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LTspice ASC Viewer

LTspice is one of the best schematic entry tools out there. It lets you draw any schematic imaginable. LTspice's simple appearance belies its true power.

  • You can draw graphs for computer science.

  • You can define buses.

  • You can nest schematics for complex hierarchies.

Now if only we could use these schematics in a Python GUI.

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AscCanvas

The AscCanvas class lets you import a schematic and show it as a wxPython window. It supports zooming, scrolling, searching and subclassing. It uses rtreelib to look up symbols and nets under the mouse pointer.

To show a schematic, you will need to import these files:

  • ASY files are symbols, i.e., components, and they are imported in batch by specifying a list of paths. Load them by calling AscCanvas.load_symbols()

  • ASC files are schematics. They define the connectivity between instances of symbols. Load them by calling AscCanvas.load_asc().

asc_viewer

asc_viewer is a demo executable that lets you open schematics and shows how to use AscCanvas.

Installation

pip install asc_viewer

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A viewer for LTspice ASC schematics in wxPython

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