Updated timings for ws28xx/sk68xx & clones. #9
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The existing timings don't work reliably with all my various ws28xx clones. This set of timings is more reliable. I added some notes about constraints I discovered. It seems WLED uses 400ns/800ns, which is below datasheet values, but within those discovered constraints. FastLED uses similar to the previous values here (300/640?) and is also glitchy on some of my LEDs than need >= 350ns T0H to work reliably.
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The existing timings don't work reliably with all my various ws28xx clones. This set of timings is more reliable.
I added some notes about constraints I discovered. It seems WLED uses 400ns/800ns, which is below datasheet values, but can be a little glitchy on one chipset I tried.
I've used 6 different types of LEDs - these work for all of them.
https://photos.app.goo.gl/nF5x5BMQ2qTPjZ6x8 - some of my tests. The lower genuine (I think) ws2812 works in all cases - original timing and mine. Another 8x8 panel of unknown LEDs only works when T1H >= 850ns and T0H >=350ns. LED tubes from ClenLED using UCS2903 chips need at least 800ns T1H and 400ns T0H