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Auto generated missing DFN_QFN 3D models

KiCad Bot requested to merge github/fork/Misca1234/Auto_Create_DFN_QFN_01 into master

Created by: Misca1234

This push consist of 17 3D models for DFN_QFN foot prints.

A script FindMissingDFN_QFN3DModels.py that makes the comparison and creation of missing 3D models

The ordinary cq_parameters.py have been updated by a separate script and all 3D models can be recreated.

The script first find missing 3D models based on the parameter model in the foot print file. Then it extract the size and pitch from the foot print file name. After that it extract the description and the pads from within the foot print file and finally add entries to a separate file which should be merged with cq_parameters.py

It will assume some parameters such as the height and distance from pcb to body, the height is changed in 3 steps depending of how large the body is.

I guess we have to trust the models and change those which we discover later that are wrong. Can not expect to review all 17.

3D model push https://github.com/KiCad/kicad-packages3D/pull/455

3D model script push https://github.com/easyw/kicad-3d-models-in-freecad/pull/222

Here is a couple examples of the generated models

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Thanks for creating a pull request to contribute to the KiCad libraries! To speed up integration of your PR, please check the following items as you complete them:

  • A screenshot of the model(s) aligned with KiCad footprints is very useful
  • Was the 3D model(s) created in a mechanical modelling program?
  • Source files (or scripts) have been contributed
  • Step model submitted in 1:1 scale
  • WRL model submitted in 1:2.54 scale
  • 3D model alignment checked against KiCad footprint
  • WRL model uses correct material properties
  • Geometry check performed against mechanical models

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