myo-python - Python bindings for the Myo SDK¶
This module is a
ctypes based wrapper for the Thalmic Myo SDK that
is compatible with Python 2 and 3. The source is hosted on GitHub.
There are two ways to use the myo-python bindings: You can either implement
myo.DeviceListener (this is the preferred method as it includes
the least overhead) or you can use the
myo.Feed object to read the
most recent data when you really need it.
The preferred method to use the Myo SDK is to implement the
myo.DeviceListener interface. It defines a number of functions
that will be invoked on various events and when data becomes available.
from time import sleep from myo import init, Hub, DeviceListener class Listener(DeviceListener): def on_pair(self, myo, timestamp, firmware_version): print("Hello, Myo!") def on_unpair(self, myo, timestamp): print("Goodbye, Myo!") def on_orientation_data(self, myo, timestamp, quat): print("Orientation:", quat.x, quat.y, quat.z, quat.w) init() listener = DeviceListener() hub = Hub() hub.run(1000, listener) try: while True: sleep(0.5) finally: hub.shutdown() # !! crucial
In many cases, it is much easier to just read the most recent data from
a Myo armband when you actually need it. The
myo.Feed is an
implementation of the
myo.DeviceListener interface that creates
myo.Feed.MyoProxy object for each connected Myo which always
contains the most recent data. These proxy objects are thread-safe.
from myo import init, Hub, Feed init() feed = Feed() hub = Hub() hub.run(1000, feed) try: myo = feed.wait_for_single_device(timeout=2.0) if not myo: print("No Myo connected after 2 seconds") print("Hello, Myo!") while hub.running and myo.connected: quat = myo.orientation print('Orientation:', quat.x, quat.y, quat.z, quat.w) finally: hub.shutdown() # !! crucial
Since the Thalmic Myo SDK is only available for Windows and Mac, myo-python can only be used on these two platforms.
pip install myo-python
- Download the Myo SDK
- Make sure the library can find the Myo SDK.
PATHon Windows -
DYLD_LIBRARY_PATHon Mac. You can add something like this to your ~/.bashrc, export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:/Developer/myo_sdk/myo.framework
You can also pass the path to the shared library to