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Overview

This command-line tool merges several board files produced by CadSoft Eagle CAD software into one, effectively reimplementing the panelize.ulp script included in the program itself, but without the board size limit in the light and freeware editions of the program.

The tool helps to perform panelization of one or several designs into a board larger than the board size limit. The output is a regular Eagle board file which can be easily inspected. Moreover, it's possible to perform various additional modifications, as Eagle only restricts component movement outside the board size limits. This is especially useful in cases when the production facility requires all panelized boards to be connected somehow, which is the case with most low-cost prototype PCB producers.

Operation

The tool copies the board data optionally rotating the board and adding a position offset to the coordinates. The included component data is correctly merged.

If several input files use the same component from the same library, the duplicates are removed. The user must ensure that the input files use up-to date libraries. If there is a mismatch between the definitions of the same component used in different files, the program aborts.

The tool may change signal or element names to ensure that resulting output file does not have signals or elements with duplicate names. This is required by Eagle. Whenever element name is changed, the tool ensures that the displayed label stays the same by introducing a custom attribute which is displayed instead of the name attribute.

All input files should use the same design rules. If there is a mismatch, the program aborts.

This tool does not support board files produced by Eagle versions earlier than 6.0. Most features of the newer board files are supported. The program aborts whenever unsupported feature is encountered.

Usage

merge.py output-file [in-file [--offx offset-x] [--offy offset-y] [--rotation rotation]]...
  • output-file: path to the output .brd file
  • in-file: path to an input .brd file
  • offset-x, offset-y: the position offset to apply to the particular input file. The suffix determines the units. The following suffixes are supported:
    • mm: millimeters
  • rotation: The counter-clockwise rotation in degrees to apply to the particular input file. The following values are supported: 0, 90, 180 and 270.

Requirements

python3 and lxml are required.

License

The tool is licensed under General Public License.

Copyright (C) 2016 Povilas Kanapickas [email protected]

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

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A tool to merge several Eagle board files

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