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View Full Version : Duotriginti, 32-channel neopixel driver for Teensy 4.1



hubbe
10-19-2020, 06:55 AM
I've been using OctoWS2811 for my xmas display for years. Last year I ran 8000 LEDs from two OctoWS2811 adapters, which has worked great. (https://fredrik.hubbe.net/chaosdisplay/ for more information)
This year, I'm planning to go for 10000 lights, and I noticed that the OctoWS2811 library now supports Teensy4.1, potentially driving all the digital outputs in one go, which seems nicer than having a whole bunch of OctoWS2811 adapters running in parallel. Also, the USB speed is starting to become a problem with the OctoWS2811 adapters. So I went ahead and designed a quad-octows2811 adapter which I call DuotrigintiWS. It's fully capable of running 32000 LEDs at 30 fps. (Or 16000 LEDs at 60 fps)

Here is a first test video showing it in action.


https://www.youtube.com/watch?v=ytu9jmGPunA

I will be sharing full details of how to build these on my website, including kicad sources and BOM, but that will take a little while.
For anybody who is really impatient, here is an oshpark link for the PCB: https://oshpark.com/shared_projects/HavteW8o

ShadowLight8
10-19-2020, 04:30 PM
This looks very interesting and am looking forward to the details!

BTW, the video you included is unavailable as it is private.

hubbe
10-19-2020, 06:53 PM
Sorry about that. Video should show up now.