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License: Other
Python bindings for the Myo SDK
License: Other
Hi folk, I am using your github code about MyO Python language.. I can´t read emg data with your code, Could you help me please?
This is the message: 'MyoProxy' object has no attribute 'emg'
Thank you
Hi.
I installed myo-python by running python3 setup.py install
on Windows 10. I have my SDK located at C:\myo-sdk and added the following paths to my PATH:
C:\myo-sdk
C:\myo-sdk\include
C:\myo-sdk\bin
and all of them are visible when I run path
in cmd.exe
. However, I'm unable to issue import myo
on Spyder and on python3 from console. I've also added these paths to my Spyder's PYTHONPATH. Here's the full log:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 957, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
File "C:\Users\William\AppData\Local\Programs\Python\Python35\lib\site-packages\myo_python-1.0.0-py3.5.egg\myo\__init__.py", line 26, in <module>
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 957, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
File "C:\Users\William\AppData\Local\Programs\Python\Python35\lib\site-packages\myo_python-1.0.0-py3.5.egg\myo\_ffi.py", line 191, in <module>
File "C:\Users\William\AppData\Local\Programs\Python\Python35\lib\site-packages\myo_python-1.0.0-py3.5.egg\myo\_ffi.py", line 178, in _getffi
File "C:\Users\William\AppData\Local\Programs\Python\Python35\lib\pkgutil.py", line 632, in get_data
return loader.get_data(resource_name)
OSError: [Errno 0] Error: 'myo\\libmyo.h'
Any suggestions?
In [6]: import myo
File ".\myo\tools.py", line 113
raise a, b, c
^
SyntaxError: invalid syntax
In [7]: import sys
In [8]: sys.version
Out[8]: '3.3.5 (v3.3.5:62cf4e77f785, Mar 9 2014, 10:37:12) [MSC v.1600 32 bit (
Intel)]'
The reraise function in tools.py uses the Python 2 syntax of raise. In Python 3 raise takes a single argument which should be an exception instance or an exception class.
https://docs.python.org/3/tutorial/errors.html#raising-exceptions
Hey,
I tried to start the programm with the example code and followed the instructions before.
On initialiazation of the hub ( hub = Hub()
)I got an error:
Traceback (most recent call last):
File "C:/Users/riecker/Documents/Masterthesis/PythonTestProject/myo-python-master/grabber.py", line 17, in <module>
hub = Hub()
File "C:\Users\riecker\Documents\Masterthesis\PythonTestProject\myo-python-master\myo\__init__.py", line 78, in __init__
self._new()
File "C:\Users\riecker\Documents\Masterthesis\PythonTestProject\myo-python-master\myo\__init__.py", line 99, in _new
self._hub = _myo.Hub()
File "C:\Users\riecker\Documents\Masterthesis\PythonTestProject\myo-python-master\myo\lowlevel\ctyping.py", line 250, in __init__
self._memraise()
File "C:\Users\riecker\Documents\Masterthesis\PythonTestProject\myo-python-master\myo\lowlevel\ctyping.py", line 170, in _memraise
raise MemoryError('Could not allocate %s object.' % class_name)
MemoryError: Could not allocate Hub object.
How can I fix that or why cant the program allocate memory?
Thanks for your effort,
Nico
Dear Niklas,
Sorry, I've completely rewritten my question here. Previously it was different, but formulated in a wrong way. Hopefully it didn't bother you)
I successfully run your example files, but I face an issue during the use of Listener class in my application. I'm making a PyQt app that visualizes the EMG and IMU data in real time. I've written my own listener, based on your example, that puts all the data into a Queue shared between the listener and parent widget. The problem is that I don't receive orientation events at all. Let's take this code for example:
def on_event(self, kind, event): print(kind)
When a listener with this code is created in main(), like in your example, it prints this:
...
EventType: emg
EventType: emg
EventType: emg
EventType: emg
EventType: orientation
...
in a repetitive way and I find it completely correct.
