BTF-LIGHTINGSK6812(WS2812B) RGBW LED Chips 100PCS RGB+Natual White Individually Addressable 5050SMD Module Pixels Light DC5V White PCB Chasing Dream Color for Christmas(No Adapter or Controller)

Tal cual, lo que llegó fué una caja vacía. No merece una estrella, pero no permite continuar sin esa calificación.

These work well and are very bright. Libraries for these are easy to find. They are not easy to solder wire to the pads. I designed and 3D printed 2 pixel light units for a project I used these for. I included channels to hold the wires and leave the back open. If it wasn’t for that, I would have had a more difficult time using these. I wish the manufacturer had extended the solder pads to the edge of the board. If they had, I could have just bridged between the unseparated pixels with solder and used them much more quickly and easily. If they make that change, this would be a 5 star across the board!

These can be controlled by A**fruit neopixel library using NEO_GRBW , NEO_KHZ800 on my TTGo 0 ESP32 board. Owing to the 'overlap' between 5v TTL standard and 3.3V logic levels I was able to feed 5v power to pixels (USB Voltage from TTGO) and a 0/3.3V bit stream directly from ESP to first pixel (D in) with a 270 Ohm resistor in series and have good control. Since each pixel re-generates the bitstream in terms of logic levels the first pixel gives full 0/5V out for the next pixel. Minus one star for messy screen print. If you see light as in pic above and are expecting 4 of the same color, you probably made a mistake somewhere. There is a fill command you can use specifying a range of leds (starting at 0) to fill all with a given color. It is handy as a basic test that all work and have relatively the same output levels.

These light modules work perfectly. Keep in mind that they aren't connected together though. I spent hours wiring them into a matrix... They're also RGBW, so you'll need a special library to control them as when I tried FastLED with them(thinking they were WS2812's), it didn't work properly. FastLED may have added support for SK6812 RGBW LEDs, but you'll have to check first. IIRC I used the NeoPixel library from Adafruit to get them to work.

I made a backlight for a house number sign. I used about 30 of these. It was so much soldering I near about lost my mind. Nice result though, the warm white LEDs are really nice.