Weird Matrix Behavior

[Juls-Hg]

Weird Matrix Behavior

[TomMakesThings]

You're right that I forgot to include the Bluetooth wiring, thanks for pointing that out. As for the custom pattern sometimes skipping rows, I have observed this too occasionally. I suspect it is an overflow problem where the bluetooth receiver is not able to pick up all of the signal sent to it and the board runs out of memory, e.g. if it is also picking up background signals or sent too many requests in a short period of time. This is something I was meant to look at and never got round to it, so apologies for that! Though it may be possible to increase the receiver buffer size in the code uploaded to the board.

[TomMakesThings]

Hi, I'm glad you like it and are giving it a go! It's been a while since I made this project and unfortunately do not have the parts with me to test anything out myself. It could be that the board is not getting enough power to light up both matrices at once. I'd recommend testing it plugged in to a computer and with different / fresh batteries to see if this makes a difference. If you're still are having issues, I'd try find a tutorial with some simple pre-written code that lights up chained matrices and see if it works then to rule out issues with chaining.

[Juls-Hg]

nah don't worry. it's been more of an oddity i found by accident. gotta try every feature to know how and if it works yk ^^
that one isn't critical to me. overall working is my need ^^'

the behavior is the same on a new-ish battery and via usb. i flipped modules, ICs, cables, tried other matrixes. it may be the PCBs/SMDs but i believe that to be unrelistic. by now i even tried to compile and upload with the old IDE (v1.8.19 instead of v2.3.2) to rule out any compiling issue.
Sidenote: I plugged it together with a different matrix (red) now and it worked. i then tested all of my matrixes i have (4 white, 2 red) and after cycling them it didn't work again with the one it worked before. mentioning i have no clue what is going on is an understatement x'D

but thanks already for the quick reply <3

edit: i tried these examples and they did not work. just lightend up the uppest line and weirdly flashing the white matrixes. the reds just light up the line

[TomMakesThings]

Oh that's strange. What you've described sounds like a hardware issue over a problem with the code. Though with the example you've given, did you change the variables at the top to match the matrix pins? e.g. const int DIN_PIN = 7; is different from the pin given in the tutorial where DIN for matrix one is linked to pin 12.

[Juls-Hg]

yes i adjusted pins

maybe i have to return the boards then, thankfully i have a right to return here in germany

[TomMakesThings]

That's a pain, though lucky you can return parts. The example you gave is essentially a cut down version of the code I wrote, so a good way to test it at least. I haven't got any other suggestions, but good luck with it!

[Juls-Hg]

thank you so much still, i'll chime in again once i get it to work

[Juls-Hg]

Yeah so here's the update.
A new matrix board just arrived today free of charge yet the behavoir stays.
I guess unless I pigtail the cables I have to cancel the project. Since I'm invested in it so deep already I'll look into that. sad for some missing functionality but at least i (maybe) have it lighting up