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fossasia / pslab-python

Python Library for PSLab Desktop: https://pslab.io
GNU General Public License v3.0
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Connecting PSLab (serial vs pyserial) #135

Closed chrvoigt closed 3 years ago

chrvoigt commented 3 years ago

hi all, using pslab-python on a Macbook (Mojave) should be OK, right? I've installed the library as per readme.md and connected the device (through USB-C). And get an Error message (see below) ... so it's not connecting. Would you say it's my local setup? btw the same error happens if I 'npm start' the desktop app (saying 'no device connected' in the UI) Thanks for any pointers as to what else I should try, Christian

me@laptop ~/code/python/pslab/pslab-python (development) $ ls /dev/tty.usb* /dev/tty.usbmodem00030777621 me@ laptop ~/code/python/pslab/pslab-python (development) $ python Python 3.8.3 (v3.8.3:6f8c8320e9, May 13 2020, 16:29:34) [Clang 6.0 (clang-600.0.57)] on darwin Type "help", "copyright", "credits" or "license" for more information.

from PSL import sciencelab I = sciencelab.connect() Traceback (most recent call last): File "", line 1, in File "/Users/me/code/python/pslab/pslab-python/PSL/sciencelab.py", line 22, in connect obj = ScienceLab(kwargs) File "/Users/me/code/python/pslab/pslab-python/PSL/sciencelab.py", line 86, in init self.H = packet_handler.Handler(kwargs) File "/Users/me/code/python/pslab/pslab-python/PSL/packet_handler.py", line 51, in init self.interface = serial.Serial() AttributeError: module 'serial' has no attribute 'Serial'

bessman commented 3 years ago

You may have installed serial instead of pyserial.

chrvoigt commented 3 years ago

yes indeed - thanks for the hint !

I had both installed and there was a namespace conflict .. So a dedicated virtualenv did the trick and then 'pip freeze' confirmed that PSL and pyserial are included.

... and now the electron app is running too 👍

I changed the title (since the issues was about python modules), in case someone experiences this as a first hurdle when trying to connect.