Strange String Behaviour

BazzaV

New elf
Joined
Jan 3, 2021
Messages
19
Location
Yass, NSW.
So with time on my hands and not able to go to SA like we had planned I have decided to start assembling my mini mega tree but have come across a strange behaviour with some of the strings I bought (2 so far out of 20). They are Ray Wu "50pcs/set bullet type DC5V addressable 12mm WS2811 RGB led smart pixel node." The pixel tester is from Hanson Electronics "2811 pixel tester."

I have a 5v power supply and the pixel tester powered by it. String A plugs into the tester and it works fine. String B plugs into the tester and doesn't light up at all. If I plug string A into the tester and string B into the end of string A they both work fine.

Any assistance or explanation is greatly appreciated.
 

i13

Dedicated elf
Joined
Jul 5, 2013
Messages
1,049
Are strings A and B perfectly identical? Each pixel resends the data. If they're slightly different, it is possible that string B could understand the data output from the nodes in string A but not from the tester.
 
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