Play looped sounds with Twilio from a Novation Launchpad
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README.md

Telepad

Built for Music Hack Day London 2013.

Use a Novation Launchpad and the Twilio API to play looped sounds on up to eight phones.

Demo video!

How?

You'll need a Twilio account, an ngrok account, a list of up to eight sound files hosted somewhere and a list of up to eight phone numbers.

$ npm install telepad

This adds a binary named telepad to ./node_modules/.bin, which should be in your $PATH.

Run ngrok on a port of your choice:

$ ngrok 9999

ngrok will assign you an address. Now you need a JSON config file as follows:

{
  "midi": {
    "port": 0
  },
  "ngrok": {
    "address": "http://abcabc.ngrok.com",
    "port": 9999
  },
  "twilio": {
    "sid": "abcabc",
    "token": "defdef",
    "number": "+440000000000"
  },
  "sounds": [
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+A1.mp3",
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+B1.mp3",
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+D1.mp3",
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+D2.mp3",
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+E1.mp3",
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+E2.mp3",
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+F%231.mp3",
    "https://s3-us-west-2.amazonaws.com/telepad/mp3-128-cropped/Glockenspiel+F%232.mp3"
  ],
  "numbers": [
    "+440000000000",
    "+440000000000",
    "+440000000000",
    "+440000000000",
    "+440000000000",
    "+440000000000",
    "+440000000000",
    "+440000000000"
  ]
}

Then start the Telepad server:

$ telepad

The config file is expected to be named config.json and located in the current working directory. If it's not, you can pass in a relative path.

$ telepad some/other/file.json

The special buttons on the right of the Launchpad will light up red for each phone number in your config. Press them to make a call, you'll see them turn green.

Each row corresponds to a phone and each button corresponds to a sound from your config! Pressing the special buttons again will hang up the calls.

With thanks to Syd Lawrence for midi-launchpad and his helpful advice.

License

Copyright (c) 2013 Joe Corcoran

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.