1000 Threads found on edaboard.com: Pic Led Matrix
Just program it in pic is easier. Or using an IC.
Electronic Elementary Questions :: 08-26-2004 01:54 :: sapaku :: Replies: 3 :: Views: 5131
I've got a 8x5 led matrix, with common anodes and cathodes lined up. Now, of course, I can command it from a uc (like a big pic, 16f877) but it's not too bright, because the pic can't really source too much current, and it has to be multiplexed.
So, I want to build a power level for it, with transistors. Of course, we can (...)
Hobby Circuits and Small Projects Problems :: 09-11-2007 18:49 :: izua :: Replies: 1 :: Views: 1352
Microcontrollers :: 10-26-2008 15:28 :: CMOS :: Replies: 4 :: Views: 1453
Did you check it?
PC Programming and Interfacing :: 01-24-2010 05:28 :: karesz :: Replies: 5 :: Views: 1182
i want to make big led matrix display but i dont know how to start
i know how to use pic .
pls can u help me ?
what is the standard siz of led matrix?
what alternative methodes do i have for making the display and what is the avantage and disadvantages of those methodes
Microcontrollers :: 01-28-2010 02:56 :: gere :: Replies: 0 :: Views: 615
start with smaller one, maybe this topic help you.
Microcontrollers :: 01-28-2010 07:03 :: erio :: Replies: 3 :: Views: 3401
i am about making led matrix project like mr ilker_32 posts here
but my problem is the short memory of pic 16f877a
i need help for using an external memory like 24c64 to save my text in it
and how to programe it via rs232 and how to call my messege saved into 24c64 and display it on m
Microcontrollers :: 07-03-2010 18:11 :: abdoupirat :: Replies: 4 :: Views: 906
i need help about my project.. it uses pic16f84a.. any idea? source? links?
plz plz plz.. i need help :(
Microcontrollers :: 09-25-2010 15:26 :: usern :: Replies: 5 :: Views: 984
I am designing a 8x8 led matrix with RGB leds. So 192 leds altogether.
I want to control them using PWM so that I can have all of the colors.
I am going to use a pic with 5-8 PWM channels.
I am looking at some different led drivers from Allegra and also from ST Microelectronics. (...)
Microcontrollers :: 02-07-2011 15:15 :: Nora :: Replies: 0 :: Views: 800
I have another led matrix has 12x12 pin.
can you tell me how can i find connect this to a pic.
Hobby Circuits and Small Projects Problems :: 05-08-2012 18:58 :: Sallam :: Replies: 13 :: Views: 7009
The pic you want to use can drive up to 13 leds (13 I/O pins are available), but if you intend to use some I/O pins for other purposes you should use a led driver. A led driver is an integrated circuit that decodes an input code and outputs high or low (based on the code you send) on the pins used to drive the (...)
Microcontrollers :: 02-12-2013 15:16 :: T3STY :: Replies: 2 :: Views: 476
led matrix (france)
Software Links :: 02-11-2003 04:28 :: 0levanhoc :: Replies: 1 :: Views: 3037
I have to build a led matrix for a large size display with 56x192 led's.
This matrix have to be split in 12 Modules a 14x64 led.
All parts have to be SMD Parts.
I am thinking to use a uC with 100 pin count for each module and a basic module to send the data per master/slave spi.
The uC (...)
Professional Hardware and Electronics Design :: 02-28-2004 03:51 :: Divemen :: Replies: 0 :: Views: 1569
So I have built a 7x48 led matrix. I have the Basic Stamp 2 IC controller and have 6 - Max 7219's cascaded each running a 7x8 section of led's. I have run into a wall with the code and cannot get any help in creating the code to pass thru each chip. Believe me I have begged! The sign runs but each 7x8 section runs it's own letters (...)
Hobby Circuits and Small Projects Problems :: 07-01-2005 19:19 :: jnln :: Replies: 1 :: Views: 1922
Just got 16 of these
LM-0355MVWB 5x7 led matrix
I think they are from Rohm , but can not find any pinout/DS
They are on a used PCB , and seems to have 2 x 9 pins like a DIP.
Well seems like one pin is missing (pin 17).
Anyone have some suggestion ??
Hobby Circuits and Small Projects Problems :: 07-09-2005 14:15 :: Bingo600 :: Replies: 4 :: Views: 2324
hello, i have a problem with my program. now i'm doing 8x8 led matrix display system that can display alphanumeric characters . my question is, how can i simulate my source code to display the led. i mean how can i know either my led is showing what i want or not. are there any special software to display (...)
Microcontrollers :: 09-01-2005 13:58 :: cikokui :: Replies: 3 :: Views: 2114
well i made a led matrix studying many posts from this forum try 'search' u will get many specially this one
but i got the scrolling idea from this code
// led display
Microcontrollers :: 09-03-2005 03:14 :: ful babu :: Replies: 3 :: Views: 5454
can any one help me too write a program too drive 90x90 led matrix ???
