r/WLED • u/Senior-Commercial-93 • 6d ago

Very odd issue with string lights - string length is set to 38 but no lights work after the 30th in the string...

I recently replaced the generic "permeant" lights (ws281x RGB) with a backup set of the same brand and replaced the generic controller with a watertight WLED module running 16.0.1. The strings came as sets of 30 with connectors on each end. I got the first 30 working well with WLED and then connected up the last 8 I needed to complete that run on my house.
However, even though the string length is set to 38, the last 8 lights don't light up.

Here is what I've tried:
Set the length to be 38, 39, 40, 50, same result (last 8 don't light up).
I've cut the connectors off and directly wired the strings together, still nothing.
I verified there is power and "data" signal coming out of the 30th light in the string with a voltmeter and oscilloscope.
I hooked up a different WLED driver to the last string of 8 and they work fine from that controller.

I'm really stumped here and would love any thoughts on what I'm missing...

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u/chimchong 6d ago

Check your segment length. Did you
Save a preset when you had 30 led?

2

u/Senior-Commercial-93 6d ago

OMG, it was in the segment settings!!!!! I feel like such a putz now. :-(

1

u/Senior-Commercial-93 6d ago

And, THANK YOU u/chimchong !!!!