But when I create the same listener in my widget, it gives only :
...
EventType: emg
...
The listener class I use in both examples is the same. The difference is whether I create it in main() function or in my app's widget. Do you have some idea about this issue?
I do it on OSX El Capitan, armbands are up to date.
Thank you very much!
Hi Niklas,
First off, thank you for the work you did here.
I want to know if you can include a sample script for streaming emg data.
Or perhaps get me started via discussion. The orientation data streaming works no problem, but I can't seem to get emg data to stream. I just get a stream of "None" coming in. I'm assuming streaming emg data is a bit less straightforward than streaming orientation data.
Thanks!
Hello,
I have an error when using the following method rotation_of.
Indeed math.sqrt can handle only one argument.
I'm wondering if the coma have to be replaced by a multiplication.
Product of the square of the magnitudes.
k = math.sqrt(source.dot(source), dest.dot(dest))
Best regards,
Hello Niklas,
Thank you for the work you've put into making this. I am encountering an error when i run the hello-python module. the error is " [Error 126] The specified module could not be found " and it is with respect to the libmyo.init() function call. Could you provide some info on this?
Hello,
This is my first time commenting on Github, if it is not the right place to report this issue, please directly me to the correct place.
I am new to Mac and Myo. I received my Myo (yeah, finally) last week and I want to do some scripting with Python. I found your wrapper in the Myo forum and got the Python path setup properly (so that I can 'import myo'). I download the Myo 0.8.1 SDK and place the myo.framework it in the /Library/Myo_SDK folder. Then I follow the instruction to set up the DYLD_LIBRARY_PATH by hitting the following line in the Terminal:
export DYLD_LIBRARY_PATH=/Library/Myo_SDK/myo.framework
And when I run the Example python script, I got this error:
OSError: dlopen(myo, 6): image not found
Any clue what is this error? Is it because I didn't setup the path correctly? Or is it because I use the 0.8.1 SDK?
Thanks for your help.
http://myo-python.readthedocs.org/en/latest/
Hey Niklas,
I hope you're well. Thanks for the tremendous contribution. However, I have been tying to import the library in vain but the python wouldn't find myo each time I try running the examples you provide (hello world and feed). I also need to point out that I am new to python so I'm probably missing something.
As you will see in the pictures, I tried pip installing and adding to path according to the methods I have found online but nothing worked. Here are specs of environment:
OS: windows 8.1
Python: version 2.7.10 (which contains pip by default)
I also run the latest Pycharm (community version)
I placed the myo SDK and myo-python folders in c:\python27
Thank you in advance for your time.
It seems like exceptions in ctypes
C-callbacks are somewhat lost, so we need a way to propagate the exception nevertheless in myo.lowlevel.ctyping.Hub.run()
.
When using MacOS SDK 0.9.0, if I try to access the device name from event.device_name, I'm getting the error:
*** AttributeError: function/symbol 'libmyo_event_get_myo_name' not found in library '/<PATH>/myo.framework/myo': dlsym(0x7fd68b55b0d0, libmyo_event_get_myo_name): symbol not found
Hi! I'm trying to run the example to acquire the emg data, but I receive always this from PyCharm console:
Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)
How can I procced?
Hi, it would be useful to know where should one have the myo SDK placed ;) If I could I would just send You a message, there is only one post about it here:
https://developer.thalmic.com/forums/topic/1601/
I cannot wait to start playing with Myo and Python :)
Have a nice new years eve :) cheers
Peter
Hello
I really need help
I want to make a code in order to control solenoid valve of an air muscle depending on the rms value of the EMG Reading and i donot know how to get the rms value in real time, all i want is to get the the RMS of the first 64 sample of EMG and when a new sample appear i shift one sample and take the rms of these 64 sample and so on,
Thanks
waiting for a reply
Hi, I would like to know how to make the myo armband vibrate (sorry, I'm not an expert of Python).
