Random flickering

Question

Random flickering

emoryy opened this issue 7 years ago · comments

Hello!
I've just tried this, but i'm experiencing some random flickering when playing patterns.
See this video, showing the patterns "TV" and "Sinelon": https://photos.app.goo.gl/wuknWqT7Q6xfnSp42
Using a D1 Mini, and an Adafruit Neopixel ring.
And no, the glitter function is not on.
I don't see this with McLighting at all.

Christian Weidner · Answer 1 · Sun Oct 08 2017 05:37:12 GMT+0800 (China Standard Time)

Cheers,

McLightning is a bit different in dealing with the leds. How many LEDs did you setup? Maybe it is an signal reflection due to wrong LED count. I'm using a 100R series resistor between my Leds and the D1 mini. It that doesn't help, you may try commenting out "yield()" the sheet.

Regards,

Christian

Barta Gábor · Answer 2 · Sun Oct 08 2017 06:00:28 GMT+0800 (China Standard Time)

Thanks for the quick answer! I did have setup 16 LEDs since this Neopixel ring has 16 of them. I've just tried putting a 100Ω resistor between the data pin of the D1 mini and the data in of the ring, but it didn't change anything.

Christian Weidner · Answer 3 · Thu Oct 12 2017 21:44:09 GMT+0800 (China Standard Time)

Hi,

i now tried with a noname 12 LED ring but can't reproduce the problem. I don't see any flickering. The D1 Mini is powered by my computers USB-Port. Wire length is about 15cm, no series resistor, no other changes to the sketch.

Barta Gábor · Answer 4 · Thu Oct 12 2017 22:04:23 GMT+0800 (China Standard Time)

At the moment I strongly suspect that the issue is with the FastLED library. I guess I'll escalate the issue to them.

Christian Weidner · Answer 5 · Thu Oct 12 2017 22:12:39 GMT+0800 (China Standard Time)

I'm using FastLED 3.1.6 with this sketch.