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87 Threads found on edaboard.com: Led 8x8
Hi After going through some tutorial on driving 8x8 led matrix by MAX7219, I am trying to undertake simple practical tests. I have bought 4 cascaded 8x8 led matrix assembled with MAX7219. The arrangement of the setup is as per attached schematic. As a simple test I want to activate only one column of the (...)
Agreed, and the +5V connection to the ULN2823 isn't needed but a ground connection to pin 9 absolutely is. Pin 9 is NOT a power supply connection, that device does not need any internal power, strictly speaking is the current output pin. Brian. For more brightness your best approach is to use a driver (such as the ULN or even using single
You have to implement column scanning method to implement the scrolling led display. this link will explain the idea of scrolling display technique
Hello guys. My name is Andrew and I'am from Poland. I have plenty of Atmega8A, i have also MAX7219 and 8x8 dot matrix 1088BS > PIN DETAILS I've got also arduino UNO clone and arduino nano clone. I would like to use Atmega8A because i have many of these. I would also prefer to di
Hi, I have designed a 8 digit led scrolling matrix display (8x8 led matrix display). But my led glowing intensity is low. Suggest me some solutions for this.
Need an example code for 8x8 Dot Matrix led display in microC. Basically I was trying to make one. I tried in many ways but it doesn't work. I don't know what was wrong I was doing.... here is my file: const unsigned short letters = { 0x18,0x3C,0x66,0x66,0x7E,0x7E,0x66,0x66, //A 0xFF, 0x00, 0x76, 0x76, 0x76,
Dear All my friends i need to design a 8x8 led matrix ... no problem with the theory or the software ... but how can i control the 8x8 matrix for 220 v output .... i need to control the 220 v for out the row and the col to access one out for a moment .... please advice as soon as possible Best Regards MedTronic
Hi Am woking on 8x8 led matrix with pic16f877a moving message through 8x8 led matrix i need simple code or how to right it using mikroc pro. Thanks
Hello, I am trying to drive an 8x8 RGB Common Cathode led matrix. I am planning to use four 74HC595 shift registers. The problem is that I want to get the maximum brightness out of the leds but I do not know which IC to use between output of shift registers and leds. I am using 5050 smd RGB leds (...)
Hai, everyone. I am searching for the datasheet of 8x8 led dot matrix LD2088BS 60x60mm for a week. I unable to find any datasheet of this model. May share with me how to get this datasheet or send me the links. Thanks alot. :-D
Please help me, need 16x16 led matrix code................
i got it when u connect led matrix led get dim ...becoz led are current operated component ....... when u connect power supply to ur ckt all the current used by controller there is no enough current in ur ckt for drive led matrix ....... there is only two solution u have to use 5A power supply ..... (...)
Hi jean12; As I promised I made and uploaded a project, just as you wished: it uses a PIC16F876A, three 8x8 led matrices, a 4017 (instead of LS138) with ULN2803, and three HC164 (instead of HC595). There are also a Start-Stop switch (see the DSN). Note this is a Proteus-only project, I hope it works also in the reality, try it. But do
this is my clock project using 8051 just change the ic and get an led matrix just changing the IC won't do the job you need to write code for 16f877A
Kumusta! Which uni are you attending? It seems like you need a lot of help. Have you seen what kits are available? I suggest searching the web for something you can copy. Keep it very simple. I am NO expert but I think you need something like this; PC ---------->micro-controller------------->led matrix driver------>led matrix PC to micro-c
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
hi i m working on 8x8 led dotmatrix and i have to make it 10 character display unit i m using 74hc4094, uln2803 , atmega32 controller & want to generate my code in assembly can any one help me and give a sample code or some hint for sending data serially to 4094 ???? thanx in advance
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
I Start working on led matrix Display. Ma first aim is to implement 8x8 led Matrix in C. I read some articles related about matrix. So what will be the all process to implement this. There will scanning rows and columns, display the char so any guidance or tips for S/W implementation. I am going to use PIC18F44J50 Micro controller for (...)