The Easyduino repository gathers open‑source KiCad layouts for popular microcontroller devboards such as Arduino Uno, Nano, ESP32, ESP32‑S3, Raspberry Pi Pico and STM32 Bluepill. Each design mirrors the original board’s outline, pinout and component placement while adding modern touches like USB‑C connectors. All files are ready for JLCPCB production, using a four‑layer stackup. The files also include rendered images and BOM spreadsheets for quick reference.

The project arose from the need to reconcile disparate design tools—Eagle for the 2010 Arduino, Altium for the 2016 ESP32, and KiCad for the 2021 Pico—into a single, reproducible workflow. Contributors document any deviations from the commercial schematics, such as substituting the scarce Atmega16u2 USB‑serial chip, and provide Gerbers, BOMs and centroids for straightforward ordering. To avoid common fabrication issues.

Every board ships with a full KiCad project, a README explaining part choices, and a ProductionFiles folder containing PDFs, Gerbers and a JLCPB‑compatible centroid list. The repository is licensed under the CERN OHL‑v2 permissive licence, allowing commercial reuse without source disclosure. Community members submitted fixes for pin mismatches and updated libraries, improving reliability.