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265 Threads found on edaboard.com: Pic Led Matrix
Just program it in pic is easier. Or using an IC.
Electronic Elementary Questions :: 26.08.2004 07:54 :: sapaku :: Replies: 3 :: Views: 4189
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
#include <90s8535.h>
#include
// led display
#def
Microcontrollers :: 03.09.2005 09:14 :: ful babu :: Replies: 3 :: Views: 4927
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 :: 12.09.2007 00:49 :: izua :: Replies: 1 :: Views: 1220
Hi;
> do you design led display?
Yes, but only one-color, and only in Proteus (ISIS), using AVR and pic uCs.
However, my friends have builded my projects yet (with my help), are working as well.
A'propos Proteus:
> im not using proteus, but can i ask info on ISIS?
Yes, of course (also in a PM). Anyway, Proteus from Labcenter is an elec
Microcontrollers :: 21.05.2008 17:56 :: zuisti :: Replies: 86 :: Views: 39888
thx for reply im using pic18f452 @ 20MHz xtl ; can any body tel me relode value for this ......and how many colum or row max i can scan through multiplexing
Microcontrollers :: 26.10.2008 04:22 :: drbizzarow :: Replies: 4 :: Views: 1170
yes.. that cd4017 johnson thinking if i can use 4017 only without needing to use pic
PC Programming and Interfacing :: 21.01.2010 07:02 :: mayena_19 :: Replies: 5 :: Views: 969
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
tnx
Microcontrollers :: 28.01.2010 08:56 :: gere :: Replies: 0 :: Views: 470
hi all
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
tnx
Microcontrollers :: 28.01.2010 08:59 :: gere :: Replies: 3 :: Views: 2701
hello
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 :: 04.07.2010 00:11 :: abdoupirat :: Replies: 4 :: Views: 659
Hi Hearty,
Just read Rojo's post here :
Microcontrollers :: 13.08.2010 04:25 :: hugo :: Replies: 13 :: Views: 3070
I don't think you are getting any help with it like that. :(
Please be a little more specific... There are several links which guide you with pic programming.
There is an online book by MikroElectronika which contains many examples in the end...
pic Micro
Microcontrollers :: 25.09.2010 23:30 :: zia.newversion :: Replies: 5 :: Views: 705
which micro sir 8051,pic, avr ?
Business, Promotions, Advertising :: 13.11.2010 07:04 :: santoshaxl :: Replies: 9 :: Views: 2053
i made a 10 x 5 led matrix display using pic18f2550 and 10 bc548 transistor for 10 columns (negative supply) and 5 bc548 and 5 bc557 coupling for 5 rows(positive supply). positive supply is from a lm317 ic its the basic hardware
pic is configured as 8 bit internal oscillator without prescaler for better row scanning
i (...)
Microcontrollers :: 16.01.2011 05:41 :: anoopmb24 :: Replies: 4 :: Views: 941
I haven't used any matrix display but your circuit seems to be ok,
you just have to drive the leds using resistors to limit the current and with devices that can handle the current for the lest (ULN or transistors).
About your programming, I don't use pic at all i only use avr's but in any case it wouldn't be possible for someone else
to (...)
Microcontrollers :: 16.01.2011 16:43 :: alexan_e :: Replies: 50 :: Views: 7597
i have a ac supply with 1.2A.. is it enough for both pic and 595? and whats the output current of pic? can it accommodate the total current of 5 595? and another supply for my transistors?
Microcontrollers :: 12.02.2011 18:17 :: cuber18 :: Replies: 19 :: Views: 723
Hello-
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 :: 07.02.2011 21:15 :: Nora :: Replies: 0 :: Views: 588
nice picture but i don't know the connection on that...
when you give power to only 1 row how many leds can you light in all the connected displays?
Alex
Microcontrollers :: 21.02.2011 18:39 :: alexan_e :: Replies: 65 :: Views: 2826
I am trying to build a circuit that will run an 8x8 led matrix. The data for which leds should be lit is stored in a 74HC259 8 bit addressable latch.
I think I have got the basic block level circuit worked out (see attached diagram). A binary counter goes from 0 to 7. This produces the address for which the 8 bits of data are stored in (...)
Hobby Circuits and Small Projects Problems :: 06.07.2011 18:42 :: Simon27 :: Replies: 3 :: Views: 1155
no sir i worked out some PCB already but not good knowledge (ike pic programmer , analog inverter circuit using LM324 using Proteus ARES )
PCB Routing Schematic Layout software and Simulation :: 14.11.2011 12:20 :: thannara123 :: Replies: 12 :: Views: 1600
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 :: 09.05.2012 00:58 :: Sallam :: Replies: 10 :: Views: 3257
hey i want to use a 8*32(ie 8 rows and 32 coloumns) led matrix. can i use 89s52 microcontroller to drive my display. I don't want to use pic.
Microcontrollers :: 31.08.2012 17:43 :: hardikgupta21 :: Replies: 8 :: Views: 762
I understand I will need 11 PNP transistors for the anode and 11 NPN transistors for the cathode? Since it is row scanning, in my case, each NPN transistor has to sink up to 11x 20mA (assuming 20mA required to turn on each led) = 220mA ? Is this right?
