Pioneer DDJ 400

This library provides a light wrapper around the midi interface for the Pioneer DDJ 400. The goal is to provide a tool that can help create digital experiences using the DDJ 400 hardware. I've been using it with Electron but it could also work on a Raspberry Pi. There's still more work to be done for this to work in the browser.

Installation

npm i pioneer-ddj

Usage

const pioneerddj = require('pioneer-ddj');

const ddj = new pioneerddj.DDJ('DDJ-400', {});

// Callback every time
ddj.on('play', ({ side, state }) => {
    console.log(`Play buton ${state ? 'pressed' : 'released'} on ${side} side!`);
});

// Switch pads to beat loop mode on left side;
ddj.setPadModeLeft('BEAT_LOOP');

// Turn on pad (lights up) in first row, first column in the beatloop section
ddj.setPadLeft(1, 1, true);

Event API

Example from examples/all.js.

const pioneerddj = require('pioneer-ddj');

const ddj = new pioneerddj.DDJ('DDJ-400');

// Buttons
ddj.on('play', console.log);
ddj.on('cue', console.log);
ddj.on('shift', console.log);
ddj.on('platter', console.log);
ddj.on('beatsync', console.log);
ddj.on('beatsync_long', console.log);
ddj.on('loop_in', console.log);
ddj.on('loop_in_long', console.log);
ddj.on('loop_out', console.log);
ddj.on('reloop', console.log);
ddj.on('call_back', console.log);
ddj.on('call_forward', console.log);
ddj.on('phones_cue', console.log);
ddj.on('hot_cue', console.log);
ddj.on('beat_loop', console.log);
ddj.on('beat_jump', console.log);
ddj.on('sampler', console.log);
ddj.on('load', console.log);

// Global Buttons
ddj.on('load_select', console.log);
ddj.on('master_cue', console.log);
ddj.on('beatfx_back', console.log);
ddj.on('beatfx_forward', console.log);
ddj.on('beatfx_select', console.log);
ddj.on('beatfx_channel_1', console.log);
ddj.on('beatfx_channel_2', console.log);
ddj.on('beatfx_channel_master', console.log);
ddj.on('beatfx_toggle', console.log);

// Pads
ddj.on('pad', console.log);

// Sliders
ddj.on('tempo', console.log);
ddj.on('level', console.log);
ddj.on('crossfader', console.log);

// Knobs
ddj.on('trim', console.log);
ddj.on('eq_high', console.log);
ddj.on('eq_mid', console.log);
ddj.on('eq_low', console.log);
ddj.on('filter', console.log);

// Global Knobs
ddj.on('master_level', console.log);
ddj.on('phones_mixing', console.log);
ddj.on('phones_level', console.log);
ddj.on('beatfx_level', console.log);
ddj.on('load_selector', console.log);

// Jogdials
ddj.on('jogdial', console.log);

Setting API

Although a few methods are available the full API to set values on the controller itself such as the state of the pads, channel levels, loopin/outs etc are still pending.

Values

Although midi usually works with values between 0 and 127 I've interpolated the values returned by this library are interpolated between 0 and 1. This also abstracts away the fact that Pioneer are sending two values on each CC update in order to achieve a higher precision value.

Open TODOs

• [ ] better documentation
• [ ] Fix the way the package is exported in index.js
• [ ] Setting of values (get buttom colours)
• [ ] Support Web midi for browser support
• [ ] Make sure all functions are available on the left and the right side
• [ ] Store board state in class to get the current value
• [ ] Query functions for current board values
• [ ] Clean typescript definition
• [ ] support shift flag

Shout outs

S/O to dinchak and his package node-easymidi which helped make the creation of this package super easy and inspired the EventEmitter style api design.

Disclaimer

This project is not affiated with or endorsed by Pioneer DJ, Pioneer Corporation or AlphaTheta Corporation in any way.