Basic Level     Skills: Not specified    
Author
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

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

497.31 kB

  Downloads

76705

  Rating
 

Comments

Okechukwu
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.
  
ajay_bhargav
05 Jul 2014: 06:47 AM
No Its a basic scrolling matrix project If you add effects to it please share back with us.
  
rawineak
09 Jul 2014: 07:55 AM
Sir.
I need led rgb strip ws2812 text moving scrolling 32x100 pixel use on 89c5131. Thank regard
  
rawineak
09 Jul 2014: 08:01 AM
Sir , I want led rgb strip ws2812 text moving scrolling 50x100 pixel use on 89c5131. thank regard
  
ElectronicManiac
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..
  
ajay_bhargav
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.
  
ElectronicManiac
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?
  
tom12345
15 Aug 2015: 15:19 PM
In your code
dot matrix.c(184): error C202: 'AddWr': undefined identifier

Please help
  
ajay_bhargav
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..):
  
Imammusthofa
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
  
ajay_bhargav
14 Mar 2017: 08:41 AM
@Ravi We do not have a layout, Why not make one and share it?
  
lokesh kadali
05 Dec 2018: 04:27 AM
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
  
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Conversation

ExperimenterUK
Mon Dec 03 2018, 05:17 PM
Please post questions in the forum. The chat box is for chat
Mon Dec 03 2018, 06:43 AM
help!me!
help! I don't understand busy flag!
Sun Dec 02 2018, 08:01 PM
ile
hello
Mon Nov 12 2018, 05:58 AM
Pavan_user
i have seen your replica of I2C programming using AT89C51 but i am unable to understand the "ack_bit" variable usage ...looks like it is always 1...can you elaborate how acknowledgment is working....
bgk3678
Tue Nov 06 2018, 02:36 PM
kindly any one give solution for my problem
ExperimenterUK
Mon Nov 05 2018, 09:48 PM
Pins high is the normal state. You need a program to set them low
mayengbam
Sun Nov 04 2018, 05:41 PM
hello, i am niranjoy, alll the port of my 8051 is always high, even i erase all the program. why is it so happen and what is the problem. any one please help me!
Sun Nov 04 2018, 02:16 PM
BASAVARAJ g kudamble
hi I am interfacing GSM 300 to 8051 microcontroller to receive message from mobile
ExperimenterUK
Sat Sep 29 2018, 06:28 PM
Please post questions in the forum.
Sat Sep 29 2018, 11:26 AM
Ashfaq Ch
hi i have some AT89C51RC microcontrollers already programed. some one help us to how to download from AT89C51RC and after study and edit all corractions reload to AT89C51RC controller

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cadetjeff
Fri Dec 07 2018, 10:11 AM
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Sun Dec 02 2018, 01:12 AM
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Mon Nov 26 2018, 05:18 AM
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Mon Nov 12 2018, 03:14 PM

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