matrix maybe

See if found online that they have envented a extreamly wierd type of computer that works on matrix like codes which is kind of wierd so what else do you think needs matrix type codes for machines

Posted by bommber man 10 years ago  |  last reply 10 years ago

led matrix?

I want to build an led matrix for under 50 bucks that dose not use Arduino. is there any way to do it?

Asked by knexinventer 6 years ago  |  last reply 6 years ago

Led Matrix

I want to make a simple led matrix out of some leds and a 5.6V phone charger, just for it to light up, no animations or any particular control to it, just a simple matrix with an on/off switch.  A link to some instructions? Much appreciated, and is there also some instructions out there to turn a basic light bulb socket to power leds?

Posted by crossraod 8 years ago  |  last reply 8 years ago

POV using LED matrix

Hi, I am doing a project of making and LED analog clock. The clock contains almost 300 LEDss and they are arranged in a specific pattern that looks like and analog clock. My question is how would you create a POV in this design of the clock. I have checked other projects of POV; in those projects the whole device moves along with the row of LEDs and then it created a POV effect. However, in my project, the LEDs are fixed on a plastic sheet. How would I create a POV effect on that??? Please HELP!!!

Posted by Bam Boy 5 years ago  |  last reply 5 years ago

RGB LED Strip matrix?

Can I use connected RGB L.E.D. strips in rows to make a animate-able matrix? And what program do I use to animate it? I'm working on making a deadmau5 mask that lights up, so it has to be a portable unit as I would like to wear it to shows. Thanks :)?

Asked by downhillwondrboy13 6 years ago  |  last reply 5 years ago

Curved/Circular LED Matrix

Hey everyone,  I've been interested in making a new project using an LED display, however, I have no idea how to go about such a matrix without the proper instructions or guidelines since it is very different from a square or rectangular matrix. I was hoping someone could explain how to wire and go about making such a thing (programming advice would also be appreciated). 

Posted by notnowmyheadhurts 6 years ago  |  last reply 6 years ago

24 x 24 LED Matrix Project

I would like to share with you all an awesome project and some doubts and questions related to the same. This is a 24 x 24 LED Matrix project taken from here. All the data is taken from the same link. 24×24 LED dot matrix -->   This is pretty old circuit but I found it interesting to describe here. 24×24 LED display is formed by using 9 8×8 Dot LED matrix displays, that are connected to AT90S2313 MCU. MCU scans an indicator lines in series. Special PC program is written which allows drawing images on screen and transfer them via COM port to device. You can send images in series what gives an animation effect.   Circuit is was built using obsolete AT90S2313 MCU which can be replaced by Attiny2313 MCU with minor modifications of firmware. To make program work you event don’t need to connect device to computer COM port. You can store images in other master MCU EEPROM memory Each received byte from UART is immediately sent to 8 LEDs, second byte to next 8 LEDs and so on. Bytes has to be sent one by one without delay. USART is working at 115200 baud, 8bits, no parity. ---------------------------------------------------------------------------------------------------------------------------------- THE PROBLEMS >1>I really dont know if the circuit is good or not tell me if it is going to work. >2>I cant get 8x8 dot matrix displays so i am going to normal leds to a 24x24 one. >3>I have never worked with bus before (the bold red lines in the circuit) so i dont know how to connect it. >4>The schems are segmented i am finding it hard to figure out how to connect some of the segments. >5>Also i need to know how to hook it up to my pc. >6>I have never done programming so i need to know how to program the ic. THANK YOU I couldnt get the images uploaded nicely so i linked them. 1 2  

Posted by science_freak 8 years ago  |  last reply 8 years ago

Question about LED matrix in general - how odes it work ??? Answered

Hi ... I had a look at this instructable  and there is this picture with the schematic how to create the matrix My question is how does it work, because I can't understand it. I'll give an example : Imagine, you turn on 4 leds : LED1, LED8, LED57, LED64. And my question is, how are you going to turn OFF just ONE LED without affecting other LED's ??? When I'm looking at the schematic and I'm trying to TURN OFF LED 1 ... well if I turn off the ROW1 then I automatically switch off the LED8 as well...or NOT ??? Am I missing something or am I right ??? Thank you

Asked by zholy 8 years ago  |  last reply 8 years ago

Can I convert This project below " 10x8 LED Matrix + Arduino" into " 8 X 8 LED Matrix " what will i need ?

Hi  check please this project i liked it but the problem is my teacher doesn't  want me to work with Arduino . she said try to find like this project " Matrix LED" but by using   parallel port + db25 cable + microprocessor    i want to ask you what Material will i need ?  i have to submit the report tmw :(  help me please :( :) thank you 

Asked by layal_1 6 years ago  |  last reply 6 years ago

Matrix Batch File

Please could some one write me a batch file that says makes the command prompt says Will, The Matrix has you...

