node-rpi-rgb-led-matrix

Pilot your rgb led matrix with Nodejs on Raspberry Pi ! Nodejs binding of rpi-rgb-led-matrix library https://github.com/hzeller/rpi-rgb-led-matrix

**Fork of: easybotics/node-rpi-rgb-led-matrix

It is binding recent version of rpi-rgb-led-matrix library.

Installation with npm

$ npm i cd-node-rpi-rgb-led-matrix

Installation with git

$ git clone --recursive https://github.com/CameronDiver/node-rpi-rgb-led-matrix.git
$ cd node-rpi-rgb-led-matrix
$ npm i

Get some Fun

var LedMatrix = require("cd-rpi-rgb-led-matrix");

//init a 16 rows  by 16 cols led matrix
//default hardware mapping is 'regular', could be 'adafruit-hat-pwm' ect
var matrix = new LedMatrix(16, 16 );
matrix.fill(255, 50, 100);
matrix.setPixel(0, 0, 0, 50, 255);
matrix.update();

The API has changed somewhat since the zeitungen version

LedMatrix API

All operations modify a local frame buffer, only after calling 'Update' are they printed to the display

• Constructor: LedMatrix(rows, cols, chainedDisplays, parallelDisplays, brightness, hardware-mapping, pixel-mapping) default values are rows=32, cols=32, chainedDisplays=1, parallelDisplay=1, brightness=100, pixel-mapping="", hardware-mapping=regular, disable_hardware_pulse=false
• getWidth() return current led matrix width
• getHeight() return current led matrix height
• fill(red, green, blue) fill the led matrix buffer with color specified by red, green and blue. red, green and blue must be between 0 and 255
• setPixel(x, y, red, green, blue) set the color pixel at the position x,y with color specified by red, green and blue. red, green and blue must be between 0 and 255. x must be between 0 and getWidth(). y must be between 0and getGeight()
• drawText(x, y, r, g, b, text, fontFile) draws colored text to the buffer
• drawCircle(x, y, radius, r, g, b) draws colored circle to the buffer
• drawLine(x0, y0, x1, y1, r, g, b) draws colored lines to the buffer
• clear() reset the led matrix display buffer (shut down all leds)
• update() draw the current buffer to the display with vsync