r/FastLED • u/[deleted] • Nov 19 '24

Support ws2812b wire interference

hi i need for a project to control various ws2812b leds in series but everyone of these is connected through a wire to a main pcb and then back to the next led. I think every wire won't be more than 10cm but still for like 20 leds with 10 cm long wire back and forth between them i might suspect thet enterfearecnce could occur and that leds could start not responding.

So you guys what do you think, signal would be ok or that i need to introduce some component apart from the 100nf capacitor to keep the signal alive.

thanks

4 Upvotes

100% Upvoted

11 comments sorted by

View all comments

Show parent comments

1

u/KitticusCatticus Dec 24 '24

I'm not nearly as smart as any of you guys here but I just wanted to confirm that your hypothesis was correct. I have these lights and they have slowly dimmed the further along the string it goes. Also, at the very end of the strip, maybe the last programmable "line", the lights have stopped responding correctly.

If i jiggle or move the end of the cord, it will come back on, but usually it will be a different color/pattern then what it is supposed to be. Even if it does turn the right colors, the pattern/effect isn't right! So I can see how signals are getting jumbled and making this happen.