This item is sometimes sold under the made up name 'Dotstar' - but this is just a name. Our apa102 led strip come from the same factory and are exactly equivalent.
This apa102 144 led pixel strip uses the newer APA102C LED chips instead of the older WS2801 chips. The APA102C chips are easier to control and offer faster (20kHz) PWM rates for flicker free performance.
There are 144 LEDs per meter, and each strip is sold in a 1 metre long length. Each strip can be easily cut, or can be 'daisy chained' with other strips in order to produce long chains of LEDs. PCB colour is white.
Each LED on the strip is 5050 size, and has an embedded microcontroller inside it which controls brightness levels, and interprets the data you send it. Each strip needs two wires to control all LEDs, one clock and one data. This arrangement makes it easier to use with slower devices like the Arduino Uno.
Power supply to the strip is 5V. It's wise to consider that each LED can consume around 60mA at full brightness - multiply that by 144 (per metre) and you have over 8.6A, or about 43.2W of power dissipation. We recommend a relatively meaty power supply, with connections every 2 to 3 metres on a long run strip.
Each strip is mounted inside a plastic weatherpoof sleeve. This can be easily removed with a sharp knife if need be. At the ends of the strips are male/female 4 pin JST-SH plugs which allow multiple strips to be connected. The power lines are broken out onto separate wires for easy access.