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WS2812 NeoPixel Compatible LED Strip.

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Pin names

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VDD
pin
Positive voltage supply (input side)
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DIN
pin
Data input signal
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VSS
pin
Ground (input side)
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VDD.2
pin
Positive voltage supply (output side)
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DOUT
pin
Data output (for chaining to next strip)
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VSS.2
pin
Ground (output side)

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Attributes

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pixels
string
default:"8"
Number of LEDs in the strip
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pixelShape
string
default:""
Pixel rendering shape: “square”, “circle”, or "" (smooth rendering)
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pixelSize
string
default:"5050"
LED package size: “5050”, “3535”, or “2020”

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Chaining

You can chain multiple strips together by connecting the DOUT pin of one strip to the DIN pin of the next strip. All LEDs share the same data line and are addressed sequentially.

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Pixel rendering

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Shape

Set the pixelShape attribute to control how each LED is rendered:
  • "" (default) - Smooth rendering (one pixel per LED, scaled up)
  • "square" - Square pixel rendering
  • "circle" - Circular pixel rendering

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Size

Set the pixelSize attribute to match real-world LED package dimensions:
ValuePackagePixel size
"5050"5×5 mm23 px
"3535"3.5×3.5 mm16 px
"2020"2×2 mm9 px

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Arduino code example

#include <Adafruit_NeoPixel.h>

#define STRIP_PIN 2
#define NUM_PIXELS 8

Adafruit_NeoPixel strip(NUM_PIXELS, STRIP_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  for (int i = 0; i < NUM_PIXELS; i++) {
    strip.setPixelColor(i, strip.Color(150, 0, 0)); // Red
  }
  strip.show();
}

void loop() {
  delay(10);
}

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See also

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Simulator examples

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