64x8 Matrix

[Boshimanu]

Hi, is it possible to create a 64×8 matrix? It’s essentially double the size of the original version. On the Q-ROM, there was a 64×8 version.
It was called the wide version: marquee.ino.d1_mini_wide_3.03.bin

Thank you.

[Boshimanu]

I solved it by searching by logic inside the project, and I came up with this:

In DynamicParams.h -> line 25

    #define MAX_DISPLAY_NAME_LEN      16 // *From 8 to 16*

In Settings.h -> line 64

    int displayWidth = 8; // number of display tiles; default 4 for standard 4 x 1 display module; Max size of 32 tiles. // *From 4 to 8*

In LEDmatrixClock.cpp -> line 441-442

 Uncomment the line to perform a reset. After completing the reset, comment out the line again and upload the firmware.

And it works as intended. 👌

Thank you again for the great work. 👍🙏

[rob040]

Actually, the Qrome wide version was (just) 8 tiles wide.
Its size was not web configurable, while my version is, hence no separate binary is needed.
At that time, the MAX72xx library was limited to 31 tiles (<255 pixels).
That library was fixed in my repo, but was never tested beyond 32 tiles.

One weak point of the ESP8266 is its RAM memory size; It is to be investigated what the display size increase would do to its (free-) memory and its dynamic memory allocation pool.
If you have tested at 64 tiles thoroughly, and all is well, I probably could increase the max size in the web config.

BTW. Note that a 64-tile display would be more than 2 meters wide; yours will probably be a unique piece.
Could you share a Photo of your build?