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59 Threads found on edaboard.com: Pic Led Matrix
hi, I have created a 32x7 led matrix using pic 18f2550 running at 48mhz(20mhz crystal) seven rows are scanned with cd4017 johnson counter 32 columns are driven by four 74hc595 shift registers scanning is done with a buffer array in timer0 overflow interupt at an in interval of 1.8 microseconds i made it to x-y addressable with the fo
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 (...)
hello all , I am new to micro controllers currently i know basics of circuit programing pics with hitec c & pic basic pro any one please help me to build a moving message display using pic and max 7219 using hitec c or pic basic pro
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. www.talkingelectronics.com.or just google talking electronics.com.all the best.
Hi, Have a look at these tutorials to see how its done - loads of others out
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 (...)
Hi, please tell me how to connect the wires in led DOT matrix,i don't know the pin configuration even after seeing that configuration,it is not working properly.but its working well in is VT12088BS series...Please help me...I'm a beginner.i want to interface with pic micro controller...i know how to connect,but in Dot (...)
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 (...)
Hi, I am trying to control individual RGB leds with the TLC5940 and pic24HJ502 microcontroller. I am programming in C (MPLAB). I have googled all possible documentation on internet, datasheet, TI programming flowchart & demystifying TLC5940. Not much progress yet, most of examples are on Arduino. I have to use pic24 and I (...)
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.
Hello, I am using pic16F1937. For the software platform MPLAB and Hi-Tech Compiler for C programming. I need to Display the real time clock with alarm settings on 8*8 led Dot matrix display(DE-DP10XV110 ). Can any one explain me the how to code for clock in C as well as the interfacing with 8*8 led Dot (...)
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?
Hi Foot. I have done similar project to this in the past and found that perhaps using an array of characters is not the best approach, I used the maximum size available to me in the pic which was a long long (32bits I think) which made life easier for if I wanted to dynamically update the display, although I can see that you are just trying to d
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 (...)
Hello, I am trying to use either 89S51 or pic 16f877a. I want to interface 4 rows of 4 seven segment display. means total of 16 seven segment display. Not getting proper idea. Also I have to interface matrix keypad 4x4. Please help with any of the above two micro. Eagerly waiting for the reply. Thank you very much
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 see here in the forum thread
had for a while some of Sure-Electronics' led display kit, an led unit with a HolTek HT1632 driving it and 4 * 8x8leds nicely presented. I also bought thier demo-board DE-
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
the deadline of our project is on march 11.. we are the one to build that project and buy the materials needed... our project is to make a 7x30 RGB led Dot matrix using pic16f84a microprocessor... that there is a scrolling text " IF IT'S EASY, Then IT'S NOT ECE" we are begging anyone to pls. help us any ideas on our project... like the (...)
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. (...)
Hi, You can learn it here; pic Tutorial* Thirteen - Multiplexed led's Nigel's pic Tutorial - matrix led Board with shift
//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 need help about my project.. it uses pic16f84a.. any idea? source? links? plz plz plz.. i need help :(
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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
Hi, I have done the same thing but using pic microcontroller. You are welcome if i can help you any way. Dani
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 (...)
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
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
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 (...)