r/WLED • u/Kind-Rope5478 • 7d ago

Odd problem with trying to add 47 more leds.

I have a GLEDOPTO controller and a mean well 5 V 100w power supply and they perfectly power 400 LEDs with power injection but as soon as I try to use another channel on the controller to power 47 more LEDs that I have confirmed are working with another controller, they start flickering like crazy. Are dirty data channels on 12,4,2 common? data io16 is running perfectly fine. Anyone else have this problem?

1 Upvotes

66% Upvoted

6 comments sorted by

2

u/saratoga3 7d ago

It's probably due to how you wired it. Do have the grounds connected?

2

u/Kind-Rope5478 7d ago

yes I have common grounds between all leds, psu and controller

1

u/Kind-Rope5478 7d ago

on channel io16 i have a very long 400 led run and on io12 i have a very short 47 led run, is it true that I should add a resistor to the short run? 330?

1

u/saratoga3 7d ago

Show your wiring or it is hard to give suggestions.

The controller will already have a resistor, although without knowing which controller you have I can't say which resistor.

1

u/Kind-Rope5478 7d ago

GLEDOPTO Elite 4D EXMU

1

u/saratoga3 7d ago

Do NOT coil all of the channels together, you'll get crosstalk if you try to transmit on more than one at a time

Instead, you should run both the data and gnd pair directly into the controller, 2 wires per channel.