I'm seeing most flicking during white when R, G, B LEDs inside the pixel are on, that is the highest power draw state.Kulp16A-B controller. The pixels on the 5' and 10' extensions are having issues. Everything is set for 15% power, so I don't think it's a current issue. The same channel outputs work fine without the extensions.
4.7v volts is getting low. Time for power injection.Voltage is good - 5.02 at the board. Here’s another video of strangeness with just the 18” pigtails. Even at the end of the flickering string I see voltage at 4.7 or higher.
I’ve watched the VCS video on flickering lights and don’t recognize any of the issues that he discusses in my setup.
I get 0V on the data line right now and the controller says that it’s still sending the RGBW test signal. That could be my cheap multimeter not being able to pick up the signal due to change rate.See if you can measure the voltage on the data line coming out of the controller. This may tell us if a level shifter is used.