Hi FastLED Community. Thanks in advance for reading my post.

Archive FastLED Archive
,
1

Hi FastLED Community. Thanks in advance for reading my post.

I am looking to purchase a ready-to-run solution (hardware with FastLED running and preconfigured for me). I want it able to output to 6800 SK9822 pixels with a refresh rate of 25hz. I think about a 6Mhz clock will do fine.

I need a default demo that runs at powerup that turns through a bunch of colors in a loop.

I have already created this 6800 LED assembly. Every 120 LEDs has its own 5V power supply and a digital isolator for both clock and data that is rated for over 100Mhz.

Anyone have something that could be quickly configured to try driving this assembly?

I worry that the clock degrades too much over the length and this assembly has to be split up and driven by 3 controllers.

2

You will probably have to use parallel output for that many. Sort of hard to give advice without more details. How is it laid out? 1D strips? 2D matrix? What’s the intended purpose?

You should order a teensy and a couple octo adaptors and spend some time on the pjrc forums.
https://www.pjrc.com/teensy/td_libs_OctoWS2811.html

3

Its 57 1-meter long strips, each with 120 pixels.

I am now able to drive about 5000 pixels at 6Mhz / 30hz refresh. Past this, I get flickering.

I am looking to throw something else on here as a quick sanity check and see if its worse, better, or the same.

I think I understand why the clock degrades. Currently working a scheme to solve with a repeater of sort.

Has anyone written a decoder for the Saleae Logic?