PIC16F84A Matrix LED Display

Introduction and Images

Please note that I used MPLAB Versio 8.3 to build the code. (Not the latest version). If you have any error while compiling the code, please use an old version of MPLAB or use the compiled HEX files to program. You can download MPLAB V8.3 from above link.

PIC16F84A Matrix LED Display Youtube Video

Completed circuit of the PIC16F84A Matrix LED Display

PIC16F84A Matrix LED Display When Running

PIC16F84A Matrix LED Display Schematic

Extracted from the book - PIC Programming. Author - Mr. Sarath Premachandra.(4S5AS) City & Guild London. Credits goes to him.

Downloads for this Project

Download Schematic (PDF)
Download Schematic (ZIP)
Download Source Code and HEX
Display Custom Text Guide (PDF)
Display Custom Text Guide (ZIP)
All in one zip
Download MPLAB v8.3

Comments Area

Add your questions and comments here. Comments will be published after the admin approval

Published By : jumat Added Date :4/1/2021 7:45:14 PM hi, i want to know can i use this one to make normal LED patterns (for budurasmala) Thank You Admin Reply : Yes Indeed. You can use PIC16F84A for Buduresmala patterns. Try using RC Oscillator with an external V/R to control the LED pattern speed.
Published By : Ben Added Date :3/24/2021 6:12:36 AM I fabricated a PCB for this project using SMD's and it works great!!!! Admin Reply : Admin reply is pending
Published By : Daniel Added Date :2/12/2021 2:54:59 AM Please how do I set the alphabet to start displaying Admin Reply : Hi Daniel, By examining the .asm file, could you find the places of English characters on the code? If so, I can send you the other codes for full alphabet.
Published By : MUBASHIR Added Date :4/12/2017 6:05:48 AM Pls say the name of all components Admin Reply : Hello Mubashir, All the component names are mention on the Schematic itself.
Published By : C Raghavan Added Date :12/27/2016 1:11:20 PM I am trying to fabricate this circuit .Hope this will work satisfactorily. Admin Reply : Hello Raghavan, I tested this circuit and it was a successful project. But you have to be very careful about the connections because it is bit complicated. Good luck.
Published By : ganesh kumbhakar Added Date :12/24/2016 4:10:08 PM matrix is good Admin Reply : Thank you for the comment.
Published By : kreem adhm Added Date :12/11/2016 2:12:15 PM NEED CODE Admin Reply : Hello kreem, you can find the source code download links at the beginning of the page.
Published By : alfred k hide Added Date :10/26/2016 2:40:03 PM please send me all details i want to do this project Admin Reply : You can download the source codes from the links provided. I will add a description later for this project.
Published By : ARUP HALDER Added Date :9/26/2016 9:52:50 AM please let me know what i will do for 16x32 matrix display. Admin Reply : You will need to use a powerful microcontroller with some more memory and shift registers to build a 16x32 project.
Published By : ARUP HALDER Added Date :9/25/2016 7:43:45 PM If I want to use 16x16 matrix display use by the same circuit then what I will do. Admin Reply : Admin reply is pending
Published By : Dark Added Date :9/15/2016 8:43:37 PM Hi. I did the schematic and ran the simulation. I also copied the code but the matrix doesn't seem to be showing the expected result. Please help. I can show you the schematic in proteus if you want. Admin Reply : I didn't try this project yet on Proteus simulation. If you can , send me the Proteus project. I will try to check it.
Published By : Rafael Christian Aguilar Added Date :9/14/2016 4:10:03 PM Good project! But may I ask, how would I modify the source code if I want to display as much as 50 characters? Thank you very much! Admin Reply : Due to limitation of the memory of PIC16F84A Chip, difficult to add 50 characters. Need use another microcontroller.
Published By : kreem adhm Added Date :9/12/2016 7:28:07 AM cood Admin Reply : Source code download links are given on top of the page.
Published By : C Raghavan Added Date :7/27/2016 2:13:34 PM Very good project. Admin Reply : Thanks for the comment Raghavan
Published By : Harsh Malviya Added Date :3/5/2016 5:33:45 PM Pls acknowledge me with circuit and connection diagram of 3232 moving led display Admin Reply :* Admin reply is pending
Published By : Victor Added Date :3/1/2016 6:42:12 PM Thank you for your reply! This PIC has such a project: http://begstr.narod.ru/ Russian language. Good luck! Admin Reply : Admin reply is pending
Published By : min Added Date :11/12/2015 8:39:09 AM good idea Admin Reply : Thank you min
Published By : Victor Added Date :10/11/2015 4:05:00 AM Very good project! "This code can display maximum 30 characters" - the more limited this code? Admin Reply : Thank you for the comment Victor, to add more words, we need to change the PIC to more powerful one. For an example PIC16F877A
Published By : ishanka Added Date :4/12/2015 11:39:50 AM very good pic progam Admin Reply : Admin reply is pending
Published By : André Added Date :3/11/2015 5:28:20 PM what if i want it in 8x24? how can i modify the program to reach that? Thank you :) Admin Reply : Admin reply is pending
Published By : luis Added Date :1/17/2015 10:16:45 AM congratulation it's nice Admin Reply : Hi luis, Thank you for the comment.

