Scrolling Dot Matrix LED Display using 8051 (updated)
Author	Nasim Majoka
Author website	www.8051projects.net
Description	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
Image	no image available
Filesize	497.31 kB
Date
Downloads	79254
Download
Rating	10.0 - 1 vote

<< Previous [Electronic Voting machine with Managed Control Unit (Project Report Included)]

Back to list

[Door lock system using seven segment display (Assembly)] Next >>

Sir, i want to know if Nasim Majoka's scrolling LED display has effects like flying, scroll back, come down, etc. Thanks.

No Its a basic scrolling matrix project :) If you add effects to it please share back with us.

Sir.
I need led rgb strip ws2812 text moving scrolling 32x100 pixel use on 89c5131. Thank regard

Sir , I want led rgb strip ws2812 text moving scrolling 50x100 pixel use on 89c5131. thank regard

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..

@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.

Thank you sir.

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?

In your code
dot matrix.c(184): error C202: 'AddWr': undefined identifier

Please help

@Moses Okoroafor, what is the error message.
@tom12345 did you include all the files in project?

"It's work..thank.):
Any solution to make 8x80 or more with your project..sir
Sorry..i am big mouth..):

Sir, it's hard to find 74HCT4514 here, can I change it with 74HC595?.
Please help. Thank you.

Plzz sir send me layout file in eagle

@Ravi We do not have a layout, Why not make one and share it?

Sir
Can you please post code for GSM BASED SCROLLING LED DOT MATRIX DISPLAY along with code & circuit diagram in your website or send to my mail id :

[email protected]


Sorry for the inconvinience waiting for your reply thank you