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65 Threads found on Pic Led Matrix
Hi Programmers. i want to make Arabic Language led matrix display . And i have no idea where to start . I have made English led matrix display. 132529 132528
The 4017 can drive led's directly as long as it's only a few mA per pin. (Can't advise about the pic.) Did you intend to bias the PNP's so that one is turned off while the rest are turned on? Off=bias 4.5 to 5 V. On=bias 0 to 4.3 V.
Not clear, you need depict few more elaborated the the problem.
Hello, I am new to pic UC and i am in learning phase. well i am getting problem in simulating Dot matrix that when i display only static 6 characters on the 6 8x8 dot matrix. they look perfectly fine. but when i increase the dot matrix, let say 8 8x8 dotmatrix the characters dont display properly and (...)
I needs your helps to design led DOT matrix DISPLAY USING pic MICROCONTROLLER. I get some nice video in youtube. please help me....
Hi I am trying to interface pic+MAX7219 Dot matrix led Display. but until now i can not build any library for 7219 display.:cry: can anyone help me in building a library for pic16f877a+MAX7219 Dot matrix led Display.
In this case I'd use one of the following: 1. Microchip pic 2. Atmel AVR 3. Si-Labs 8051.
but its not working how can i circularly shift 2 dimensional array Why don't you post a link for a video that depicts the problem more clearly ?
hi, i created a 7X32 led matrix for text scrolling with the tutorial posted in Embedded Lab .com MCU IS pic 18F2550 CRYSTAL 20 MHZ 7 rows are scanned with cd4017 and goes to uln2803 and to matrix 32 columns are driven by chained 4 74hc595 shift registers I can scroll text from right to left without any problem (...)
if you do a web search for pic and lcd display it will give you plenty of links for hardware and programs
hi frndzzz, i am trying to do some fast data communication project... serial UART of pic not fulfilling my requirement... so it possible i can send data from one controller to other controller using their USB port????? thx
talking electronics have a good display using pic has six buttons for up,down,left,right,store and delete.check it out. just google talking the best.
I have seen this driver board along with some MCU and RTC clock chips. Can i use it as 8x8 matrix board with my pic ? Because on the site they have defined it can work with ICSP & Attiny Atmel MCU. Please confirm me can i use it with pic MCU ? us
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 (...)
Hello Kanna, I had done an experiment in past with pic18F4550 and 8x8 led matrix display. I had implemented text scroller. You can find this post at following url: You will find source code, schematics and firmware example. If you still have any question please dont hesitate to ask. Regards
Hi all. I am working on led dot matrix produce by Sure Electronic which the board uses Holtek chip (HT1632). Does anyone know on how to develop program for this chip? Currently I am using pic16F877A. I am not very familiar with pic. I search for information on the net and most of them recommend SPI module. Here is the (...)
Good job!Now,i driver one 32x256RGB led matrix display.but i not use pic MCU and TLC5940.however,i think you are doing very nice project!if you can drive more area,and add communication,PC message editer software,it's will be perfect!
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
in my project i use scrolling matrix led...anybody tell how to interface with pic to matrix led and how to write program for that........
Hi, I just finished of with my development board. I'm using Proton 7 for compiling and the problem is that the led matrix I've connected with the zif adapter to toggle isn't working. I checked all the points of testing and it's working fine. I tried my chip on my friend's db and the led matrix is toggling up. Can anyone (...)
You can see Dot matrix 8x8 or led 16X8. This is for pic, you can see the logic to multiplexing and shifting character.
I'm not try yet this chip, TLC5940. I only have MAX7219.
I have another led matrix has 12x12 pin. can you tell me how can i find connect this to a pic.
Thanks for your time and concerns. I just gone through the link.I got the point. I want to display Real Time Clock using timer1 (32.768KHz) of pic16F1937. Do you have any idea Regarding this? If you want to use seperate RTC chip with option for battery backup see
hai fnds, i am new to pic programming my assignment is to do an embedded c pgm to display signboard.......which we usually use in banks to display tokens.... pls help me in doing this assignment.......
