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Topic: MD_MAX72XX Text Scrolling Issue (Read 499 times) previous topic - next topic

mojacko

Hi guys,  I'm trying to display scrolling text on an 8x8 LED Matrix using the MD_MAX72xx library.  I've used the MD_MAX72xx_HW_Mapper and I have set these flags as recommended:

In MD_MAX72xx.h:
---------------------

#define   USE_OTHER_HW   1


In MD_MAX72xx_lib.h:
--------------------------

#define   HW_DIG_ROWS   0
#define   HW_REV_COLS   0
#define   HW_REV_ROWS   1

DIN pin at the bottom

When I tried running MD_MAX72xx_Test.ino,  all tests look good on the orientation except for scrolling text and the transform examples   Scrolling text seems to get stuck on the first column like it does not "shift left"

However, if I used:

#define   HW_DIG_ROWS   0
#define   HW_REV_COLS   1
#define   HW_REV_ROWS   0

DIN pin at the top, meaning I rotate my modules 180 degrees, everything seems fine.  I'm posting this cause it might be a bug not yet addressed

 

marco_c

#1
Feb 19, 2018, 06:11 am Last Edit: Feb 19, 2018, 06:13 am by marco_c
Post a photo or link to the shop for your LED matrix. Your would be the first one in a long time that is 'OTHER_HW' so it is probable that you have made a mistake somewhere.

Also, confirm that you are running the latest copy of the library from the distribution web site.
Arduino Libraries https://github.com/MajicDesigns?tab=Repositories
Parola for Arduino https://github.com/MajicDesigns/Parola
Arduino++ blog https://arduinoplusplus.wordpress.com

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