Posted by bloodsugarsexmagik 11 years ago  |  last reply 7 years ago

red 8x8 matrix with 26 pins?

I received this matrix in the mail and I'm having problems trying to get it wired, as you can see it's it has 26 pins, the schematic has 8 pins for the rows and 8 pins for the columns but the other 10 are sitting at the bottom with the words "no pin"? I tried to wire up the rows and columns but had no success. My main goal was to have it hooked up to a couple 74HC595 shift registers (via 16 pins?) on some protoboard. Any help on how to get this wired would be appreciated!

Asked by whiskey_14 9 years ago  |  last reply 9 years ago

can we made led dotmatrix diplay up to the knowledge of 3rd B.Tech student and how(clue)?

Myself is a B.Tech student in ECE I'd like to show to my juniors how can use our knowledege till this day in implementing projects if possible products. For I have planed for a led dot matrix display in my campus and that display must cross the knowledge of my juniors standard even if it cost more than as it is in market Because as a first year student I have studied some much only for marks but I want to see those in practicles. no one is guided me. Myself want to be a gudie to my juniors those who have faced problems like me Pease send your valuable suggestions to move further in this thank you

Asked by sita1729 9 years ago  |  last reply 9 years ago

how to detect sensor position with arduino uno

Hi Guys recently i started use arduino UNO and with simple programs to read from analogue pins wasn't hard. now i'm facing a challenge, as i have a sensor mat 16x16 (rows and columns) i want to read 4 rows and 4 columns i'm trying to use the analogue pins as input for rows and digital pins from (8 to 11) as output i want the program to detect the position of the sensing area such as (row1 colum 4, for example) and give me the number that measured over this area. my code is very bad but i'm trying, specially my background wasn't programming or science. any ideas will be great.

Posted by Najeebgh 2 years ago  |  last reply 2 years ago

help code problems i want to pause each word after is scrolls in for about half a sec or so

I believe this is the section of code that needs to be altered? // Plot each character of the message one column at a time, updated the display, shift bitmap left. void AlphabetSoup1() {   char msg[] = "  Enjoy the Vittles  ";   for (int charIndex=0; charIndex < (sizeof(msg)-1); charIndex++)   {     int alphabetIndex = msg[charIndex] - ' ';     if (alphabetIndex < 0) alphabetIndex=0;         //-- Draw one character of the message --     // Each character is only 5 columns wide, but I loop two more times to create 2 pixel space betwen characters     for (int col = 0; col < 6; col++)     {       for (int row = 0; row < 8; row++)       {         // Set the pixel to what the alphabet say for columns 0 thru 4, but always leave columns 5 and 6 blank.         bool isOn = 0;         if (col<5) isOn = bitRead( alphabets[alphabetIndex][col], 7-row ) == 1;         Plot( numCols-1, row, isOn); // We ALWAYS draw on the rightmost column, the shift loop below will scroll it leftward.       }            //-- The more times you repeat this loop, the slower we would scroll --       for (int refreshCount=0; refreshCount < 10; refreshCount++)         RefreshDisplay();       //-- Shift the bitmap one column to left --       for (int row=0; row<8; row++)       {         for (int zone=0; zone < numZones; zone++)         {           // This right shift would show as a left scroll on display because leftmost column is represented by least significant bit of the byte.           bitmap[row][zone] = bitmap[row][zone] >> 1;                     // Roll over lowest bit from the next zone as highest bit of this zone.           if (zone < maxZoneIndex) bitWrite(bitmap[row][zone], 4, bitRead(bitmap[row][zone+1],0));                   }       }     }   } }

Asked by bdexter 6 years ago  |  last reply 6 years ago

How to figure out schematic of 8x8 LED matrix? Answered

I don't have a datasheet for the bicolor LED matrix that I got on eBay. It has 24 (12x12) pins, but no way for me to tell which one is pin 1. Any clues? :)

Asked by bratan 6 years ago  |  last reply 3 years ago

How do they do the 4 coin matrix magic trick?

I have watch a vid showing a soin trick called 4 coin matrix magic trick. ive been wondering how do they do that trick?

Asked by dvaughn 9 years ago  |  last reply 9 years ago

i need to simply run a dot matrix printer motor with a 5v battery?

I ve got a motor of printer with 5v rating and 50 mh  i need to simply run it using 5v dc battery can i do so. it has 5 wires of different colours, please tell me how to do so?

Asked by 9 years ago  |  last reply 9 years ago

Best instructable to make LED MATRIX Scrolling.?

In example 24*6 or anything that size.

Asked by Hman2121 8 years ago  |  last reply 8 years ago

Need help! i am doing 24CX16R dot matrix using PIC16F877A with 74LS595?

Asked by bhas_r 7 years ago  |  last reply 7 years ago

5x7 dot matrix display

Hi, I have a lot of dot matrix display 5x7 model LTP-2157AE i want use it but i don't know how do it, the product is this: Can youhelp me??

Posted by PDF laboratory 2 years ago  |  last reply 2 years ago

Nokia 8110

How could I make my Nokia 8110 spring-loaded like the phone in The Matrix?

Posted by Mr.Vengeance 11 years ago  |  last reply 8 years ago

Ghosting in LED matrix 8x8 RED

Hello All I have problem that is Ghosting in LED matrix 8x8 RED, I try solve by software and change littel to best but not fully, where on lighting that ghosting is not show but in darkness room it is show perfect. I use PIC16F877A and 74HC595 for rows and CD4017 for columns. Best Regards hosam matar

Asked by hosammatar 2 years ago  |  last reply 2 years ago

Arduino LED matrix - Help needed

Hello fellows! I´m doing led matrix. I managed to put this thing together: But i have one problem ... I cannot open the instuctable anymore(ERROR 500: javax.servlet.jsp.JspException: ServletException in '/common/newlayout.jspx': Can't insert page '/pages/explore/type/instructable_body.jsp' : ISO-8859-10).  I need the progams for the arduino. Can somebody e-mail me those programs from the page?   Thanks!

Posted by ikkajh 8 years ago  |  last reply 8 years ago

74HC574 VS 74HC595

Can anyone help me understand when you would use one over the other? I am reading the spec sheets and I am not understanding the difference. I am gathering parts for two different projects. One is making an 8X8X8 LED Cube and the other is making a plaque using 8X8 matrix cubes. The plaque will have 11each of 8x8 matrix cubes red and 4each of 8x8 matrix cubes that are RGB. Thank you in advance for your help.

Asked by reckerd 4 years ago  |  last reply 4 years ago

Transistors in LED matrices?

I'm confused about the purpose served by using transistors in an LED matrix.  Why not simply use current limiting resistors and a shift register?  What purpose do the transistors serve?

Asked by KentaGrace 8 years ago  |  last reply 7 years ago

LED Matrix?

I tried making a LED Matrix but encountered a problem while writing the code. I thought that I would be able to light them up by applying power to rows and columns but found out that we can only light up a few LEDs at a time due to the current limit of Arduino. I now have no idea as to how I'd write the code, so I would appreciate it if someone could help me. My matrix is 5x5. I attached a picture describing how my LED's are connected. I have so far not connected the resistors and I was wondering if I could connect them on the cathodes rather than anode. So, I would like it if anyone could help me regarding the resistors and the code. Thanks.

Asked by SA-DIY 1 year ago  |  last reply 1 year ago

Arduino LED matrix for text and a audio spectrum?

Still running off my daft punk helmets, I had the idea of installing the ability to give the 8x40 LED matrix that will be installed into one of them the ability to be a real-time audio spectrum. Doing that on its own is something I can stumble through and get working, but my issue came in with the fact I also want to be able to change it to be able to display text. I'm thinking I can "change modes" between using some sort of EQ shield/setup to run the matrix verses pulling info for text, but this is one of the dark areas for me that I need a little bit of help on. Basically: I need to know if I could set up a switch to swap between EQ and text.  EDIT: I've already answered my question! However, this lead to a second question. If I use this code, how hard would it be to edit it to either duplicate or stretch it out over an 8x40 LED matrix verses the 8x8 its on? Thanks! 

Asked by DoctorWoo 4 years ago

LED Matrix Logo

Hello, I am looking for help/advice with small project I am undertaking. I want to make a logo out of 50/60 single LED's as a gift to someone. I have attached a picture of the logo. Should I make it on a blank circuit board, what is the best way to connect the LED's (2.2V) and solder them, how many resistors are needed? Any information is gladly appreciated :)

Posted by EimearF 2 years ago  |  last reply 2 years ago

How can I make my homemade 3x3 matrix show numbers like 2, 3, and 5 like the are shown on a dice?

I made a 3x3 matrix with my arduino, with transistors on the collums and the rows hooked up with wire, going to the output. I have a arduino, with 6 PWN outputs, luckily, and 14 total digital pins, and also 6 analog pins. So I need help having a 2 show up on my display, because it looks like a 4. and this is shown like it is on a standard dice. Soo... what am I doing wrong? I am just turning the collums and rows on and off to show lights and stuff. So ... help!

