MD Parola library for the Max7219 & Arduino
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- เผยแพร่เมื่อ 3 ก.ค. 2024
- MD Parola Library
We've done a couple of videos in the last month with 8x8x4 LED modules driven by the MAX7219 chip.
LED Matrix Essentials with the MD MAX72XX library
• LED Matrix Essentials ...
LED Matrix Clock
• Arduino LED Matrix Clock
To communicate with the modules, we have been using the MD_MAX72XX library written by Marco Colli. Well last week Marco contacted learnelectronics to let us know we not only using an old version of his library, but linking to one he has asked to be removed.
Marco gave us the link to the updated library: github.com/MajicDesigns, and also told us about the MD_Parola library that works with the MD_Max72XX library.
So in this video we take a good look at the MD_Parola library and discover just how simple it is to use. So if you are looking to do any projects with the 8x8 LED modules, learnelectronics highly recommends using these two libraries.
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Please watch: "Diodes: The basic building block of all digital circuits"
• Diodes: The basic buil...
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NOTE: As noted in other videos that mention modifying the MAX72xx.h file for the different MAX72 modules, it should be noted that you no longer need to make the modification in the Parola/MAX72xx Library as noted. In the updated EXAMPLES there is now a line that reads:
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
And you can change the "PAROLA_HW" to the type of board/matrix you are using.
For example I use the FC-16 boards so I changed the define to:
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
You can find the enum moduleType_t definition in the MD_MAX72xx.h file at around line # 265 to define which module you are using.
Thank you! That solved my problem.Easy Peasy
Thanks for setting the record straight!
No problem. Thanks for reaching out.
I realize I am kinda randomly asking but does anyone know of a good place to stream newly released series online ?
@Ray Ibrahim i watch on Flixzone. Just google for it =)
@Oliver Trent definitely, been using flixzone for months myself :)
@Oliver Trent thank you, signed up and it seems like a nice service =) Appreciate it !!
Thank you for the vijeo and the ave reference
""Gracias...nice work.
very nice library
Whereas I appreciate the work Marco has put into these libraries. He could have provided a bit more info on how to use them. The functions you demonstrated were the very simple ones, but you skirted quickly over the other more complicated bits. They aren't simple to use. It would be nice to see in a bit more detail the complex functions, (scrolling in all directions and creating characters) without having to refer to the source code and working it out.
Thanks for the video. I built a matrix from individual leds (44 columns by 7 rows) using 74HC595 shift registers for the rows and the columns. I would really love to use some of the animations that you have shown here for my sign. Do you think the Porola library could be adapted to work with the project that I built?
I had a problem finding the .h file to edit. I added to the library from the zipped file I downloaded from github. When the library was added, the files were unzipped and stored with other libraries I added. Mine was under my user name\AppData\localArduino15libraries. After that, it worked well. Thanks for the video.
Could you tell me how can i change font size,style?.can we give images?
Can this library be used for project where each led in max7219 module lights up depending on encorder rotation?
I noticed that float and double type variables don't work on the p.print. Int works though, what if I wanted to make a temperature sensor? It needs to have the numbers after the decimal to show accuracy. I do not want to round them and convert to int. What if I also want them scrolling from right to left? The output should be like this:
Temp: 32 "C
And it should be scrolling leftwards.
Hello sir,It dose not compile on my system,what must I do
I built the 8×32 by myself with max7219 but it works on Arduino,but when I want to compile parola it doesn't work
ola amigo qual versao da IDE vc usa para esse codigo, ? quando eu compilo da erro, !! estou com a versao 1.6.8 obrigado
This is a great example. How would you connect 3 or more of these modules?
You just connect them end to end and change the number of modules in the code.
Thanks! Ya gotta ditch that camera light though.
Sir, i want to ask when we connect this led matrix to arduino and then we connect them both with PC to upload program, does the matrix LED turns on automatically or not. In my case, when I'm connecting both the module with PC, some part of the LED turns on and some are off. This is my first project and i have very basic knowledge about electronic and nil about coding.
how to conect bluetooth?
I do not what is wrong when I download MD Parola from Github do not compile whit Arduino IDE made a error
Please can you held to me thanks so much Eddy from WPB
There is ant way to adjust the brightness of the led matrix in md parola software?
+Ioan Pelea Yes, github.com/MajicDesigns/MD_Parola
How to make scrolling text that can be set in code and not serial port and change it in void loop
I have just one LED 8x8 matrix MAX7219. I tried the parameter MAX_DEVICES to 1, but it is not working. I also tried with 0, thinking that it counts from 0, but not success. Following the code, of Parola_print_test, I attached a little code to turn on and turn off some of the leds of the matrix, and it seems that it only runs that part of the entire code, not Parola code.
You need change "PAROLA_HW" to "FC16_HW
Will this work on the Nvidia Jetson?
hi friend, i saw you video and i like that matrix, i brought led matrix but dont work like you, the text show it reverse ¿do you have idea to configuring it? thanks.
I have open MD_Max72xx.h file,But i'm failure to find this line "" USE_PAROLA_HW " Or this line "USE_FC16_HW" Rather I find "USE_LOCAL_FONT is set to 1 "Can you teach me how to do it ?
hello evrey bady i have problime whit the word in the matric it writ whit worng order some one help me
Sir could you please tell me how could I contact Marco colli...Iam getting a problem with my 4 8*8 led matrix text scrolling ,my srolling text are limited to 1 frame ony
+Abhijit kashyap github.com/MajicDesigns
Sir I am getting a problem with my 8 module 8*8 led matrix text scrolling display .. my scrolling is inverted and started left side .. and display individual module ..pls help me ...
tapasbdg2007@gmail.com
whatsap -8391021289
Hi, I am having trouble getting my max 7219 to work properly..
Any chance you can reach out to me?
Hey! Could you provide a link to the code? Thanks.
Still having same jumble word prob
I had a similar problem (with the older library) until I set the HARDWARE_TYPE to FC16_HW
ie:
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
second link is wrong, points to an EDIT version...
thanks, should be fixed now
where is the code?
hi
is there any way of getting the code for the scrolling text program ?
It's just an example from the MDParola library.
program showing mirror image I tried this code
max 7219 I used 8*8 matrix
Sumit Tehalwani you may need to adjust the board type in .h header file. while all the boards look the same, the wiring is different.
more help please im getting upside down, and back to front.
Try setting HARDWARE_TYPE to FC16_HW
Like this:
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW