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You could use APA102 led strips, they use an "spi-like" protocol (see datasheet) which is much less time-restrictive. Using the right parts is IMHO a better solution than adding more parts to get something working.

aaa
– aaa

11/07/2016 17:54:14
Commented Nov 7, 2016 at 17:54
Plus, NeoPixel's timing constraints are so bad that you can't even generate the pixels on the go. You need to put the whole strip in memory, before writing it. The APA102 led strips can be "streamed", pixel by pixel. So you can "calculate-send, calculate-send, calculate-send" to theoretically drive limitless strips witouth using limitless memory ;)

aaa
– aaa

11/07/2016 17:57:40
Commented Nov 7, 2016 at 17:57
@Paul wrote: "NeoPixel's timing constraints are so bad that you can't even generate the pixels on the go". No, they aren't so bad. See: NeoPixels Revealed: How to (not need to) generate precisely timed signals.

Edgar Bonet
– Edgar Bonet

11/07/2016 19:06:20
Commented Nov 7, 2016 at 19:06

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