Published By : jumat
Added Date :4/1/2021 7:45:14 PM

hi, i want to know can i use this one to make normal LED patterns (for budurasmala) Thank You

Admin Reply : Yes Indeed. You can use PIC16F84A for Buduresmala patterns. Try using RC Oscillator with an external V/R to control the LED pattern speed.

Published By : Ben
Added Date :3/24/2021 6:12:36 AM

I fabricated a PCB for this project using SMD's and it works great!!!!

Admin Reply : Admin reply is pending

Published By : Daniel
Added Date :2/12/2021 2:54:59 AM

Please how do I set the alphabet to start displaying

Admin Reply : Hi Daniel, By examining the .asm file, could you find the places of English characters on the code? If so, I can send you the other codes for full alphabet.

Published By : MUBASHIR
Added Date :4/12/2017 6:05:48 AM

Pls say the name of all components

Admin Reply : Hello Mubashir, All the component names are mention on the Schematic itself.

Published By : C Raghavan
Added Date :12/27/2016 1:11:20 PM

I am trying to fabricate this circuit .Hope this will work satisfactorily.

Admin Reply : Hello Raghavan, I tested this circuit and it was a successful project. But you have to be very careful about the connections because it is bit complicated. Good luck.

Published By : ganesh kumbhakar
Added Date :12/24/2016 4:10:08 PM

matrix is good

Admin Reply : Thank you for the comment.

Published By : kreem adhm
Added Date :12/11/2016 2:12:15 PM

NEED CODE

Admin Reply : Hello kreem, you can find the source code download links at the beginning of the page.

Published By : alfred k hide
Added Date :10/26/2016 2:40:03 PM

please send me all details i want to do this project

Admin Reply : You can download the source codes from the links provided. I will add a description later for this project.

Published By : ARUP HALDER
Added Date :9/26/2016 9:52:50 AM

please let me know what i will do for 16x32 matrix display.

Admin Reply : You will need to use a powerful microcontroller with some more memory and shift registers to build a 16x32 project.

Published By : ARUP HALDER
Added Date :9/25/2016 7:43:45 PM

If I want to use 16x16 matrix display use by the same circuit then what I will do.

Admin Reply : Admin reply is pending

Published By : Dark
Added Date :9/15/2016 8:43:37 PM

Hi. I did the schematic and ran the simulation. I also copied the code but the matrix doesn't seem to be showing the expected result. Please help. I can show you the schematic in proteus if you want.

Admin Reply : I didn't try this project yet on Proteus simulation. If you can , send me the Proteus project. I will try to check it.

Published By : Rafael Christian Aguilar
Added Date :9/14/2016 4:10:03 PM

Good project! But may I ask, how would I modify the source code if I want to display as much as 50 characters? Thank you very much!

Admin Reply : Due to limitation of the memory of PIC16F84A Chip, difficult to add 50 characters. Need use another microcontroller.

Published By : kreem adhm
Added Date :9/12/2016 7:28:07 AM

cood

Admin Reply : Source code download links are given on top of the page.

Published By : C Raghavan
Added Date :7/27/2016 2:13:34 PM

Very good project.

Admin Reply : Thanks for the comment Raghavan

Published By : Harsh Malviya
Added Date :3/5/2016 5:33:45 PM

Pls acknowledge me with circuit and connection diagram of 32*32 moving led display

Admin Reply : Admin reply is pending

Published By : Victor
Added Date :3/1/2016 6:42:12 PM

Thank you for your reply! This PIC has such a project: http://begstr.narod.ru/ Russian language. Good luck!

Admin Reply : Admin reply is pending

Published By : min
Added Date :11/12/2015 8:39:09 AM

good idea

Admin Reply : Thank you min

Published By : Victor
Added Date :10/11/2015 4:05:00 AM

Very good project! "This code can display maximum 30 characters" - the more limited this code?

Admin Reply : Thank you for the comment Victor, to add more words, we need to change the PIC to more powerful one. For an example PIC16F877A

Published By : ishanka
Added Date :4/12/2015 11:39:50 AM

very good pic progam

Admin Reply : Admin reply is pending

Published By : André
Added Date :3/11/2015 5:28:20 PM

what if i want it in 8x24? how can i modify the program to reach that? Thank you :)

Admin Reply : Admin reply is pending

Published By : luis
Added Date :1/17/2015 10:16:45 AM

congratulation it's nice

Admin Reply : Hi luis, Thank you for the comment.

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