In my main loop I have:
When strip.show() is called a random LED blinks very quickly. I have tried using the FastLED libray and that does the some thing with the equivalent show command.
I am using a 12 LED ring with a 1K resistor on the data line.
The power to the LED ring is off a separate 5v source and has a 1000uF capacitor across the 5 volt input and ground.