Here is my code:
import time
import myo as libmyo
libmyo.init('D:/Program Files/myo-sdk-win-0.9.0/bin')
class Listener(libmyo.DeviceListener):
def on_connect(self, myo, timestamp, firmware_version):
print("Hello, Myo!")
def on_disconnect(self, myo, timestamp):
print("Goodbye, Myo!")
def on_battery_level(self, event):
print("Your battery level is:", event.battery_level)
def on_pose(self, myo, timestamp, pose):
if pose == libmyo.Pose.fist:
print("Pose: Fist")
return False
if pose == libmyo.Pose.double_tap:
print("Pose: Double tap")
return False
hub = libmyo.Hub()
listener = Listener()
hub.run(1000, listener)
try:
while hub.running:
print("listening")
time.sleep(0.5)
except KeyboardInterrupt:
print("Quitting...")
finally:
hub.shutdown()
If I want to make the armband vibrate just after the fist pose detected, what should I add?
I saw that there is the function vibrate() in the class MyoProxy, and I tried some things, but I didn't succeed.
Thank you in advance
hi, i am trying to solve for many hours , and i search on internet, but nothing ,
32 bits, 64 bits, python 2.7 (32) , python 2.7 (64), python 3.5 (32) - 64 bits, and nothing
ok.. i look this
------ctyping.py
# Load the library. Could raise OSError. <------- ?? ok ,
self._lib = ctypes.cdll.LoadLibrary(lib_name)
when i try call init() .
File "C:\Python35\lib\site-packages\myo_python-0.2.2-py3.5.egg\myo\lowlevel\ctyping.py", line 119, in init
self.lib = ctypes.cdll.LoadLibrary(lib_name)
File "C:\Python35\lib\ctypes__init_.py", line 425, in LoadLibrary
return self.dlltype(name)
File "C:\Python35\lib\ctypes__init_.py", line 347, in init
self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] No se puede encontrar el módulo especificado
I dont know how fix it
--http://stackoverflow.com/questions/3101981/python-ctypes-windll-error-dlopenself-name-mode-cant-be-found --- not working
Please help me
hello,
I'm a biginner in programming, i'm working on a project with myo to use it with people with Parkinson disease, a month earlier I used the myo master SDK to assure the connection and it worked but now the same script won't work (I didn't change anything) can you help me please to solve this issue :
runfile('C:/Users/ELYES/Desktop/myo_test/myo-python-master/01_hello_myo.py', wdir='C:/Users/ELYES/Desktop/myo_test/myo-python-master')
[autoreload of sitecustomize failed:
Traceback (most recent call last):
File "C:\Users\ELYES\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 705, in runfile
else:
File "C:\Users\ELYES\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
with open(filename, 'rb') as f:
File "C:/Users/ELYES/Desktop/myo_test/myo-python-master/01_hello_myo.py", line 48, in <module>
hub = myo.Hub()
File "C:\Users\ELYES\Desktop\myo_test\myo-python-master\myo\_ffi.py", line 468, in __init__
self.locking_policy = LockingPolicy.none
File "C:\Users\ELYES\Desktop\myo_test\myo-python-master\myo\_ffi.py", line 491, in locking_policy
raise TypeError('expected LockingPolicy')
TypeError: expected LockingPolicy
Hi, i am getting this error. Could you please help me with this.
OSError: dlopen(myo, 6): no suitable image found. Did find:
myo: not a file
Hello,
First of all thanks so much for making a python module for the myo (makes my life so much easier).
However, after installing this on a new machine with the 0.9.0 SDK, I encounter an issue when trying to import myo with
import myo as libmyo; libmyo.init()
Here's the message:
Traceback (most recent call last):
File "C:\Users\TheAt\Documents\Visual Studio 2015\Projects\Myo Test\Myo Test\M
yo_Test.py", line 1, in <module>
import myo as libmyo; libmyo.init()
File "C:\Python34\lib\site-packages\myo\lowlevel\ctyping.py", line 118, in init
self._lib = ctypes.cdll.LoadLibrary(lib_name)
File "C:\Python34\lib\ctypes\__init__.py", line 429, in LoadLibrary
return self._dlltype(name)
File "C:\Python34\lib\ctypes\__init__.py", line 351, in __init__
self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] The specified module could not be found
I'm not sure if this is an issue with my PATH or what but I'd greatly appreciate some help if you get the chance. Thanks!
