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devbisme / skidl

SKiDL is a module that extends Python with the ability to design electronic circuits.
https://devbisme.github.io/skidl/
MIT License
1.04k stars 118 forks source link

[SKiDL BUG] generate_pcb() #127

Open r4dr3fr4d opened 3 years ago

r4dr3fr4d commented 3 years ago

If I add generate_pcb() to the end of the SKIDL example to try to something I can feed into the pcbnew module, I get the following. Seems to be kinet2pcb....is fp_libs supposed to contain the full names of the Part footprints?

No errors or warnings found during netlist generation.

Traceback (most recent call last):
  File "/home/rayce/linux_bkp/pcb_experiment.py", line 69, in <module>
    generate_pcb()
  File "/usr/lib/python3.9/site-packages/skidl-1.1.0-py3.9.egg/skidl/circuit.py", line 607, in generate_pcb
    gen_func(file_)  # Generate the PCB file from the netlist.
  File "/usr/lib/python3.9/site-packages/skidl-1.1.0-py3.9.egg/skidl/tools/kicad.py", line 1014, in _gen_pcb_
    kinet2pcb.kinet2pcb(self, file_)
  File "/usr/lib/python3.9/site-packages/kinet2pcb-0.1.4-py3.9.egg/kinet2pcb/kinet2pcb.py", line 154, in kinet2pcb
    lib_uri = fp_libs[fp_lib]
KeyError: 'Resistor_SMD.pretty'
r4dr3fr4d commented 3 years ago

I'm wanting to try to keep the PCB design process in Python. I saw this exchange and thought generate_pcb() might be a way to create a pcbnew board object by running pcbnew.LoadBoard() on the .kicad_pcb. Is this sound, or is there another way I should be doing this?

devbisme commented 3 years ago

fp_libs is a dict that holds the full path to each file containing footprints. The key for each dictionary entry should be the nickname for the library file. I think the right key should be Resistor_SMD without the .pretty suffix.

The .kicad_pcb file output by generate_pcb should be acceptable to pcbnew.LoadBoard although I haven't tried it. I have been able to load it using PCBNEW.

I would be interested in hearing more about your efforts to do a Python-only PCB design. Maybe the forum is a better place for that.

r4dr3fr4d commented 3 years ago

Hmm, fp_libs (loaded from LibURIs()) seems to be an empty dictionary....I added a print to verify at line 135, right before the backtrace occurs. Could I be missing a package or something I wonder?

Yes, I'm already modelling a custom keyboard in just Python using cadquery and would like to extend that to the PCB design rather than learning a GUI, if possible. I'm a little surprised it's not a common workflow yet, maybe in the not-so-distant future?

I'm wanting to create a little single-switch PCB I can use many of, like this one - in fact, I'm trying to open that amoeba's .kicad_pcb file and just edit the dimensions to fit my 3d model.