Microcontrollers :: 09-03-2005 06:22 :: electronic6000 :: Replies: 1 :: Views: 807
I have a led matrix produced by APOS with these features:
20 package/ 1 line
I see many text on the PCB
APOS FIT DISPLAY, its so small!! 20 cm (width).. and I can't find datasheet or information about it.
Any one help me?
Professional Hardware and Electronics Design :: 09-09-2005 08:35 :: manbt :: Replies: 0 :: Views: 1218
Can I try mains frequency as the timing device for refreshing small led matrix?
Can you suggest a tested scheme?
Like that can I use a 555 oscillator for controlling scroll speed?
I shall appreciate any help.
Microcontrollers :: 09-10-2005 18:05 :: Asok Sankar Rudra :: Replies: 2 :: Views: 759
You will never get an answer if you put your post anywhere.
Well, read this topic:
PC Programming and Interfacing :: 10-17-2005 05:33 :: YUV :: Replies: 1 :: Views: 1504
hello everybody.. i've got a problem here where i can't see the display on my led matrix..
i'm doing a counter and using the led matrix as a display. i've writing a program using assembly languange.
i also checking the voltage between each ic and each output.. the voltage showed around 4~5V but the (...)
Microcontrollers :: 04-04-2006 22:10 :: arni_jamal :: Replies: 2 :: Views: 1637
There are three programs for the led matrix Display. I written them using Visual C++ 6.0 with MFC support. Hardware
PC Programming and Interfacing :: 05-16-2006 02:57 :: cuongquay :: Replies: 1 :: Views: 1068
I HAVE DONE A DIGITAL CLOCK PROJECT USING pic16F877,16X2 LCD DISPLAY AND THE COMPILER I USED picBASIC PRO IS WORKING NICE.BUT I WANT THE DISPLAY BIGGER. CAN THE LCD CAN BE CHANGED WITH SOME ADDITIONAL CIRCUITRY TO DRIVE led matrix.I HAVE SEARCHED THE POSTS.
LUCAS HAS PROVIDED A LINK WHICH CONTAINS THE INFORMATION (...)
Microcontrollers :: 09-10-2006 14:42 :: chandra2sekhar2000 :: Replies: 0 :: Views: 1150
Im using emu8086 microprocessor simulator, but can it simulate an 8x8 led matrix display? I have a project that uses these displays and I need to simulate it first before finalizing my work, I need a simulator that does these, please have me a link or upload such software..
Thanks in advance
Microcontrollers :: 10-18-2006 09:25 :: the_risk_master :: Replies: 0 :: Views: 2608
I want to drive an 8 x 8 led matrix display with the help of 1-2 ULN2003A, 1 ULN2803 IC. I can do the programming microcontroller and use 2 8 pin ports. How do I connect the matrix and the buffers?
Electronic Elementary Questions :: 02-10-2007 04:10 :: RollingEEE :: Replies: 2 :: Views: 4015
I want to Interface led matrix kit(SLS product) on expansion headers of UP3( Altera's ESDK) kit.The kit should be connected with the PC via RS232 on serial port.
The input to the board should be given via Hyper terminal from whatever characters Input from the keyboard should be displayed on the led matrix.
1)Please tell (...)
Analog Circuit Design :: 04-02-2007 10:17 :: shagy2003 :: Replies: 1 :: Views: 1602
I wanted to design and make an led matrix display that countinuosly repeats a message and pattern of lights of my choice as my schools project. I want, however, to be able to programme it with different messages (like "welcome to my school")and patterns in advance(like a little logo of the school that stays in the corner) and these sentence
Electronic Elementary Questions :: 07-22-2007 11:27 :: bamboozled :: Replies: 3 :: Views: 1218
I use 74Ls174 IC for my 7x6 led matrix display.But is too slow from PC (LPT)to led matrix.please any one help me.I use C coding to send message to matrix.
Microcontrollers :: 08-03-2007 06:50 :: ganesh_98422 :: Replies: 0 :: Views: 743
i have a led matrix that works fine
how would i cascade it and will this need any change in my program
Electronic Elementary Questions :: 12-26-2007 02:57 :: Ibaghdadi :: Replies: 1 :: Views: 659
i have a led matrix that works fine
how would i cascade it and will this need any change in my program
Microcontrollers :: 12-26-2007 03:11 :: Ibaghdadi :: Replies: 4 :: Views: 1628
plzzzzzzz help , i want to design large led matrix displays which are connected through ethernet and a pc and displays what the user set from the pc. plz tell the over view which is the best way to do so!
Network :: 01-30-2008 11:53 :: abhisek06 :: Replies: 0 :: Views: 592
Hai Every one.