Edit: I've figured out that my PATH is just stupid and not seeing it so I manually pointed myo-python at the SDK. However, I can't us the line:
hub.run(1000, listener)
as it says that listener is not defined. I'm not sure how to fix this either and would love some help.
Once again, thanks!
Great work!
This is not really an issue, but I just have a question regarding your script.
Is it possible to set the sampling rate with your script? I am writing the data to a text file, and it appears that I am experiencing a delay in the data as I reach the ~350th iterations.
I was hoping by reducing the sampling rate, the delay could be reduced.
Thank you very much.
how to get the pose name or number in python which is made using myo. this is what i tried but i am not getting anything.
from future import print_function
import myo as libmyo
import csv
libmyo.init('C:/sj/secondsem/multimedia/project/myo-sdk-win-0.9.0/bin')
class Listener(libmyo.DeviceListener):
def on_connect(self, myo, timestamp):
print("Hello, Myo!")
def on_disconnect(self, myo, timestamp):
print("Goodbye, Myo!")
def on_orientation_data(self, myo, timestamp, quat):
print("Orientation:", quat.x, quat.y, quat.z, quat.w)
def on_pose(self, myo, timestamp, pose):
if pose == libmyo.Pose.fist:
print("Don't show me 'ya fist!")
return False # Stops the Hub
def main():
hub = libmyo.Hub()
listener = Listener()
p=listener.on_pose()
print(p)
try:
hub.run_once(5000, listener)
finally:
hub.shutdown()
I would like to ask a little question, though I'm not sure if it's appropriate here.
So, I'm using Myo Python for a simple EMG-to-file writing, like this:
def on_emg_data(self, myo, timestamp, emg):
if self.first_sample:
self.start_time = timestamp
self.first_sample = False
self.emgfile.write("%d " % (timestamp-self.start_time+1))
for i in xrange(8):
self.emgfile.write("%d " % emg[i])
self.emgfile.write("\n")
print (timestamp-self.start_time+1)
The problem is that I can't get the meaning of timestamps provided with the signal. They appear to be not regular at all. Let me show it here:
timestamp_differences.pdf
These are differences between subsequent timestamps, and normally they should be all around one central value, but they aren't.
Maybe I'm not treating the uint64_t in a right way? Or I should probably use time.time() instead of timestamps?
Thank you very much for your work. Hope my question won't bother you much.
Bye!
I've been trying to figure this one out for awhile. Right after the download from your repository I will get the classic "No module named myo". I've tried putting in this module manually to python and I will get this error:
EnvironmentError: unsupported platform Linux
I am using a raspberry pi running on debian-linux. Any ideas why this is not working?
Hello,
thank you very much for your work. Maybe you could post a short example or tutorial of how to build the module from source and how to install it, that I can modify the module (fix some issues) and recompile it.
Unfortunately im new at python and dont have any idea where to start and how.
Thank you :)
At line 126 of myo/enum.py, the 'cls' object has no attribute '_values'.
If I run the same example script with Python2.7.8 it works fine, and sticking a breakpoint on this same line shows that the '_values' attribute has been created.
I'm sorry, but I can't understand some of your metaclass magic that's going on in all those initialisers! If you've got anything you'd like me to try, or debug output you'd like added here, please let me know.
Hi again. Just wondering how to get the rssi in the feed_myo.py set up? Currently doing something like myo.rssi returns a string of none. Thanks!
Hi! Thanks for your work. It is beautiful. However, I have one quick question.
If I would like to acquire the raw EMG signal from every pod. Is it possible?
Thanks for your answer. Looking forward to hearing it back from you.
