node-unicornhathd

A Node.js module for the Pimoroni Unicorn Hat HD, for the Raspberry Pi.

Author

Werner Vesterås [email protected]

Documentation

UnicornHat.setBrightness(brightness)

Sets the brightness of the LED's. 1.0 is the maximum brightness.

UnicornHatHD.getBrightness()

Returns the current brightness. The default brightness is 0.5.

UnicornHatHD.setAll(red, green, blue)

Sets all LED's to the color specified. Use numbers between 0 and 255 to specify the color components.

UnicornHatHD.setPixel(x, y, red, green, blue)

Sets the pixel at coordinate X, Y, to the color [red, green, blue].

UnicornHatHD.getPixel(x, y)

Retrieves an array of the color components at coordinate X, Y.

UnicornHatHD.clear()

Clears the buffer.

UnicornHatHD.show(flip_horizontal, flip_vertical)

Displays the buffer, flipped around the horizontal or vertical axis, or both.

UnicornHatHD.off()

Clears the buffer and turns off all the LED's.

Example program

var UnicornHatHD = require('unicornhat-hd');

var unicornHatHD = new UnicornHatHD('/dev/spidev0.0');

unicornHatHD.setBrightness(1.0);

unicornHatHD.setPixel(0, 0, 255, 0, 0);
unicornHatHD.setPixel(1, 0, 0, 255, 0);
unicornHatHD.setPixel(2, 0, 0, 0, 255);

var flipHorizontal = true;
var flipVertical = false;

unicornHatHD.show(flipHorizontal, flipVertical);