SK9822 APA102 RGB Pixel 30LED Strip

Move over WS2812B SK6812 STRIPS , there's a new LED strip! These fancy new APA102 SK9822 LED strips are a great upgrade for people who have loved and used WS2812B strips for a few years but want something even better. APA102 SK9822 LEDs use generic 2-wire SPI, so you can push data much faster than with the WS2812B / SK6812 800 KHz protocol and there's no specific timing required. They also have much higher PWM refresh rates,  it has less flickering, particularly at low brightness levels.

Like WS2812B SK6812 LEDs , APA102 SK9822 LEDs are 5050-sized LEDs with an embedded microcontroller inside the LED. You can set the color/brightness of each LED to 24-bit color (8 bits each red green and blue). Each LED acts like a shift register, reading incoming color data on the input pins, and then shifting the previous color data out on the output pin. By sending a long string of data, you can control an infinite number of LEDs, just tack on more or cut off unwanted LEDs at the end. 

However, unlike WS2812B SK6812, these LEDs have 2 wires (input and output) for sending data - one clock pin and one data pin. That means you need two pins, not one, to control APA102/SK9822. 

Another nice thing about APA102 SK9822 is their high PWM rate. You only have to set the 24-bit color data for each pixel LED once, and then the LED+built-in-chip will handle the PWMing of the red, green and blue. On SK6812, this PWM rate happens 400 Hz, which works well but is noticably at lower brightnesses and if the strip is moving in any way.  APA102 SK9822 have a 20 KHz PWM rate, so even when moving the strip around, you won't see the pixelation, the color blending is very smooth.

APA102 SK9822 30LEDs pixel strips standard come in 5 meters per roll , two spare wire on the both end to feed the power , however , it also can be customized in any length if it will be more convenient for application .

The strip is made of flexible PCB material, and comes with a cutting lines between each LED . You can cut this stuff pretty easily with wire cutters, Of course, you can also connect strips together to make them longer, just watch how much current you need .