Open-Source KiCad PCBs for Common Arduino, ESP32, RP2040 Boards
The 'Easyduino' project provides a unified repository of open-source KiCad PCB designs for popular microcontrollers like Arduino, ESP32, and Raspberry Pi Pico, addressing the fragmentation of existing development board ecosystems. It aims to standardize designs, incorporate modern features like USB-C, and make high-quality hardware schematics accessible to the community. This initiative appeals to hardware developers and hobbyists seeking consistent, well-documented base designs for their projects.
The Lowdown
Easyduino is a new open-source initiative that compiles KiCad PCB designs for widely used microcontroller development boards. Born from the need to standardize the varied software, languages, and conventions across different popular boards, the project provides a consistent framework for hardware development using free and open-source tools.
- Unification Goal: The project unifies PCB designs for microcontrollers such as Arduino Uno, Nano, ESP32, ESP32 S3, Raspberry Pi Pico, and STM32 Bluepill under a single, open-source umbrella. It also notably integrates modern features like USB-C support.
- KiCad Focus: All designs are created using KiCad, adhering to best practices within the PCB and KiCad ecosystems, and are compatible with KiCad v8.0.0 and v10.
- Design Details: Boards aim to replicate the original outlines, pinouts, layouts, and components, with detailed explanations for any deviations due to cost or availability. All designs utilize 4-layer copper PCBs to simplify wiring, based on JLCPCB's JLC04161H-7628 stackup.
- Comprehensive Project Structure: Each board's directory includes main KiCad files, a detailed readme, custom component libraries (if needed), and an 'Outputs' folder containing all production-ready files such as Gerbers, Bill of Materials (BOMs), PDFs of schematics and PCBs, component placement lists (CPLs), datasheets, and photos/renders.
- Accessibility and Usage: Users can easily access and use the designs by installing KiCad and cloning the GitHub repository. Production files are also directly available within each project's 'ProductionFiles' folder.
- Licensing: The project is distributed under the CERN Open Hardware Licence Version 2 - Permissive, allowing free use and modification for both personal and commercial purposes, provided the license is included.
By offering high-quality, standardized, and open-source PCB designs, Easyduino simplifies the starting point for embedded systems development, promoting interoperability and reducing the learning curve for new and experienced hardware designers alike.