easybotics-rpi-rgb-led-matrix

    0.4.1 • Public • Published

    easybotics-rpi-rgb-led-matrix

    WORKS ON THE RASPBERRY PI 3B AND RASPBERRY PI 4!!!!

    tested on node 8 and node 10, probably works on node13 now

    check out this guys fork: https://github.com/easybotics/node-rpi-rgb-led-matrix/pull/9

    targetted at raspbian jesse

    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: https://github.com/zeitungen/node-rpi-rgb-led-matrix

    Actively being maintained and modified for: https://github.com/easybotics/node-red-contrib-led-matrix

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

    Installation with npm

    $ npm i easybotics-rpi-rgb-led-matrix
    

    Installation with git

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

    Get some Fun

    var LedMatrix = require("easybotics-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, rgbSequence, cliFlags)
        rows: height of led panels in pixels
        cols: width of led panels in pixels
        chainedDisplays: number of chained panels
        parallelDisplays: number of parallel panels
        brightness: initial brightness 0 - 100
        hardware-mapping: 'regular', 'adafruit-hat' etc
        rgbSequence: default 'RGB'
        cliFlags: array of cli flags
    
    • brightness (value)
        set brightness between 0 - 100
    
    • clear ()
        clear the display buffer
    
    • drawCircle (x, y, radius, r, g, b)
        draw colored circle to the buffer
    
    • drawLine (x0, y0, x1, y1, r, g, b)
        draw colored line to the buffer
    
    • drawText (x, y, text, font, r, g, b)
        draw colored text to the buffer
        to use the fonts that come with the repo it looks something like this
    
        const input = "hello world!"; //whever you get the input from
        const font  =  __dirname + '/fonts/' + "5x8.bdf";
        led.drawText(x, y, input, font, r, g, b);
        led.update();
    
    • fill (r, g, b)
        fill the buffer with a color
    
    • getHeight ()
        get height of addressable space
    
    • getWidth ()
        get width of addressable space
    
    scroll
    setImageBuffer
    mysterious methods back from before we picked up this library 
    
    • setPixel (x, y, r, g, b)
        set pixel to a color
    
    • update ()
        Draw the current buffer to the display (with vsync!)
    

    Install

    npm i easybotics-rpi-rgb-led-matrix

    DownloadsWeekly Downloads

    23

    Version

    0.4.1

    License

    GPL2.0

    Unpacked Size

    14.2 MB

    Total Files

    175

    Last publish

    Collaborators

    • ryanmich251
    • hilo90mhz
    • keptan