I recommend testing these immediately after receipt with very specific color combinations to exercise each LED individually

Ive wired together 5m of strip with different lengeths of wire between all the sections and still, flawless performance.

I’ve cut and soldered together pieces from rolls dozens of times in a dozen different ways and still.... flawless performance

Amaze your friends and be the life of the party.

Brightness seems good, and if they had worked, I would have loved these things!

I have not tested the entire string yet, but the small segment i cut off the end works perfectly with the FastLED library and an Arduino nano knockoff.

I used the Adafruit Neopixel library with them and they work great.

I used the Adafruit Neopixel library with them and they work great.

They work great and as expected with Arduino controllers and the neopixel library.

Holy crap

Hooked these up to an Arduino using the FastLED library and they worked right away

Brilliant color