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arduino based MPC like midi controller

bochenbochen
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  • Description
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  • Logs 3
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  • Discussion 7
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  • bochenbochen

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  • hearless midi to serial
  • source code
  • android app
completed project
MISC
arduino midi mpc

This project was created on 03/31/2015 and last updated 9 years ago.

Description

I didn't want to spend 100$ on AKAI MPD. I thought I can make one myself.
So i bought a bunch of buttons, two 74151 multiplexers, an Arduino Uno and went to work.
The program is very simple. It scans through all buttons (two buttons at time thanks to two multiplexeres), debounces buttons if needed and sends midi command through serial port (source code in links).
On the other side of serial is PC with Hearless Serial to Midi software. This magnificent program converts serial input into midi commands. Then it can be used in all sorts of programs like FL Studio or ableton.
If I ever make second version of it I will
1. use better (connected with each other) cables
2. use shift registers to read all buttons state at once.
3. use better (more silent) buttons

Still it works like a charm and I'm left with 100$ in my pocket :)

Components

  • 1 × arduino uno
  • 2 × 74151 multiplexers
  • 16 × pushbuttons

Project Logs
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  • I've made an app for that

    bochen • 12/05/2015 at 18:58 • 0 comments

    I've made Android app that let's me play without a hassle of connecting to pc.

    Here is a link to it: (ITS FREEEEEE):

    https://play.google.com/store/apps/details?id=pl.orendi.bit.

  • midi-to-usb cable

    bochen • 11/01/2015 at 08:37 • 0 comments

    I've bought this little midi - to - ubs cable so I will not have to do the serial-to-usb software mumbo-jumbo every time.

    The istructions I will follow are here: http://shiftmore.blogspot.co.uk/2010/01/quick-and-dirty-arduino-midi-over-usb.html

  • video added

    bochen • 04/16/2015 at 18:28 • 0 comments

    Video with working stuff added:

View all 3 project logs

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Arturo wrote 06/09/2015 at 08:16 • point

you have the wiring diagram? your project is amazing!

  Are you sure? yes | no

bochen wrote 06/09/2015 at 08:34 • point

Hey, I don't have a diagram. I based on this: http://www.codetinkerhack.com/2012/11/how-to-turn-piano-toy-into-midi.html?m=1#more but this uses shift registers and I've used multiplexers but the idea is similar. 

Hanging pin on multiplexer is always 1 (if you use TTL multiplexer at least like 74151). I used this idea and connected buttons to ground and the other side of the buttons to multiplexer IN pins. so when button is pressed multiplexer reads 0. So the logic is turned around there. 

Than it is normal multiplexer scanning (going through all the addresses of multiplexer and reading all the inputs on the OUT pin of multiplexer). 

hope that helps.
br

Pawel

  Are you sure? yes | no

Arturo wrote 06/09/2015 at 08:06 • point

Thanks!

  Are you sure? yes | no

Arturo wrote 06/09/2015 at 07:45 • point

you have sketch? please!

  Are you sure? yes | no

[deleted]

[this comment has been deleted]

bochen wrote 06/09/2015 at 07:48 • point

Hey, yes it's here: https://gist.github.com/pbochenski/6a77521e7cebe0baaa9f

  Are you sure? yes | no

davedarko wrote 03/31/2015 at 21:37 • point

it's settled. I'll order some of those buttons! Any demo videos?

  Are you sure? yes | no

bochen wrote 04/01/2015 at 06:02 • point

yes do it. It's super easy and fun. I don't have any videos now but I can make one. 

br!

  Are you sure? yes | no

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