kicad_bom_jlcpcb_auto

A KiCad BOM script for generating JLCPCB PCBA-compatible files with R and C part auto selection.

This KicCad BOM script is based on the following script: https://gist.github.com/arturo182/a8c4a4b96907cfccf616a1edb59d0389

The database of basic parts was extracted from this source: https://github.com/yaqwsx/jlcparts

Introduction

This BOM generator adds JLCPCB/LCSC part number auto selection functionality for basic SMT components. Currently it auto selects capacitors and resistors from the database of basic parts (no extra fees are charged when using those components during JLCPCB SMA). The default component database contains only basic parts, no extened parts are autoselected unless you manually add them to the lcsc_default_components.xml database.

The auto selection decision works like this (all following conditions must be met)

LCSC field must be empty (LCSC field is undefined in KiCad on that part)
part reference must match "C" for capacitors and "R" for resistors (case sensitive)
the package in lcsc_default_components.xml must match the footprint of the component
the value of the component (as defined in KiCad) must match value (or alternative values) as defined in lcsc_default_components.xml

In another words, the auto assignment will not work on parts:

that do have LCSC field already defined and filled in with a component reference
that are not Resitors or Capacitors (let's say Inductors or Diodes)
that have different package (for example 0201)
that have unmatched value (like XK, instead of 10k for example)

Tips:

If you want to check the full list of the default components, then take a look at the lcsc_default_components.xml file.
If you want to check the full list of basic parts there is a basic_parts.csv file in 'tools' subdirectory provided for your convenience.
You can update the contents of the lcsc_default_components.xml and basic_parts.csv files by using python3 tools located in 'tools' subdirectory.

Installation and usage

clone this repo locally to your computer
run KiCad Schematic editor
enter: Menu->Tools->Generate BOM...
near the bottom left corner of the dialogue press the small [+] button
navigate through filesystem and select kicad_bom_jlcpcb_auto.xsl file from the cloned git repository
when asked, give the new exporter a name or use the default one
the new exporter is added to the list, select it and click the [Generate] button to create the <project_name>.csv file with the BOM contents

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