36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
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# Neopixel matrix width
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For Neopixel matrix (strip) on the specified [pin](/device/pins),
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set the width of that matrix. This informs the simulator to display
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the Neopixel strip as a matrix.
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```sig
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pins.setMatrixWidth(Digital.P1, 16)
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```
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## Parameters
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* ``name``: The @boardname@ hardware pin to configure (``P0``-``P20``)
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* ``width``: a [number](/types/number) (for example, from `2` through `16`)
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## Example
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To use the example below, you should add the Neopixel extension to your
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project and then copy the JavaScript code below over to your project.
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The example creates a strip of 25 neopixels corresponding to a 5x5 matrix and then draws
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an `X` on the matrix. Try changing the value of the variable `width`
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to get matrices of different sizes.
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```blocks
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let width = 5
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let strip = neopixel.create(DigitalPin.P1, width * width, NeoPixelMode.RGB)
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strip.setMatrixWidth(width)
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pins.setMatrixWidth(DigitalPin.P1, width)
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for (let i = 0; i <= width - 1; i++) {
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strip.setMatrixColor(i, i, neopixel.colors(NeoPixelColors.Red))
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strip.setMatrixColor(width - (i + 1), i, neopixel.colors(NeoPixelColors.Blue))
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}
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strip.show()
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```
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