Asked by chrisapalo 9 years ago  |  last reply 8 years ago

Cute musical time-waster.

I just "stumbled" on this sweet little tool for composing and playing musical loops. Pitch is on the vertical axis, time across the horizontal. I don't have any way to record it - if you copy this pattern, it sounds like a thumb piano.

Posted by Kiteman 7 years ago  |  last reply 7 years ago


The robots have gone back in time and taken over the funk! FULL DISCLOSURE: I listened to a ton of James Brown during my senior year in college and seeing a sci-fi/JB mashup is amazing to me. I also re-fell in love with "Appetite for Destruction" the same year. It was a good time.

Posted by fungus amungus 11 years ago  |  last reply 10 years ago


Hi, I want to make a scanner, or maybe a "modeler". Background info keywords:   <- NOTE THIS PROJECT IS WAY WAY MORE ADVANCED, I WANT A HIGHLY SIMPLIFIED VERSION OF THIS.;=18c044d58272f31902c0c6194ba64eba   <- PICTURE OR JUST GOOGLE IMAGES:  PIN SCREEN Pin-screen. I want to make something that detects where each position is on a Z-axis (their x and y coordinates are fixed). So just a third number per-pin would allow me to map out the entire layout of the pins. I am not too sure if this has been done before or not. If anyone knows of a product that does this I would really appreciate more info. Anyways, THE ARDUINO PROJECT: - Something that takes feedback from each pin and maps it out in the computer. THE QUESTIONS: - How to read the feedback? (what sensor can I use, note that there will be hundreds of these sensors, so they have to be preferably small. Are there some very small linear position detectors? is an optical detector better? (I WOULD PREFER IT TO BE STURDY, i wanna play with it). Im thinking it should be something similar to how TVs work, with a pixel-matrix but instead this would be a matrix of position feedback, and I think it would be simpler than a TV since each channel only gives out 1 feedback (Z-position) instead of an RGB code (3 codes per pixel).  Anyone have some ideas on how to develop this project. Thank you!

Posted by david606 4 years ago  |  last reply 4 years ago

code vision programming in dot matrix...... a-z alphabet

Help me in the programming of dot matrix in code vision avr

Posted by ramsha shakir 4 years ago  |  last reply 4 years ago

Is there a way of connecting a pot or buttons to control the led lol matrix display?

I would like to control the matrix shield with buttons and/or a potentiometer if that is possible thanks.

Asked by kwynne 3 years ago  |  last reply 3 years ago

LED matrix array sink and source? Answered

Looking at  matth3w instructable , as a rough guide line for hardware setup, He is just sourcing the rows with MIC2981 driver but has nothing to sink the current except the arduino. Should I also use something to sink the current like a ULN2803 or HEF4794 to protect the arduino if all the LEDs in a column are on?

Asked by belliedroot 8 years ago  |  last reply 8 years ago

In an arduino controlled led matrix, can you control the brightness of leds?

I'm looking at making a matrix leds that pulse and glitter randomly but can also scroll message or display shapes when needed.  Can you control the brightness of individual leds during a matrix scan?

Asked by fetchtables 8 years ago  |  last reply 8 years ago

how can i make an led matrix on stripboard? Answered

How can i make an led matrix on stripboard, i do not have acess to pcb manufacturing so i want to make an led matrix on stripboard!!! does any one know how to do this easily? please answer!!! thanks!!!!

Asked by thecookiemonster 9 years ago  |  last reply 9 years ago

how can i control an 8x8 led matrix with an arduino and a computer ps/2 keyboard? Answered

I have an 8x8 led matrix and would like to know how to control it with a ps2 computer keyboard and an arduino. please note that i have no programming experience.

Asked by devicemodder 9 years ago  |  last reply 9 years ago

How do I determine the scan matrix of my piano keyboard?

Hi, I am trying to convert my old shitty keyboard into a midi controller by following the instructable by Evan Kale; but when connecting two wires of the ribbon to my multimeter, which is set to continuity mode (as seen at 1:30 of the video in link above), there is no response from the multimeter when pressing the keys in order to determine the scan matrix. Am I doing something wrong? Please help!!!

Asked by hbade 3 years ago  |  last reply 3 years ago

Does anyone know how to make a matrix code on paper? Answered

I want to draw my own matrix codes and be able to solve them

Asked by Rebreg 6 years ago  |  last reply 6 years ago

RGB Led Matrix

Sorry! I am looking on how to make a RGB Led matrix. I have found a lot of them but any of them was a RGB, so the idea is this I need to make a 6x9 RGB Led matrix and make the dots flash in different colors. I know the principle of the led matrix but not of a RGB one. So can you lend me a hand? or a sketch as possible? Thanks for reading. P.S.: Sorry for the bad english I speak spanish lol

Posted by Positive07 7 years ago  |  last reply 7 years ago


Https:// I have successfully made a 24 * 9 led matrix following the instructions on above link, which when I use with an arduino from a serial monitor I am able to display a scrolling text. However l want when one types a text and or numbers -maximum seven, they should be displayed permanently or stationary except of course if one decides to change the text and send again from the serial monitor. Kindly can someone send a full code for the task. I suppose you will change and update the code from the above link. My email address is :

Posted by NJORO1975 1 year ago  |  last reply 1 year ago

Need help trying to get the Arduino working with the RGB Matrix (with backpack) and an EEPROM chip.

Hi everyone, first question on instructables! I have an Arduino Deumilanove, a Sparkfun RGB Matrix with backpack, and an EEPROM chip (24LC256). I have the Arduino all hooked up to the matrix and have been able to mess around with some basic images and colors, but I have a lot of questions. So far, to display letters I have been setting up sections of code that light up each LED separately. I know there has to be a more efficient way to do this and was wondering how? Also, I have an EEPROM chip that is setup with the Arduino and Matrix but can't figure out how to use it. I have looked at the code for it on the Arduino website and I can't really figure out how it all works. So basically, here's what I want to be able to do: - Store the alphabet in the EEPROM - Be able to recall letters from the EEPROM - Display marquee messages Thanks in advance!

Asked by xlivewire7x 9 years ago  |  last reply 9 years ago

LED Scrolling Marquee

I am looking for help setting up an LED scrolling Marquee. It has 8 rows and 96 columns. all leds are one color. The only microcontroller I have available is the 8051. any ideas would be great

Posted by Yanks8480 7 years ago  |  last reply 7 years ago

Rainbowduino to control multiple LED Matrices?

Hi, I am planning to make a large display using the rainbowduino with multiple led matrices. I am wondering if I can control multiple led grids using the same rainbowduino or if i need to buy multiple rainbowdionos. all components arehanks from seeed studio. Thanks!

Asked by Nicapizza 5 years ago  |  last reply 5 years ago

Large LED WALL (Updated Name needed)

Hello, Im not even sure if this is the right place for this post. I wanna build a LARGE LED WALL. Basically rows and columns of leds which i can progam to do what i want, be it scrolling lines, words, snowflakes etc. Perhaps even colour changing LED's to produce a large picture. Can this be done?  (either one colour or multicolour) Where do i start if yes! Any ideas welcomed

Posted by dirty-monkee 8 years ago  |  last reply 8 years ago

Got a problem with the Arduino shift out function and a LED array

After looking at this instructable, I wanted to start building my own LED array. I found this Arduino article. I bought the 74HC595N chips and connected everything exactly as the article showed it, and copied the first example program directly into the Arduino. The Arduino is connected through the USB cable to my computer for power. My problem comes in when I hook the circuit into the 5V on the Arduino. When I hook it up the Arduino shuts itself off. I wasn't sure if it was overloading the Arduino, so I hooked it up to an old, plug in breadboard I have which has a limit of 1.5A. When I hooked up the circuit the breadboard produced a high pitch tone and still nothing happened. I have checked and rechecked all the connections and jumpers, (even looked at the data sheet for the part) everything seems to check out. The LED's are just simple green LED's, but the resistors I am using are 1k instead of the 220 ohms the article said to use (i had only 1k handy and the LED's still light with a 1k).

Asked by Mitnick22 8 years ago  |  last reply 8 years ago

LED matrix?

I'm interested in making an led matrix with random effects.  I have no programming experience, so if theres a simple way to do this with a 555 timer or something of that sort please send me a link to a site or give me details. thanks. Thanks for the help everyone. I'm looking into programming microcontrollers. I guess it would be cheaper and easier than using a bunch of 555 timers

Asked by musick_08 7 years ago  |  last reply 7 years ago

they use matrix to send the volt to led it can affect the other leds in the matrix led projects?

I am see the matrix led project in this project .. we use row and column .. one row can affect to another column on that display..... why it will be not affected in this project

Asked by electronicsprojects2010 8 years ago  |  last reply 8 years ago

Help with LED matrix (daft punk) table Answered

Ok, so im still relatively new to electronics so please bare with me.  But say i were to make this table with an 8x8 matrix, as far as the wiring is concerned, is it really as simple as making the matrix and programming it with an arduino? 

Asked by texpert 6 years ago  |  last reply 6 years ago