Search Engine www.edaboard.com

65 Threads found on edaboard.com: Led Matrix Pic
Do you mean "save all sentence in memory map " and just scroll it? Not the sencence, but the alphabet bitmap. The standard strategy is to program the code in different functional layers: In short, one to define the character (in general, in static memory), other to scan each character, and another to scan
Besides wrong mux counter output polarity, if you want to light more than one led in a column, the series resistors should be connected to the row rather than the column transistors, otherwise the current will be shared by a varying number of leds and cause intensity variations.
Anybody know how to control speed ? It is very fast. #include<pic.h> #include #define _XTAL_FREQ 20e6 __CONFIG(0x3F3A); char z,i; void pattern(char a,char b,char c,char d,char e,char f,char g,char h,char n) { for(z=0;z<9;z++) { for(i=0;i<10;i++) {
Don't know what the "segment delay" value actually is, but there should be no problem to run the code in real hardware without flicker. In case you are talking about flickering in the proteus simulation, I suspect a pure simulation problem. Adjust the timeout in the led display properties.
I needs your helps to design led DOT matrix DISPLAY USING pic MICROCONTROLLER. I get some nice video in youtube. please help me....
It is a C code. Not releated to compiler. Can be compiled by any C compilier for any target.
What else do you need to do in your project other then drive the led display ?
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 (...)
if you do a web search for pic and lcd display it will give you plenty of links for hardware and programs thanks for the response i want idea about led dotmatrix please give any link
i want to fetch RGB led matrix frames from SPI RAM and scan it @ 60hz. i have decided that one controller fetch data from SPI RAM and share it to other controllers through its USB port they will do scanning and PWM stuff. this will save complex h/w like dual port ram etc. any suggestion regrading this ???
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.
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!
Hello guys, This is my first post here, "plus" a newbie, so please be nice :P So I have 64 White leds multiplexed. I tested my matrix by connecting each column to GND and +5v (from Teensy) to each row one by one "without resistor". All worked well. Let me explain why without resistor. Before making the matrix, I tested all the (...)
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 (...)