I’ve been playing around with a single WS2801 25 LED strand from adafruit coupled with an Arduino Uno for the past few days. If I understand it correctly, the FastSPI code would be beneficial to someone who would like to drive a large number of LEDs at the maximum refresh rate. However, due to the latch time of the WS2801, isn’t there a maximum refresh rate that can be achieved? I can’t seem to drive the WS2801 strip at faster than ~1.68 ms/refresh, even though the latch time is listed in documentation as 500us.
So, let’s say I was going to point an ultra-high speed video camera at the LED strip (40,000+ frames per second), is there any way to push the WS2801 faster?
Granted, my usage case may be a rare one, but it seems to be a puzzling problem nonetheless.