Launchpad

A framework for interacting a Launchpad with Overtone through Clojure.

Overtone & Launchpad in Action

Watch me: http://youtu.be/tZrhaTQA9Qk

Clojars

Adding Launchpad as a dependency in your project:

https://clojars.org/launchpad

Usage

Launchpad works through an evented system. While you can do anything with those events launchpad.core setups some useful defaults:

• When :session mode is lit allows infinite scrolling left or right (for greater than 8 phrases)
• When :session mode is lit allows infinite scrolling up or down (for binding more than 8 beats/samples)
• All top control buttons except :user1 / :user2 & :session
  • Enter mode where each grid remembers keys pressed.
  • Grid buttons simply toggle state/light on/off.
• :user1 & :user2
  • Enter mode where there is no persistent grid state.
  • Grid buttons trigger led/fn key-down and off with key-up

Simple example

(use 'overtone.live)
(use 'overtone.inst.drum)
(use 'launchpad.core)

(boot!)

;;Bind to the main grid
(bind :up :0x0 #(kick))
(bind :up :0x1 #(hat3))

;;Bind to the virtual grid @ y=1 (i.e session mode on and down btn once)
(bind [:up 1] :0x1 #(hat3))

Plugins

For usage see examples in https://github.com/josephwilk/overtone.device.launchpad/blob/master/docs/demo.clj

• Metronome
• Mapping samples to a row
• Beat sequencing
• Beat sequencing with scroll update

Demo Examples

• Expressing drum/sample positions using LEDS (automatically synching to the beat).
• Adding a metronome cell which flashes with beat
• Turning a grid into an instruments

Explore the code here: https://github.com/josephwilk/overtone.device.launchpad/blob/master/docs/demo.clj

Or if you want to try from the repl

lein repl
(load-file "docs/demo.clj")

Launchpad internal documentation

• http://d19ulaff0trnck.cloudfront.net/sites/default/files/novation/downloads/4700/launchpad-s-prm.pdf

License

Copyright © 2014 Joseph Wilk

Distributed under the Eclipse Public License, the same as Clojure.