Led: WS2801 (32+15 leds) Power Supply: 3A 5V RPI 2 I had flickering problem, but it was solved by soldering all wires. External 5v connected to RPI GND. So here is my problem: I set red, all leds are red - then 1 sec later, this led changes his color to opposite If blue - it became red and etc. I noticed, that if I use half brightness, led stays in correct color. All other leds look stable, but this one flashes quickly with different colors.