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Topic: LED matrix display - MD_Parola, MD_MAX72xx and MD_MAXPanel (Read 456536 times) previous topic - next topic

marco_c

#1290
May 02, 2018, 02:45 am Last Edit: May 02, 2018, 11:20 am by marco_c
Quote
when i try to send the code it says "timed out rcv"
What says this message?

You have 2 problems:
1. Your display is not set up to show double height, that is why you get single height. The standard demo for BT is not double height.

2. It does not seem that you BT connections are correct somehow. Make sure that you BT works without Parola (use some simple serial terminal 'echo' type code to view what is being sent. IF you can see it in the serial monitor, then the connections are not being made correctly. That is not a Parola problem.
Arduino Libraries https://github.com/MajicDesigns?tab=Repositories
Parola for Arduino https://github.com/MajicDesigns/Parola
Arduino++ blog https://arduinoplusplus.wordpress.com

Decired

What says this message?

You have 2 problems:
1. Your display is not set up to show double height, that is why you get single height. The standard demo for BT is not double height.

2. It does not seem that you BT connections are correct somehow. Make sure that you BT works without Parola (use some simple serial terminal 'echo' type code to view what is being sent. IF you can see it in the serial monitor, then the connections are not being made correctly. That is not a PArola problem.
I found the problem, wires wasnt soo good. For 1 display its working perfectly, is there an example for 2 height (bluetooth) module? I checked your github, but its the same as the example.
Thank you.

marco_c

No, you will need to do some work yourself.
Arduino Libraries https://github.com/MajicDesigns?tab=Repositories
Parola for Arduino https://github.com/MajicDesigns/Parola
Arduino++ blog https://arduinoplusplus.wordpress.com

Decired

No, you will need to do some work yourself.
Gotta try then.
Thanks again.

Asifudin

#1294
May 13, 2018, 05:23 am Last Edit: May 13, 2018, 05:26 am by Asifudin
Good morning from indonesia, i want to try this Library.

but, i found error like this

Quote
http://www.imagebam.com/image/647b60859383534
Quote
http://www.imagebam.com/image/76be5b859383684
i use daftpunk Code, and used 8X8 dot matrix 8 pcs. How to solved it? thankss beforee

marco_c

Please read the documentation in the MD_MAX72xx library on how to change the header file for your hardware type.
Arduino Libraries https://github.com/MajicDesigns?tab=Repositories
Parola for Arduino https://github.com/MajicDesigns/Parola
Arduino++ blog https://arduinoplusplus.wordpress.com

Asifudin

Please read the documentation in the MD_MAX72xx library on how to change the header file for your hardware type.
can u give that Link for me? thanksss u so much

Decired

Hi.

I have a question about effects.
If i understanded correctly they are stored in MD_Parola.h ?  And i can just call them?
Thanks.

marco_c

@Asidfudin: the documentation is in the docs folder of the MD_MAX72xx library.

@Decired: I do not understand the question please explain what you are trying to do. The purpose of the Parola library is text effects, so they are not 'stored' there but the purpose of the code is to create the effects.
Arduino Libraries https://github.com/MajicDesigns?tab=Repositories
Parola for Arduino https://github.com/MajicDesigns/Parola
Arduino++ blog https://arduinoplusplus.wordpress.com

Decired

@Decired: I do not understand the question please explain what you are trying to do. The purpose of the Parola library is text effects, so they are not 'stored' there but the purpose of the code is to create the effects.
I got my answers, Thanks.

Decired

#1300
May 15, 2018, 11:01 am Last Edit: May 15, 2018, 11:02 am by Decired
Hi

I have a question about your bluetooth sketch

Is it possible to create 3 different justification buttons? Right now you have one button for left,right and middle.

I tried to do it, but i dont understand why its not working. ( my knowledge is way to small)

Its only working for left side.




And i added case with the same name.
Any tips where i am going wrong? i think its have to do something with the textPosition_t

Thanks.

Asifudin

Hi

I have a question about your bluetooth sketch

Is it possible to create 3 different justification buttons? Right now you have one button for left,right and middle.

I tried to do it, but i dont understand why its not working. ( my knowledge is way to small)

Its only working for left side.




And i added case with the same name.
Any tips where i am going wrong? i think its have to do something with the textPosition_t

Thanks.
hi dude, can i  ask for the code you use, i want to try using my bluettooth module HC-05. thnkss



Decired

hi dude, can i  ask for the code you use, i want to try using my bluettooth module HC-05. thnkss



From md parola examples, bluetooth control
this one

marco_c

#1303
May 16, 2018, 12:58 am Last Edit: May 16, 2018, 12:59 am by marco_c
@Decired: The current code will only send a message from the AI2 code to the Arduino code to toggle between the different modes (justify L, C, R).

To modify the whole (end to end) command structure you will need to do:
  • Define 3 additional parameters for the justify command that will be for L C R
  • Add in 3 buttons and associated actions on the AI2 interface to send a message for L, C R justify
  • On the Arduino side, receive these commands and then simply set the L C R command directly
My feeling is that you are learning, which is good, but that you are being very ambitious with your current level of understanding. My advice to you is that before you change any code you should make sure that you understand the end to end data flow that causes things to happen. This will take a lot of effort but you will learn much more than by just stabbing at things and then asking for help.
Arduino Libraries https://github.com/MajicDesigns?tab=Repositories
Parola for Arduino https://github.com/MajicDesigns/Parola
Arduino++ blog https://arduinoplusplus.wordpress.com

arjious

Dear marco,

hopeyou are well. recently i make a matrix display for moving text via bluetooth. i am using here double height with bluetooth. all are well when total 16 matrix connected. but when i increase it to 24matrix it face somr problem when i power on as attaced file. after performing on and off several time sometime it work well as attached file. if i restart again same problem arise. can you help me regarding these?

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