How to use MAX7219 Dot LED matrix with Arduino - Tutorial

[@jmscnny]

Sweet. Simple when you know how. Thank you. I was expecting the need to assume my head scratching pose.

[@BasselIssa]

hi, what if we removed the 8x8 display from the max7219 driver board. can the board then be used to drive 8 digits of 7 segments display?

[@dillonwest9732]

What can I do to use two matrices, but have the same image on each. I used the same bitmap 'image' for each matrix, but they have a delay between each as they switch images. Is there any way to have both give the same image without he delay between the two?

[@rushabgaude7332]

Can we connect it horizontal and vertical ?

[@norazreenasri8265]

hye. is there any chance u run a project using led dot matrix as similar as the interactive table ?

[@4lby10]

Hi, I'm getting an error with your code. It is saying with "LedControl.h" "No such directory or file" I'm using an Arduino Uno if it helps. Please help me

[@patprop74]

Do you know if the max7219 would be a good ic for 8x8x8 Common cathode cube ? 8x max7219 on for each layer ?

[@dillonwest9732]

Would it be possible to run two 8x8 LED matrices off one max7219 chip, I would like them to display the same image, but am trying to save space. Thanks!!

[@LumbreraEnMiCamino]

hey my friend i need your help, i do exactly all you did, but in my matrix all the leds start ON and i can't turn them OFF. please help!

[@BrainybitsCanada]

+Michelle Perez Morales Hard to say, but check all connections to make sure the module connections are all good and making contact. Thanks for watching!

[@Justin-hm4xu]

how do you add more frames

[@samj1012]

Thanks Ivan. great project & tutorial easy to understand. Can you please give some tips on making a digital clock with these modules ? a clock that every 10 seconds, the numbers scramble, collapse, shatter. or rainfall to form the new time reading. I saw it on a gadget shop but was pricey..trying to DIY if you can help.

[@BrainybitsCanada]

+Sam Jas Check out this library: parola.codeplex.com/ seems to do a lot of things using these MAX7219 modules, haven't played with it myself but will probably make a video soon using it. Hope it helps! Thanks for watching!

[@samj1012]

+Brainy-Bits Thanks alot.

[@shangss]

hi there! i'm using an atmega128 microcontroller, are the last 3 pins (digital in, clock etc) available on the atmega128?

[@BrainybitsCanada]

+Sunny The 328 has twice the memory other than that they are the same so it should work! Btw I think you meant 168 not 128 :) Thanks for watching!

[@doorible]

What if you only wanted to do one?

[@moisescastro1740]

can not put a bluetooth module in this project? because the entrance 5v is already occupied

[@moisescastro1740]

Or yes?

[@danielavalerin1509]

How many MAX7219 you can put toguether?? Thanks for the video

[@BrainybitsCanada]

It's been a while since this video, but I believe the max number you can link together is 8x. Thanks for watching btw :)

[@danielavalerin1509]

Thanks, I was trying with 10 and it was working but whe i put another one, It doesnt work... (sorry for my english)

[@BrainybitsCanada]

Thanks for the update... I guess 10 is probably the max and not 8 like I supposed :)

[@lucasteubing]

Hi, can you please send me the code for 4 display? I don't know how to write the code. Thanks

[@mikaelkarlsson9945]

Covering the leds with red tape or some kind of cover (preferably not black) will make them show up more clear on camera.. Otherwise, nice presented.. Regards!

[@BrainybitsCanada]

Thanks for the led camera trick I'll keep that in mind next time I do a video that uses leds. Thanks for watching btw!

[@TheMechanicGamerVids]

It keeps saying that void invaderla is a different kind of symbol wtf?

[@patricknelson]

The MGV - invaderla or invader1a (number 1 vs lowercase L).

[@leorocket]

PLEASE share and show the fritzing !!! and the .fzz

[@BrainybitsCanada]

+Leo Etcheverry We use fritzing but the parts we make a not real Fritzing parts they are just images created in Illustrator or Photoshop, so would not be of much help since they are pictures and not real fritzing. Thanks for watching!

[@lopyus]

Thanks, can you make a tutorial for controlling and building a dual color (maybe tri because two leds can light up at the same time) matrix display? Thanks, it would help me a lot. :3

[@BrainybitsCanada]

Hi, thanks for watching! Not sure what you mean by dual or tri color? Can you give me an example?

[@lopyus]

I am sorry, I meant you have a matrix in which you have two different coloured leds like red and green. So you can have red and green colours in your matrix. You can also make yellow, if you light both of them at the same time.

[@lopyus]

I've got it figured out. Thanks anyway. :)

[@BrainybitsCanada]

Ashish Barnawal I'm happy you figured it out... I know now what Matrix you are talking about, unfortunately I don't have any on hand, so I might not have been of much help in this case! :)

[@lopyus]

Brainy-Bits Still great tutorial, helped me a lot. :)

[@BrainybitsCanada]

Hi Antonio, thanks for your comment. If you go to our tutorial page on our website at brainy-bits.com/tutorials/how-to-control-max7219-led-matrix/ at the end you'll find a download link for the "Ledcontrol.zip" library that we used. Inside there's an Arduino example called LCDemoMatrix that scrolls the word "ARDUINO". I'll make a follow up tutorial video next week explaining how it works, so stay tuned...

[@choppergirl]

Is there any way to program the Arduino in compiled Python, and not C? I don't want to touch C with a ten foot pole. C is some rancid low level garbage... its only one step up from programming in assembly...

[@ianturner2229]

You must be joking, C is the BEST programming language around, and it certainly is not low level, it is way removed from assembler. Bite the bullet and learn a REAL programming language, it really ain't that difficult if you can program successfully in almost any other programming language

[@choppergirl]

Case in point: Handles... a pointer to a pointer... wtf is that mind bending garbage. Unnecessary semicolons... as chartfunk... everywhere. Obscure looking indecipherable code. No garbage collection. Buffer overruns leading to exploits.

[@ianturner2229]

What is hard about a HANDLE, it's just an INT, buffers are up to you to program correctly. Indirection (pointers to you) is a very powerful tool when used correctly, and if code is indented correctly,it is perfectly readable. It also trains you to be structured in your thinking and coding, which leads to better products.

[@choppergirl]

+Ian Turner How about a variable that actually contains the data it is suppose to contain, no a variable that points to another variable that just points to where the actual data is somewhere in memory. What kind of fucked up mess is that. No, C needs to go the way of Cobol and Forth and Lisp, it's over stayed it's welcome...

[@ianturner2229]

Pointers allow you to manipulate data very processor efficiently for a start, but of course, if you can't handle it........... Take the baby route instead :-)

[@vitorsinventions]

Im having a lot of trouble man ....something is wrong

[@Dancopymus]

Hello friends "Brainy-Bits"! I am already subcribed to you channel. It is possible, for goodness and kindness, make a tutorial similar to this but, say, 1. make a scrolling text, 2. show time, 3. show the temperature and go repeating? Or... 1. make a scrolling text, 2. a flashing image, and go repeating? I will be very grateful

[@BrainybitsCanada]

+Daniel Fernandes We will be making a new video using a different library very soon and will keep your suggestion in mind :) thanks for watching btw!

[@robbyhoff6653]

pls code...

[@leorocket]

Love !

[@BrainybitsCanada]

+Leo Etcheverry Thanks for watching!

[@BrainybitsCanada]

Posted a new tutorial on how to make scrolling text on these. You can check it out here : kzbin.info/www/bejne/fKCrhmmGp7-Wesk

[@im_cart8656]

subbed