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2 layersUsage, the printed circuit board in 3D

First-party packages 📦 from atopile

Copper layers
2
Thickness
1.6 mm
Parts
12
Nets
7
Pads
28
Tracks, vias
46, 10
Pours
1
Routed
Yes
KiCad
KiCad 0.15.0-post1.dev3+gf835bf9d8.d20260406164512 (file 20241229)
Created
7 Apr 2025
Updated
29 Apr 2026

Overview

Usage is an open-source printed circuit board by atopile, from the atopile/packages repository on GitHub, published under the MIT licence. It is a 2-layer board with 12 parts on 7 nets, routed with 46 tracks and 10 vias.

Its parts include 7 capacitors, 2 resistors, 1 IC, 1 diode and 1 inductor.

README

README.md

First-party packages 📦 from atopile

This is a monorepo for all the loose packages published by atopile.

Project-specific packages are published from their own repos.

Development

Conventions

Package name restrictions:

  • kebab-case

  • starts with a letter

  • "[a-z][0-9-]+"

  • project directories MUST have the same name as the package

  • drivers for ICs SHOULD be in the format "-x?". eg ti-bq240x

    • there should be a single "x" on the end if there are multiple variants of the same part family
    • the manufacturer stub should be omitted if the they already do this for ths
  • modules and files should be named like "x?"

    • "x" is optional if there is only one variant of the part family
    • omit the manufacturer stub from the filename
  • components should be named like ""

  • build names should be:

    • "ref-" for reference designs
    • "test-" for test builds
    • "example-" for example builds
    • if only one IC/set of builds exist in a package, the name can be omitted

Contributing

We welcome contributions! Here's how you can help:

  1. Fork the repository
  2. Create a new branch for your changes
    bash
    git checkout -b feature/your-feature-name
  3. Make your changes
  4. Install and run pre-commit hooks to ensure code quality
    bash
    pre-commit install
    pre-commit run --all-files
  5. Commit your changes with clear, descriptive commit messages
  6. Push to your fork
  7. Open a Pull Request with a clear description of your changes

Please ensure your PR:

  • Follows the package naming conventions above
  • Includes appropriate tests if adding new functionality
  • Has all pre-commit checks passing
  • Has a clear description of the changes

Building Packages

To build all packages in the repository, use the build-all.sh script:

bash
# Build all packages
./build-all.sh

# Build all packages with specific flags (e.g., --frozen)
./build-all.sh --frozen

The script will attempt to build each package and provide a summary report of successes and failures.

Parts

12
QtyValueFootprintReferences
510µF ±10%Samsung_Electro_Mechanics_CL31A106KBHNNNE:C1206C3, C4, C5, C6, C7
1Guangdong_Hottech_1N5819WS:SOD-323_L1.8-W1.3-LS2.5-RDD1
1Texas_Instruments_LV2842XLVDDCR:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BRU1
1102kΩ ±1%FOJAN_FRC0402F1023TS:R0402R1
130.9kΩ ±1%FOJAN_FRC0402F3092TS:R0402R2
14.7µF ±10%Murata_Electronics_GRM31CC72A475KE11L:C1206C2
1470nF ±10%Samsung_Electro_Mechanics_CL05A474KP5NNNC:C0402C1
1L 22µH ±20%cjiang_FNR5040S220MT:IND-SMD_L5.0-W5.0_H4.0L1

Questions

What parts does the Usage use?

12 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Usage KiCad files?

From the atopile/packages repository on GitHub, at the commit this page was made from: the board is packages/ti-lv2842x/layouts/usage/usage.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Usage design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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