homebrewdj-launchpad-driver - Launchpad Mini (MK2) Driver for Node from homebrewDJ

To Play Snake, look here:

Make sure you have a Launchpad Mini MK2. If you have a MK1, MK3, Pro or S and want to help write an issue

1. download node.js and python
2. download this repo (via command line or via the download button above)
3. open the downloaded repo in a command line (cmd.exe (windows), terminal (mac) or bash(linux))
   • if you are on windows, type npm i -g windows-build-tools
4. npm install
5. npm run example:snake

About

This Module implements a Interface between a Launchpad Mini MK2 and Javascript Events with node-midi. See the example below on how to use this module

Installation

From NPM

npm i homebrewdj-launchpad-driver

From Source

npm i https://github.com/thallosaurus/homebrewdj-launchpad-driver.git

Requirements

Be sure that you have this installed beforehand the installationprocess will fail

• OSX

  • Some version of Xcode (or Command Line Tools)
  • Python (for node-gyp)

• Windows

  • Microsoft Visual C++ (the Express edition works fine)
  • Python (for node-gyp)

• Linux

  • A C++ compiler
  • You must have installed and configured ALSA. Without it this module will NOT build.
  • Install the libasound2-dev package.
  • Python (for node-gyp)

If you use Windows, you can also use npm install --global windows-build-tools

Examples

const { hDJMidiRecv, hDJRecvEvent, hDJMidiOutputBuffer, getRandomColor, ButtonId } = require("homebrewdj-launchpad-driver");

let h = new hDJMidiRecv();

//Get all connected MIDI Devices
console.log("available devices:");
console.log(h.enumeratePorts());

//For example, we use input 0 and output 0
h.connect(0, 0);

h.on(hDJRecvEvent.MatrixEvent, (data) => {
    console.log("Someone pressed the matrix at", data.pos);
});

h.on(hDJRecvEvent.ButtonPress, (data) => {
    console.log("Someone pressed the button", data.button);
    console.log(ButtonId[data.button]);
});

//Fill a new Array with some random colors
let data = new Uint8Array(hDJMidiOutputBuffer.width * hDJMidiOutputBuffer.height).map(e => {
    return getRandomColor();
});

for (let y = 0; y < hDJMidiOutputBuffer.height; y++) {
    for (let x = 0; x < hDJMidiOutputBuffer.width; x++) {
        let i = x * hDJMidiOutputBuffer.height + y;

        //write buffer onto transfer buffer
        h.boundBuffer.setXY(data[i], {
            x: x,
            y: y
        });
    }
}

setTimeout(() => {
    h.boundBuffer.flush();
}, 5000);

See /examples for more example code

run npm run example:checkerboard or npm run example:snake for a demonstration