I am upto the same task but will use pic micro controller I will let you know as soon as i am done with this
hello even though I used the program applied for by you here in this link: but in the simulation program does not display the default message!! You said that its works very well! how her, I will send you the file later proteus, and c + +,I've used pic 16f877A, and I did the same assembly correspo
hi, actually i made 9 my own led dot matrix of 5*5 but i need a assist in logic how can i control all of them using a single uc either a atmega8 or 16f877a whether it is possible are not?
Yes thats the way to connect more than one 74HC595 ---------- Post added at 22:28 ---------- Previous post was at 22:23 ---------- I will get back to you after checking your code ---------- Post added at 23:25 ---------- Previous post was at 22:28 ---------- M
Hello I build led matrix display based on 16F876 and have problem with resetting pic in most of the time when neon light is turn off in the room and pic is connected to PC. When PC and pic are disconnected everything is ok. Also every time PC is turn off, pic is reset or gets stuck. Here (...)
16 seven segment, every seven segment have 8 output. So, can do matrix connection in form 16X8 matrix. Here example 16X8 matrix (but in led). Other option, you can extend output using shift register 74595.
Hi, I'm building an led display from a group of 5x7 matrices. I'm building it in stages as I have got to grips with pic programming, shift registers, multiplexing etc. My next challenge is understanding how to power it though, and I'm having no luck finding anything to help me on the web. I will be running about 10 5x7 matrices, lighting them a
Scrolling Dot matrix led Display using 8051 / 8051 Projects / Downloads : 8051 Microcontroller Projects AVR pic Projects Tutorials Ebooks Libraries codes
hi, can any one help me to build a moving display using pic 16F877 and four 5x7 led matrix in c (MikroC) Thanking You Soina
Hi! Thank you for your help me. I would like writing new program, but is it very difficult. I can not choice AVR or pic. I learned a little bit "C", but lot of program Basiccom, or assembly. If you send me source codes and they help me. Thanks. I am waiting your link. ---------- Post added at 08:54 ---------- Previous
Hi everybody Like to make a scrolling message (using led matrix) in mikroc (pic16f877a) pleas help me how can i make it can you anyone put the sample code ? thanks in advance
Vinod, your code looks woefully inefficient using entirely too much memory resources of the pic. :) You might want to try and optimize the code by thinking "how can I do this with 5 lines of code instead of 50" :D
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. (...)
im task to build a 14rows and 40columns led matrix.. as of now i have build a 10x40 led matrix display.. what should i do? im using 74hc595 in my columnss and 74ls154 in my rows with tip147.. and my scroll should be scroll to right and left.. and in static mode.. and also do some blinking.. anyone have a code for this (...)
//pic 8char dotmatrix, switchable to static-scrolling //prg lenght 1077 words, made by zuisti, 29.08.2007 //for a simple and fast PROTEUS simulation I am not using line drivers ! #define COMMON_CATHODE #define BUFFERSIZE 56 //max. 54 chars (and 2 gap space) for scrolling message char buffer; //display buffer: 8 chars +
pls visit Downloads / 8051 Projects / Scrolling Dot matrix led Display using 8051 : 8051 Microcontroller Projects AVR pic Projects Tutorials Ebooks Libraries codes
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
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Dear Experts, I want to display two lines (10 characters in each line) in led Dot matrix arrays (in each line there will be characters and numbers, e.g DATE 16 July). The content that will be displayed in the matrix will be provided by either a keypad (3X4 keypad) or from a PC. Please suggest me: 1. Which pic (...)
Hi nobie ! The "-" pole of the battery you should connect to GND and pin 5 (Vss) of the pic .
Great :) I will have ta start a new topic on nonmultiplexed scrolling text display, got sick 'n tired of silly requests oh schematics and code (will post only relevant parts of circuit) :D
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
Hi edaboarders, I do not really understand how to use the ULN2003a for my dot matrix project. The matrix led that I have is common anode, I connect the PORT B of my pic to the ULN2003. The output of the ULN goes to the row of the matrix, the PIN 9, of the ULN is connected to +5V and the PIN 8 to GND. (...)
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
hello i have made a new web page recently, showing these two projects, and everything else that I have. I also have my own BBS now: I would welcome discussion about: -led multiplex -low power pic circuits: dc/dc converter, small batteries, solar cells -unusual clocking methods, fo