Regards,
Arnold Adikrishna
Hi, is it possible to use multiple Myos with these bindings? If so, how?
Hello,
im turning on the hub: self.hub.run(200, li)
then wait an amount of time to collect data sleep(0.55)
and then I stop the hub: self.hub.stop()
.
These statements are in an endless loop and at the end of this loop I have again a sleep(x)
. This sleep depends on an other thread for which I'm waiting (doesnt matter in this case).
When the x in the last sleep gets bigger I get more data (EMG) from my listener although I stopped the Hub. How is that possible? Could it be the case that the Hub is still collecting data and puffers them? If yes how yould I avoid this ? I need in every loop iteration the same number of EMG samples, independent from the sleeping time.
Thanks for your effort, anybody an idea?
Hi
While using this binding to interact with the Myo, I encountered an annoying problem.
After creating a Myo Hub, and subsequently shutting it down, several times, Myo connect becomes unresponsive and crashes. This obliges me to end the Myo Connect task via the Windows Task Manager and restart the program.
On average, it takes between 6 and 10 times of creating and shutting down hubs, before this happens.
Do you know what could be the cause of this? Is it a computer specific problem? A problem with Myo Connect? Or maybe with the bindings?
Thank you very much!
When I run example script i receive:
File "c:\python3\python34\Lib\ctypes\__init__.py", line 429, in LoadLibrary
return self._dlltype(name)
File "c:\python3\python34\Lib\ctypes\__init__.py", line 351, in __init__
self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] The specified module could not be found
I use: python 3.4
Regards
Quaternion.py --- line 153 and 162
yaw=math.asin(2*x*y+2*z*w)
gives
ValueError: math domain error
for avoid this in my code i put
try:
yaw=math.asin(2*x*y+2*z*w)
except ValueError:
yaw=0
what happened here?
my resolve is good?
Greetings since Colombia
Edit by NiklasRosenstein 2016-04-30: Code formatting
I am getting an error when reading the rotation on arm after warmup.
Code
import myo
class SampleListener(myo.DeviceListener):
def on_warmup_completed(self, event):
print(event.rotation_on_arm)
myo.init()
hub = myo.Hub()
listener = SampleListener()
hub.run_forever(listener.on_event)
Stack Trace
Traceback (most recent call last):
File "myo_sample.py", line 16, in <module>
hub.run_forever(listener.on_event)
File "C:\Users\fmribeir\AppData\Local\Programs\Python\Python36\lib\site-packages\myo\_ffi.py", line 571, in run_forever
while self.run(handler, duration_ms):
File "C:\Users\fmribeir\AppData\Local\Programs\Python\Python36\lib\site-packages\myo\_ffi.py", line 560, in run
error.raise_for_kind()
File "C:\Users\fmribeir\AppData\Local\Programs\Python\Python36\lib\site-packages\myo\_ffi.py", line 279, in raise_for_kind
raise ResultError(kind, self.message)
myo._ffi.ResultError: (<Result: [1] error>, b'boost::bad_get: failed value get using boost::get')
Please advise.
Cause I can access the orientation but not the gyro nor the accelerometer data so can you please tell me how to access them(gyro and accelerometer)?
I do appreciate your help, sorry but I kind of lost in the documentation that is why I raised ann issue
Hey Niklas,
I was wondering if the self.orientation output represent the yaw pitch and roll (Euler angles) already calculated or is it the raw quaternion?
Thanks
Right now, if an Enumeration
subclass is created from an unexpected value, either NoSuchEnumerationValue
is raised or, if __fallback__
is specified on the enumeration subclass, that value is used instead. Unfortunately, this hides the original value which might be important for debugging purposes.
