go-rpi-ws281x

golang binding for rpi_ws281x, userspace Raspberry Pi PWM library for WS281X LEDs. Supports any Raspberry and WS2812, SK6812RGB and SK6812RGBW LEDs strips, this includes Unicorn pHAT and NeoPixels

Installation

The recommended way to install go-rpi-ws281x is:

go get github.com/mcuadros/go-rpi-ws281x
cd $GOPATH/src/github.com/mcuadros/go-rpi-ws281x/vendor/rpi_ws281x
scons

Requires having install golang and scons (on raspbian, apt-get install scons).

Examples

// create a new canvas with the given width and height, and the config, in this
// case the configuration is for a Unicorn pHAT (8x4 pixels matrix) with the
// default configuration
c, _ := ws281x.NewCanvas(8, 4, &ws281x.DefaultConfig)


// initialize the canvas and the matrix
c.Initialize()

// since ws281x implements image.Image any function like draw.Draw from the std
// library may be used with it.
// 
// now we copy a white image into the ws281x.Canvas, this turn on all the leds
// to white
draw.Draw(c, c.Bounds(), image.NewUniform(color.White), image.ZP, draw.Over)

// render and sleep to see the leds on
c.Render()
time.Sleep(time.Second * 5)

// don't forget close the canvas, if not you leds may remain on
c.Close()

Check the folder examples folder for more examples

License

MIT, see LICENSE