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ForumCSMIO/IP controllers and Software - discussion forum: CSMIO/IP with simCNC softwareinstall pyserial

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install pyserial

#1 · 24 September 2023, 20:34

Hello CNC friends

I would like to send data in a Python script over a serial port
To do this I have to do “serial import”, but unfortunately I get an error that this module cannot be found.
In the normal Python installation on Windows it works.
How can I do “pip install pyserial” in simcnc?

#2 · 25 September 2023, 22:12

Hi,
simCNC uses a "normal" Python!
If you have several Python versions on your PC, then you must check which one is set for simCNC. You will find the path under your simCNC installation folder (e.g. C:\Program Files\simCNC\python) in the file pythonInstallationPath.
You can look at the pythonInstallationPath file with a normal text editor, e.g. Notepad, and it will say something like C:\Users\boess\AppData\Local\Programs\Python\Python310\python.exe.
You can change the path if you want to use a different (i.e. usually newer) version or you can go to the scripts directory and take the pip from that folder. For me it would be this folder: C:\Users\boess\AppData\Local\Programs\Python\Python310\Scripts

VG
Anton

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#3 · 2 October 2023, 06:51

I will just add two things:

If the pip installer does not work, it should be reinstalled by modifying the Python installer:

- As a place to install the libraries, I recommend a permanent place independent of simCNC.
I install the libraries in the Python home folder C:\Users\wojtek\AppData\Local\Programs\Python\Python311

#4 · 11 July 2025, 06:39

If you have only one version of python installed (by simCNC installer), typing 'py -m pip install ...' will use same python as simCNC, so you can install packages from terminal and use then later in the simCNC scripts.

Eventually you can type 'py -3.11 -m pip install ...' this will explicitly call python 3.11 which is used by recent version of simCNC.