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====== Muse Software ======

This page describes my software setup to communicate with the [[https://choosemuse.com/|Muse]] brain-sensing headband.

<WRAP center round info 40%>
These instructions have only been lightly tested.
</WRAP>


===== Overview =====

I am running the Muse software on a MacBook Pro (Retina, 13-inch, Early 2015).  These notes apply to using the Muse LSL software to communicate with the Muse or Muse 2 using a BLED112 bluetooth USB dongle.

Base software environment:

  * Mac OS Mojave (10.14.3)
  * Default Python 2.7, but Python 3.x preferred

===== To Install Python 3 =====

These instructions are based largely on [[https://docs.python-guide.org/starting/install3/osx/|Installing Python 3 on Mac OS X]] from [[https://docs.python-guide.org/|The Hitcher's Guide to Python]].

Open a terminal (e.g., iTerm) to run these commands.

  * Install XCode Command Line Tools following instructions at [[https://developer.apple.com/download/more/|More Downloads for Apple Developers]].
  * Install [[https://brew.sh/|Homebrew]]((I am also using [[https://guide.macports.org/|Mac Ports]] to manage some software packages, which may cause conflicts with Homebrew.)) using the command:

  $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

  * Adjust PATH, if necessary((Set ''export PATH="/usr/local/opt/python/libexec/bin:$PATH"'' in your Bash startup file, e.g., ''.bash_profile''.)).
  * Install Python using this command:((Python 3 is installed by default with this command.))

  $ brew install python
  
===== Setup Virtual Environment =====

  $ mkdir muse
  $ cd muse
  
==== Python 2 ====

  $ virtualenv -p python2 py2
  $ source py2/bin/activate

==== Python 3 ====

  $ virtualenv -p python3 py3
  $ source py3/bin/activate

==== When Done ====

When done working with muse, either close the terminal window, or deactivate the virtual environment with...

  $ deactivate
  
  
===== Install Muse LSL and Run a Streamer and a Viewer =====

Muse software is described at [[https://github.com/alexandrebarachant/muse-lsl|Muse LSL]].  

  $ pip install muselsl

Plug in the Bluetooth USB (BLED112) dongle and turn on your Muse headband before running ''muselsl''.

  $ muselsl stream
  
Open another terminal window, switch to the install directory, and run the visualizer:

  $ cd muse
  $ muselsl view -v 2

===== What Could Go Wrong? =====

==== Missing Packages ====

If some packages show up as missing when installing muselsl, install them manually:

  $ pip install nose coverage

==== Uninstalling a Distutils Package ====

If an old version of a package (e.g., scipy) was installed using (the old) distutils, the new version might have problems uninstalling it.  In that case, use the ''--ignore-installed'' option:

  $ pip install --ignore-installed scipy
  
==== Some Dependent Packages Don't get Installed ====

If when installing scipy, it complains that matplotlib is not installed, then install it directly:

  $ pip install matplotlib
  
==== Permission Denied ====

If some packages cannot be installed in the virtual environment (or in the system environment), use ''--user'' to install them locally (in the user's ~/Library folder):

  $ pip install muselsl --user