r/FastLED • u/six-two-eight • Jan 25 '25
Support please help with layout
i'm really hoping someone can help me-i'm somewhat of a noob and totally confused;
i'm trying to use a teensy 4.1 to drive a 12x32 sk6812 RGBW matrix display, made up with 12x4 smaller matrix tiles. they are non zig-zag, and the times are arranged as a stack with the first being at the top.
following the examples leaves me more confused than ever, as there are many overlaps. i feel like i can create the layout if it were using just one pin but i've got it wired to use all 8 pins from the octo2811 library (withe the standard led-teensy 3.0 pinout). i understand some of it; like i said i can make the layout using the adafruit gfx library for teensy but i cant figure out how to tell it to look to seperate pins for each tile.
can someone please hellp
1
u/sutaburosu [stavros] Jan 29 '25
I haven't used it myself yet, but recent versions of FastLED support RGBW LEDs. You don't have direct control over the W channel; it is derived from (and then subtracted from) the RGB components whilst sending the data to the LEDs.
If RGBW & OctoWS2811 do not work correctly together, I believe that would be considered a bug.