Just have a look at The said software is just excellent with which one can create ones own designs in 6x6 led matrix without knowing how to write a program. I am looking for similar software which can write programs in 89C52 / 89C55/ 89S52 / 89S55. the size of the matrix should be variabl
Software Requests :: 06-07-2008 08:30 :: pranam77 :: Replies: 0 :: Views: 371
i am in doubt that , if i send a series of string to display on led matrix board from PC through microcontroller to matrix display , do i need to first program the how the string going to display (in column and row for each single character) on the led matrix board first into microcontroller or i only (...)
Microcontrollers :: 04-09-2009 09:00 :: TagMyTech :: Replies: 5 :: Views: 3715
Now this My 8x8 led matrix Project with the help of (( movie_freak What is this Error
I attached The Corrupted Project
I want to Make this projest
Microcontrollers :: 05-09-2009 10:40 :: smsm3650 :: Replies: 0 :: Views: 3146
pic led message scrolling board with pc keyboard as character input device
Hobby Circuits and Small Projects Problems :: 05-25-2009 22:00 :: ehico16 :: Replies: 1 :: Views: 2348
led matrix with micro c:
I carried out the project in the language of micro c
It's a led matrix , it shows more than a letter or a sentence but I couldn’t show more than two letters.
I would be grateful if you could help in correcting the mistake in the program to make it able to show more and in (...)
Microcontrollers :: 05-29-2009 08:30 :: makel :: Replies: 1 :: Views: 1166
Can anyone help me please with the coding of an 8 by 8 led matrix form moving message display.....
Thanks for your anticipation.
Microcontrollers :: 07-25-2009 03:50 :: LegolasMicrochip :: Replies: 1 :: Views: 1929
It would be very difficult using a diode for three reasons:
1. The voltage is AC between the backplane output and the pixel output. If you rectify either one alone they will always have the same voltage on them.
2. You would have to add a capacitor to filter the DC pulses and the IC would not be capable of providing enough current to charge i
Microcontrollers :: 08-26-2009 18:46 :: betwixt :: Replies: 10 :: Views: 3838
Look at this thread, It has a lot of information about scrolling.
Microcontrollers :: 09-09-2009 13:56 :: pop48m :: Replies: 18 :: Views: 8063
8X8 RGB led matrix - common anode
4 different size
USD23 for one, free shipment, pls contact for more detail
ASIC Design Methodologies and Tools (Digital) :: 10-13-2009 08:53 :: flamesolution :: Replies: 0 :: Views: 1788
I need to build a led matrix to scroller a text which given by the pc as my high school project. I am using MAX7219 IC to control the matrix. I am using no decode mode. I need to know the Mikroc c coding part to access individual bits of the MAX7219. It is a 5*7 matrix , and if I need to switch on only 1st ,3rd and 5th (...)
Microcontrollers :: 11-21-2009 09:16 :: SAWULA :: Replies: 1 :: Views: 1032
Have a look at these links with similar topic.
Microcontrollers :: 12-10-2009 10:05 :: pranam77 :: Replies: 2 :: Views: 917
Hi I'm currently working on my first led matrix. The problem I have run into is how to power it correctly. The Rows of 19 are the cathode and the columns of 13 are the anode. The led's are standard red. I estimate that I'll need 260 ma per column to correctly power the matrix. I intend to use 2 uln2803's to sink the rows. My (...)
Hobby Circuits and Small Projects Problems :: 12-21-2009 00:11 :: cid144 :: Replies: 0 :: Views: 1169
Just have a look at these threads with "led message display" topic discussions. may help you..Cheers
Microcontrollers :: 01-05-2010 08:13 :: pranam77 :: Replies: 1 :: Views: 6662
hi evevy body
I studying about led matrix connect to computer use microprocessor 8051
who can help me about circuit and code wirtten by C
thanks for all
Microcontrollers :: 01-16-2010 09:40 :: thanhbk57 :: Replies: 3 :: Views: 948
Take a look at this picture ...
Microcontrollers :: 03-05-2010 19:45 :: hugo :: Replies: 2 :: Views: 1044
Hello to everybody in this forum
Actually, I am working on the led matrix board in which i am interfacing the AT keyboard using 89s52.Whatever I type on the keyboard must be displayed on display continuously as a string.
Now the problem is, I have to store the the character that is pressed on the keyboard
As 89s52 has only 256 bytes of
PCB Routing Schematic Layout software and Simulation :: 04-01-2010 04:06 :: tigerraj :: Replies: 1 :: Views: 1435
any help from experts for
Need RGB led matrix Pannel Design Help for FPGA
PLD, SPLD, GAL, CPLD, FPGA Design :: 04-05-2010 00:26 :: senthilkumar :: Replies: 0 :: Views: 966
please help me to build 8x48 moving led matrix display in software and hardware
Microcontrollers :: 04-17-2010 09:23 :: mbahaix :: Replies: 0 :: Views: 617