Also, each PNP transistor has provide current for 1 led at a ti
Microcontrollers :: 29.08.2012 02:26 :: godfreyl :: Replies: 14 :: Views: 720
are you connecting this led'S to the microcontroller pin directly? are you using any transistor switch? which microcontroller you are using? Give me your circuit diagram....
Micro controller pins will handle only upto 25mA(this is for pic & may vary for diff type of uC) & if the current exceed it could damage the port pin...
Connect the anode of
Hobby Circuits and Small Projects Problems :: 12.11.2012 11:16 :: udhay_cit :: Replies: 3 :: Views: 557
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 :: 12.02.2013 21:16 :: T3STY :: Replies: 2 :: Views: 168
Hi,
Please, look at
There is a good implementation of a moving led display using pic uP but the principe used here may be adapted easyly to a 8051.
Regards.
Professional Hardware and Electronics Design :: 24.12.2002 18:29 :: pcduong :: Replies: 2 :: Views: 1740
Specify more about what resolution you have, or how many characters you will display, etc.
I think easys way to do it, is using 5x8 led dot array, you must put 16 together, and control it with a few logic and a microcontroler like pic, to control and comunicate it with a PC using serial port.
Hobby Circuits and Small Projects Problems :: 11.12.2002 14:32 :: penrico :: Replies: 18 :: Views: 13690
i try to make a rotating text on eight 7x7 led matrix displays with two max6952 IC's
how can i connect a microcontroller to this chip
( PINS DOUT, CLK, CS, and DIN)
Link to max6952
Please give me a schematic with software
Microcontrollers :: 15.06.2003 16:32 :: The Puma :: Replies: 1 :: Views: 1032
Hi there...:)
I am a final semester student, who is currently doing a project called Programmable Dot matrix Display System. My project work like this....
Short messages are read from textfiles then they are sent out in a serial communication method. There is one more thing you should know, my project didnt include pic and (...)
Hobby Circuits and Small Projects Problems :: 27.05.2004 10:57 :: cwt :: Replies: 3 :: Views: 2479
Hello ,
im trying to work with a two digit 5x7 matrix led .can any one give links or help on how to work it with a pic16f87x series in C language
thank you a lot
Microcontrollers :: 21.01.2005 20:39 :: ZeleC :: Replies: 4 :: Views: 4624
You are going to have to provide more information
if you want anyone to be able to provide much help.
You can find all of the electrical specs in the datasheet.
How are you driving the led's? The pic is only good
for 50ma, so if you are trying to drive 4-7 regular led's
directly, at say 10ma, you're going to have problems.
I'm (...)
Microcontrollers :: 13.02.2005 23:17 :: Nick C. :: Replies: 4 :: Views: 819
I would use a microcontroller with enough I/O ports, for example the pic 18F452, which has 34 I/O ports. Eight ports are dedicated to parallel slave port that can be connected to PC parallel port and the remaining ports used to drive the leds.
With a 10x10 matrix (10 I/O ports x 10 I/O ports), you can address each led by a (...)
Electronic Elementary Questions :: 17.02.2005 19:35 :: rkodaira :: Replies: 6 :: Views: 1414
Hi,
Search Elektroda forum:
................
Microcontrollers :: 20.03.2005 18:10 :: hugo :: Replies: 9 :: Views: 3917
Hello boys,
Does anyone used the max6953 to drive 4 5x7 led matrix displays? I would be very grateful for some sample code to address the max6953 from a pic(16f84A). I have difficulties understanding the protocol from the datasheets.
Thanks
Nikos Geronikolos
Microcontrollers :: 28.03.2005 15:46 :: ngeronikolos :: Replies: 4 :: Views: 910
Hello YUV,
your work looks very impressive.
Can you give some more details of the work you have done.
regards
Hi, Windom!
The signboard is quite simple, it's no sense to describe it.
The full color module has LVDS input inteface, ACEX chip (30K) which process data, and SRAM memory. Resolution of module is 64x64 pix
Microcontrollers :: 25.07.2005 12:09 :: YUV :: Replies: 52 :: Views: 14416
Hi all,
I have developed 12x8x8 led dotmatrix moving message display using pic16f877.
With this i have developed a PC Side software in VB to program the desired characters in serial EEPROM to be move on this matrix.
What you need to display on led matrix just type in textbox and press (...)
Microcontrollers :: 15.09.2005 16:57 :: dani :: Replies: 9 :: Views: 5165
'leddrvr' is a simple 7-segment led display driver system using pic
technology. The idea is to use minimum parts count to drive up to 4,
7-segment leds. This is also a useful introduction to some of the pic
microprocessor programming techniques insofar as 'leddrvr' exercises
many of (...)
