN2981 or the anodes?
please reply as soon as possible..
03 Apr 2015: 11:22 AM
@ElectronicManiac, Anode connected to UDN2981 and cathode is connected to ULN2803. Next time please post question in forum. Use post a question button on the right side.
03 Apr 2015: 19:21 PM
Thank you sir.
Moses Okoroafor
07 May 2015: 22:50 PM
I tried installing the file, but I keep getting an error message about some files missing. Also, the circuit diagram shows only the UDN2981 connection, but not the uln2803. care to comment?
15 Aug 2015: 15:19 PM
In your code
dot matrix.c(184): error C202: 'AddWr': undefined identifier

Please help
27 Aug 2015: 07:37 AM
@Moses Okoroafor, what is the error message.
@tom12345 did you include all the files in project?
Arang ariawan
07 Mar 2016: 02:17 AM
"It's work..thank.):
Any solution to make 8x80 or more with your project..sir
Sorry..i am big mouth..):
14 Sep 2016: 10:11 AM
Sir, it's hard to find 74HCT4514 here, can I change it with 74HC595?.
Please help. Thank you.
Ravi Ambaliya
02 Feb 2017: 10:46 AM
Plzz sir send me layout file in eagle
14 Mar 2017: 08:41 AM
@Ravi We do not have a layout, Why not make one and share it?
(Required; Min length 5)
(Required; will not be displayed)


Mon Mar 19 2018, 07:33 PM
sorry bedo.. maybe next time
Sun Mar 18 2018, 07:48 AM
Mourya Manojkumar
Please send me circuit diagram and PCB diagram
Thu Mar 01 2018, 05:49 AM
May you please help me with a code for programmable load shedding controlling 4 loads
Sun Feb 25 2018, 08:29 PM
i need of it
Sat Feb 24 2018, 03:35 AM
I want help for digital ic tester
Tue Feb 20 2018, 04:01 PM
Join up.. and post your problem
Mon Feb 19 2018, 11:17 AM
i needs help for my project
Mon Feb 19 2018, 11:16 AM
can i join you guys
Sun Feb 04 2018, 09:38 PM
Hi Dave. Good to see you.
Tue Jan 09 2018, 07:55 PM
It's been a few years since I poked around here - Hi all...



Tue Mar 20 2018, 09:51 AM
Mon Mar 19 2018, 07:48 AM
Fri Mar 16 2018, 10:12 AM
Tue Mar 13 2018, 02:21 PM
Sat Mar 10 2018, 12:09 PM
Fri Mar 09 2018, 06:00 AM
Thu Mar 08 2018, 07:56 AM
Thu Mar 08 2018, 02:57 AM


Guests: 59, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 37987
Newest member: LAMBO
Forum Activity
bedo123 Avatar
Posted By bedo123
Mon Mar 19 2018, 07:51 AM
guys right now I m in a lab, is there anyone to he...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat Mar 17 2018, 09:26 PM
Khadka_Bishal Avatar
Posted By Khadka_Bishal
Fri Mar 16 2018, 11:34 AM
I want to have a delay of 15 microsecond in 8051 u...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Mar 14 2018, 10:46 PM
Thanks a lot for all your help. It's really hard ...
kks Avatar
Posted By kks
Mon Mar 12 2018, 06:54 PM
As i said, it just needed it's own resistor. It's ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon Mar 12 2018, 05:07 AM
It isn't faulty, but very dim. I tried it both way...
kks Avatar
Posted By kks
Mon Mar 12 2018, 01:11 AM
It isn't faulty, but very dim. I tried it both way...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sun Mar 11 2018, 10:47 PM>...
kks Avatar
Posted By kks
Sun Mar 11 2018, 08:10 PM
It's Society car access system, where only the car...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sun Mar 11 2018, 07:53 PM
>As for the door locking again, you just have to s...