PIC16F628A LED Chaser

Introduction

This neat little circuit provides 8 LEDs directly driven from the PIC along with a single mode control switch. The firmware elsewhere on this page drives the LEDs with a 5 bit PWM signal providing each of the 8 LED channels with four levels of intensity; off, dim, mid, bright. A number of sequences are programmed into the firmware to provide some interesting visual effects and chase sequences, including the classic effect seen on the car in the Knight Rider TV series (Original Source - picprojects.org.uk).

PIC16F628A LED Chaser YouTube Video

Completed circuit of the PIC16F628A LED Chaser

PIC16F628A LED Chaser When Running

PIC16F628A LED Chaser Schematic

PIC16F628A LED Chaser Downloads

Download Source Code
Download Compiled Hex (Ready to program)
Download Schematic
All in one zip

Comments Area

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

Published By : Rohit Ahuja Added Date :1/12/2021 1:32:29 PM Hi there, i have a question do you know how to edit hex files, i want separate hex files for separate effects. Admin Reply : Hi, Sorry for the delay in reply due to bad health condition. It is difficult yo edit the hex file. You can download the source files and edit them for different patterns. First you will need to understand the existing code before you change it.
Published By : Sid Added Date :6/8/2019 7:34:07 AM Hello is it possible to default the chasing mode to one mode every time the circuit is powered on? Admin Reply : Admin reply is pending
Published By : Mike Added Date :3/26/2019 9:09:27 AM Works very well. I used PIC 16F628A, programmed it on a PIC-K150 programmer. The pushbutton allows you to skip to the next effect. I also noticed if you hold down on the switch, it will enter a "mode-select" menu. Very cool project. Admin Reply : Thanks for the comment Mike, Yes I also noticed this function. This is a great project. The original website I found this project is [https://picprojects.org/projects/picprojects.htm] Credits should go to the original awesome author :D
Published By : Jay-VietNam Added Date :2/11/2019 2:53:04 AM Is it possible to HARD WIRE a sequence so it runs each and every time the unit is powered up? This is say it would appear to be as a single, repeated, sequence whilst ignoring all the other programmed sequences? Thank you. Admin Reply : Admin reply is pending
Published By : Gregorio Paderes Added Date :1/15/2019 2:03:17 PM hi admin do you have another project using pic16f628a, i really appreciated it , Admin Reply : Hi Gregorio, Thanks for the comment, Are you looking for more LED Chaser projects?
Published By : Gregorio Paderes Added Date :12/21/2018 8:59:43 AM thanks so much to the people who created this program there is a lot of choices for what kind of light chaser you want to set to watch..nothings wrong in the program its working well to my system i used pickit 3 to program the pic16f628a. Admin Reply : Hi Gregorio, Thanks a lot for the comment.
Published By : Chintan Palav Added Date :6/25/2018 2:26:55 PM Nice Project.. and Thank you for providing all details.. i want to do one change in this project that i want to change patterns when i off-on power switch, is it possible? if possible pls help me Thank You again.. Admin Reply : Admin reply is pending
Published By : Ernst Added Date :6/6/2018 11:48:02 AM This is for mostly all of the people here, If you can't SEEEEEEEEEEEEEEEEEEEEEEEEEE at the top of the page are all of the downloads that you need and have the KNOW HOW that you need a programming circuit which is not given here and a programming software that you will need to open the files so that you actually programme the ic (in this case the PIC16F628A) THEN my dears, please don't attempt to build this, cause you are to freakin dumb for that!!!!!!!!!!!!!! xD P.S. Admin/s sorry for me being so straight forward Admin Reply : Admin reply is pending
Published By : random Added Date :2/2/2018 11:48:23 PM need to undertand the code Admin Reply : Admin reply is pending
Published By : JMiller Added Date :8/21/2017 4:20:54 AM Please I want to know all components of the Circuit board and simulation circuit. Please Admin Reply : Hi JMiller, Thanks for the comment. All the components are mentioned on the schematic itself. here is the link : http://www.manelsoft.com/projects/files/PIC16F628A_LED_CHASER_SCHEMATIC.pdf Sorry, The simulation circuit is not available :(
Published By : Subhrangsu Chandra Added Date :12/17/2016 11:32:05 AM I know ALP but no idea how I can use the ALP at any microcontroller. Please tell me what is the necessary software to open the attached source code here with? Admin Reply : Inside the source code f0lder, you can find the file pwmc_main107.asm (This is the assembly code of this project) You can edit this assembly code using MPLAB IDE
Published By : Edi Added Date :11/27/2016 9:45:52 AM Kau masuki codenya pakai alat apa ya mas Admin Reply : Hello Edi, please submit your question in English :)
Published By : YO NO Added Date :10/28/2016 4:35:21 PM merci merci Admin Reply : Admin reply is pending
Published By : kreem adhm Added Date :8/6/2016 9:21:20 AM OK you are 1st ENG Admin Reply : Thank you kreem!
Published By : kreem adhm Added Date :7/25/2016 9:25:28 AM need code Admin Reply : Hi kreem, You can download the source code from the download links above the page
Published By : prasanth v p Added Date :6/9/2016 3:30:28 PM thanks Admin Reply : Admin reply is pending
Published By : driss Added Date :3/4/2016 10:28:36 PM send me please code source for this projects Admin Reply : Admin reply is pending
Published By : sivakumar Added Date :1/2/2016 10:23:34 AM Sir, this is a nice project Admin Reply : Thank you sivakumar.
Published By : Anyamela Added Date :11/30/2015 12:07:23 PM I Complet Thic Circuit But No Work.Icpic16f628 Admin Reply : Hi, Anyamela. What is the issue you are facing? Please send more details.
Published By : v.thaniskumar Added Date :2/4/2015 8:02:55 AM plz hex id Admin Reply : Admin reply is pending

Published By : Rohit Ahuja
Added Date :1/12/2021 1:32:29 PM

Hi there, i have a question do you know how to edit hex files, i want separate hex files for separate effects.