The following changes shall be introduced to the myo.utils.enum.Enumeration
class, which must be backwards compatible:
__fallback__
enumeration value, if specified, the following evaluates to True for all enumeration objects that have an invalid value: __fallback__ == invalid_enum_value
From @hajjboy95 (2f34a13#commitcomment-12353281)
Iget the error on my mac
Traceback (most recent call last):
File "/Users/ismail/PycharmProjects/techx15/cfm/main.py", line 7, in <module>
from libs import myo as libmyo; libmyo.init()
File "/Users/ismail/PycharmProjects/techx15/cfm/libs/myo/lowlevel/ctyping.py", line 131, in init
self._lib = ctypes.cdll.LoadLibrary("myo")
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 443, in LoadLibrary
return self._dlltype(name)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 365, in __init__
self._handle = _dlopen(self._name, mode)
OSError: dlopen(myo, 6): image not found
Heres is my project setup , Any ideas on whats going wrong?
Thanks!
When I try to run the example code in python 3.4, I get an errors:
hello-myo.py: bad syntax on first print statement
pose-show.py: mo such module "myo"
Good morning,
I am a novice. I am trying to read data from the Myo Wristband. I have read the documentation on how to import packages into my anaconda distribution. I can see the module called myo when I list the packages within the terminal but when I try to run any of the examples, I get the following error:
runfile('/Users/edgarcolin/Documents/3D printing/myo-python-master/examples/feed_myo.py', wdir='/Users/edgarcolin/Documents/3D printing/myo-python-master/examples')
Traceback (most recent call last):
File "", line 1, in
runfile('/Users/edgarcolin/Documents/3D printing/myo-python-master/examples/feed_myo.py', wdir='/Users/edgarcolin/Documents/3D printing/myo-python-master/examples')
File "/Users/edgarcolin/anaconda/lib/python2.7/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 699, in runfile
execfile(filename, namespace)
File "/Users/edgarcolin/anaconda/lib/python2.7/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 81, in execfile
builtins.execfile(filename, *where)
File "/Users/edgarcolin/Documents/3D printing/myo-python-master/examples/feed_myo.py", line 2, in
import myo as libmyo; libmyo.init()
ImportError: No module named myo
Hello folks,
Firstly, i used hello_myo.py codes in NiklasRosenstein's examples folder for all of my experiments. I'm trying to collect emg data in each time interval for example 5 sec. We know that the sample rate for EMG data in myo is 200Hz and it means that program take a data each 0.005 sec (i change your default rate). During the 5 sec the number of total data should be 5/0.005 = 1000 but it was different values, and never be 1000 data. Sometimes, it was around 400, sometimes is 700 and the other times is 500. Then i changed the sample rate to 0.001 sec, number of datas was around 300 when i expected 5/0.001=500. Then i changed again the sample rate to 0.05, it did not give expected number of data. Why it is happening and is there any solutions?
Hello,
Due some errors (cant figure out exactly from where) I need to unpair the device. In the Myo Connect software there is a button, but is it also callable as a function?
Thank you!
Hi Niklas,
Thank you for providing a Python API for the Myo. I was working with the device for some time and noticed a weird behavior while using your API.
When starting to connect to the armband I run into the problem that an invalid event type is registered causing a runtime error (as defined in the if statement in the file myo/init.py starting in line 324).
I would get this event sometimes during the initial connection procedure or shortly after connecting and using the armband.
After narrowing down the root cause for this behavior I added an additional check in the if statement that deals with invalid event types. This fixed the issue and everything runs stable.
Do you or anybody else happen to have experienced anything like this before? If you want, I can of course share the details of my modification or make a pull request?
The environment I run is the following:
Mac OS X 10.10.4
Myo Connect 0.15.0
Kind regards,
Tomek
As i am running the code in spyder3 it is giving error like module 'myo' has no attribute 'init'
hi Niklas Rosenstein
i'm really interested in your work ,very amazing//
but i tried to run your code in whezziy linux giving error unsupported platform
im using raspberry pi 2
i want to insert your code in my project , so i will be Thankful if you helped me to run this code
thanks for your hard working
Hello,
I couldnt find any information about the format of the emg data. Is it the raw EMG data, or is it
already processed by the MyoSDK ?
Thanks :)
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Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.