Myself and a couple others are seeing some strange flicker/glitch issue with the FadeToBlackBy()

fastled-support
gplus
(Rory Hayes) #1

Myself and a couple others are seeing some strange flicker/glitch issue with the FadeToBlackBy() calls on the Demo100 example. Is anyone familiar with this behavior? You can see an example of the flicker in the github issue I created, which got some comments indicating this issue is present on a few platforms.
https://github.com/FastLED/FastLED/issues/638

(Yves BAZIN) #2

@Rory_Hayes which board are you using ?
which version of the fastled library

(Scott Peterson) #3

To avoid flicker in some of the animations I always have to add

#define FASTLED_INTERRUPT_RETRY_COUNT 0

(Rory Hayes) #4

@Yves_BAZIN esp8266, but others reproduce this issue on teensy 3.x. the neopixels are powered by 5V and GND (esp8266 off of 3.3V, they share common ground)
Most recent versioni FastLED, just cloned from github last week :slight_smile:

(Rory Hayes) #5

@Scott_Peterson Thanks, I’ll try this ASAP! :slight_smile:

(Yves BAZIN) #6

@Rory_Hayes thank you then try what @Scott_Peterson has suggested and you can also add.
#define FASTLED_ALLOW_INTERRUPTS 0
before the include of the fastled library

(Rory Hayes) #7

Fantastic!! disallowing interrupts seems to have fixed the issue! Now that I think about it, it makes sense since I’m bitbanging the output!
Thank you both very much, I’ll pass this info on to the github issue followers as well :slight_smile:

(Yves BAZIN) #8

@Rory_Hayes cool !! Great googles by the way