Admin Reply : Hi, Sorry for the delay in reply due to bad health condition. It is difficult yo edit the hex file. You can download the source files and edit them for different patterns. First you will need to understand the existing code before you change it.

Published By : Sid
Added Date :6/8/2019 7:34:07 AM

Hello is it possible to default the chasing mode to one mode every time the circuit is powered on?

Admin Reply : Admin reply is pending

Published By : Mike
Added Date :3/26/2019 9:09:27 AM

Works very well. I used PIC 16F628A, programmed it on a PIC-K150 programmer. The pushbutton allows you to skip to the next effect. I also noticed if you hold down on the switch, it will enter a "mode-select" menu. Very cool project.

Admin Reply : Thanks for the comment Mike, Yes I also noticed this function. This is a great project. The original website I found this project is [https://picprojects.org/projects/picprojects.htm] Credits should go to the original awesome author :D

Published By : Jay-VietNam
Added Date :2/11/2019 2:53:04 AM

Is it possible to HARD WIRE a sequence so it runs each and every time the unit is powered up? This is say it would appear to be as a single, repeated, sequence whilst ignoring all the other programmed sequences? Thank you.

Admin Reply : Admin reply is pending

Published By : Gregorio Paderes
Added Date :1/15/2019 2:03:17 PM

hi admin do you have another project using pic16f628a, i really appreciated it ,

Admin Reply : Hi Gregorio, Thanks for the comment, Are you looking for more LED Chaser projects?

Published By : Gregorio Paderes
Added Date :12/21/2018 8:59:43 AM

thanks so much to the people who created this program there is a lot of choices for what kind of light chaser you want to set to watch..nothings wrong in the program its working well to my system i used pickit 3 to program the pic16f628a.

Admin Reply : Hi Gregorio, Thanks a lot for the comment.

Published By : Chintan Palav
Added Date :6/25/2018 2:26:55 PM

Nice Project.. and Thank you for providing all details.. i want to do one change in this project that i want to change patterns when i off-on power switch, is it possible? if possible pls help me Thank You again..

Admin Reply : Admin reply is pending

Published By : Ernst
Added Date :6/6/2018 11:48:02 AM

This is for mostly all of the people here, If you can't SEEEEEEEEEEEEEEEEEEEEEEEEEE at the top of the page are all of the downloads that you need and have the KNOW HOW that you need a programming circuit which is not given here and a programming software that you will need to open the files so that you actually programme the ic (in this case the PIC16F628A) THEN my dears, please don't attempt to build this, cause you are to freakin dumb for that!!!!!!!!!!!!!! xD P.S. Admin/s sorry for me being so straight forward

Admin Reply : Admin reply is pending

Published By : random
Added Date :2/2/2018 11:48:23 PM

need to undertand the code

Admin Reply : Admin reply is pending

Published By : JMiller
Added Date :8/21/2017 4:20:54 AM

Please I want to know all components of the Circuit board and simulation circuit. Please

Admin Reply : Hi JMiller, Thanks for the comment. All the components are mentioned on the schematic itself. here is the link : http://www.manelsoft.com/projects/files/PIC16F628A_LED_CHASER_SCHEMATIC.pdf Sorry, The simulation circuit is not available :(

Published By : Subhrangsu Chandra
Added Date :12/17/2016 11:32:05 AM

I know ALP but no idea how I can use the ALP at any microcontroller. Please tell me what is the necessary software to open the attached source code here with?

Admin Reply : Inside the source code f0lder, you can find the file pwmc_main107.asm (This is the assembly code of this project) You can edit this assembly code using MPLAB IDE

Published By : Edi
Added Date :11/27/2016 9:45:52 AM

Kau masuki codenya pakai alat apa ya mas

Admin Reply : Hello Edi, please submit your question in English :)

Published By : YO NO
Added Date :10/28/2016 4:35:21 PM

merci merci

Admin Reply : Admin reply is pending

Published By : kreem adhm
Added Date :8/6/2016 9:21:20 AM

OK you are 1st ENG

Admin Reply : Thank you kreem!

Published By : kreem adhm
Added Date :7/25/2016 9:25:28 AM

need code

Admin Reply : Hi kreem, You can download the source code from the download links above the page

Published By : prasanth v p
Added Date :6/9/2016 3:30:28 PM

thanks

Admin Reply : Admin reply is pending

Published By : driss
Added Date :3/4/2016 10:28:36 PM

send me please code source for this projects

Admin Reply : Admin reply is pending

Published By : sivakumar
Added Date :1/2/2016 10:23:34 AM

Sir, this is a nice project

Admin Reply : Thank you sivakumar.

Published By : Anyamela
Added Date :11/30/2015 12:07:23 PM

I Complet Thic Circuit But No Work.Icpic16f628

Admin Reply : Hi, Anyamela. What is the issue you are facing? Please send more details.

Published By : v.thaniskumar
Added Date :2/4/2015 8:02:55 AM

plz hex id

Admin Reply : Admin reply is pending

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