Software Links :: 22.06.2006 06:59 :: bauer :: Replies: 1 :: Views: 1454
Hi,
I've posted this in a couple of forums, but it doesn't hurt to get as many opinons/ experiences as possible. I'm currently designing a development board for the pic, namely the 16F877A, since this has pretty much every peripheral I would need for pic development, loads of code space, and I/O's. I was hoping to design it to take multiple PI
Microcontrollers :: 22.08.2006 06:19 :: Buriedcode :: Replies: 20 :: Views: 5749
I just want to ask if this chip a stp16c596 is capable of running a dual color matrix located at the bottom of page by it's self in place of 2 74hc595 and 1 uln2803 to run it.I'am not too good with the datasheets and i'am unsure it can handle the current properly.I want to make a moving display with 8 or 10 of these matrix's and the fewer chips the
Hobby Circuits and Small Projects Problems :: 23.08.2006 20:45 :: bbarney :: Replies: 4 :: Views: 1677
while were on the subject does anyone know where I can find more info about this schematic,I have a picture but that's it looking for the code
Microcontrollers :: 14.01.2007 19:06 :: bbarney :: Replies: 24 :: Views: 7006
Hello everybody
I want to make one project that support to my Master programme.
That project is pic (16F628A) accepts the every character from usb and display on the led matrix array .The character display is at least 10 character and more how to accept the character .
Can anyone help me and Thanks.
Microcontrollers :: 10.08.2007 12:49 :: nck :: Replies: 3 :: Views: 3704
when using my pic simulator. there are outputs. but in implementing my design, there are absolutely no outputs visible. what is the correct way to connect pin 1 of pic16f788? what about pin 11,12,31,and 32? what about pin 13 and 14?:cry:
Microcontrollers :: 10.09.2007 19:54 :: programmer143 :: Replies: 4 :: Views: 3709
Hello Friends,
I am a hobbyist, and enjoyed my time learning pic microcontrollers. I have developed a barely basic, pic training kit for my friends. This kit is based upon pic 16F628A @20MHZ, and comes complete with a training manual, and PROTON-BASIC lite compiler. The training manual takes you through all the steps, from installing the (...)
EDA Jobs :: 01.10.2007 20:32 :: ameriq :: Replies: 1 :: Views: 1596
Lots of chatter and drawings..... here's a real example of complex PWM action on a single 8x8 RGB matrix connected directly to a single pic18. The code methods used here can produce 256 levels of color intensity per dot. The demo is a pic18F4525 on an Easypic4 board, programmed using Swordfish Basic:
www.youtu
Microcontrollers :: 03.02.2008 09:00 :: xorcise :: Replies: 68 :: Views: 17626
hi all,
i want to connect 4 7-segment display to pic 16F877A
the 1st is 4 digit
the 2nd is 3 digit
the 3rd is 3 digits
the 4th is 2 digits
and i want to use the minimum number of ports beacause i need it to connect sensors and the PWM port to motor
so i tray to do that with one pic
is it could>? and how?
thanks
Microcontrollers :: 27.01.2008 21:51 :: h.d :: Replies: 12 :: Views: 7061
Hi for all,
I use led driver (picture 1) drive led matrix 5x7 (one led is 5mm, picture I buy led matrix but larger with 2x5mm led (5x7, picture old le
Microcontrollers :: 30.01.2008 23:35 :: pasicr :: Replies: 8 :: Views: 5328
Hi,
Recently I got a gaming machine display board from ebay, It has 6 5x7 matrix ,32 bar graph led's and 4 MM5450 controllers. Is it possible to use these controllers with AVR or pic to make a moving display..? I am attaching the circuit and the picture of the pcb..
Thanks
Surej
Microcontrollers :: 19.03.2008 10:50 :: Surej :: Replies: 3 :: Views: 4572
Anyone please I need some help/idea on how to implement this pic/microcontroller project:
I need to implement a pic project ( possibly 16F84) that controlles 8 set of led that can turn ON/OFF and any of this led can, according to program parameter, display 7 color. In another words I need to controll a 8X7 (...)
Microcontrollers :: 25.04.2008 11:15 :: wafer101 :: Replies: 3 :: Views: 938
Hello,
I've just designed an RS485 network. The network was successfully tested by connecting two PCs to the network using the Hyperterminal.
In the second step of my ork, my goal is to control 2 matrix led displayer from the PC. The 2 matrix led Displayer are connected to the Netwok via an interface RS232/485 and (...)
PC Programming and Interfacing :: 22.07.2009 16:05 :: mouzid :: Replies: 6 :: Views: 2497
i need help in my final year project!
how do i interface an external eeprom to my pic and how do i write the source code?
my project is regarding about SMS display system where i have a led matrix(16x40) attach to a handset and it is also attach to the keyboard(ps/2).
so for the time being i need help in 2 things..
1) EEPROM
2) (...)
Microcontrollers :: 26.08.2009 16:57 :: edmondren_89 :: Replies: 3 :: Views: 3508
i need help to have tis project working. first of all i would like to say i am very new in this project.
i am using pic 16f877a with 20Mhz crystal osc. and Hi-Tech C
i need to have display a scrolling message.
can anyone help me . i know how to display only single character from A to Z
but i am not able to have a scrolling sentence
Microcontrollers :: 30.08.2009 06:18 :: edmondren_89 :: Replies: 4 :: Views: 1770
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