Rp2040

RP2040 DevKit

A custom development board built around the Raspberry Pi RP2040 microcontroller.

This project is a personal PCB design exercise based on the official RP2040 hardware-design reference material. The goal was to translate the reference design into a complete, organized KiCad project and develop a practical DevKit-style board around the RP2040.

Project status: PCB design / hardware development

Overview

The board was designed from the RP2040 reference design with attention to the complete hardware implementation rather than treating the microcontroller as a standalone component. The repository contains the KiCad schematic and PCB layout, supporting component data, manufacturing-related outputs, and visualizations of the finished board.

The design includes the supporting circuitry required around the RP2040, including its clocking and other core hardware, while keeping the board in a compact development-kit form suitable for experimentation and further firmware development.

Design Files

The main hardware design is provided as a KiCad project:

• RS/RS.kicad_sch — Schematic
• RS/RS.kicad_pcb — PCB layout
• RS/RS.kicad_pro — KiCad project file
• RS/RS.pdf — Schematic/documentation export
• RS/bom/ — Bill of Materials and related outputs
• RS/hi.pretty/ — Custom KiCad footprints used by the project
• 3D/ — Additional 3D component model files
• ref/ — Reference material used during the design process

PCB Layer Stack

The following renders show the PCB layer-by-layer, followed by a combined view of the complete board stack.

Layer 1 — Top Layer

The first layer of the PCB, showing the routing and copper features placed on the top side of the board.

Layer 2 — Inner Layer

The second PCB layer, showing the corresponding internal copper features and routing.

Layer 3 — Inner Layer

The third layer of the four-layer PCB stack, providing additional routing and copper area within the board.

Layer 4 — Bottom Layer

The final layer of the PCB stack, showing the copper features on the bottom side of the board.

Complete Layer Stack

All four PCB layers displayed together to give an overall view of the board's routing density and layer organization.

3D PCB Views

The following renders show the completed PCB from different perspectives. They provide a more intuitive view of the board outline, component placement, connectors, and overall physical arrangement.

3D View — Front Perspective

A perspective view of the assembled PCB, highlighting the component placement and overall board geometry.

3D View — Alternate Perspective

A second perspective of the board showing the physical arrangement from a different angle.

3D View — Final Overview

A final 3D overview of the DevKit, showing the complete board design as a physical assembly.

Design Process

The board was developed by studying the RP2040 hardware reference design and adapting its requirements into a custom PCB workflow:

1. Reference study — Understanding the RP2040's required supporting circuitry and hardware constraints.
2. Schematic design — Recreating and organizing the required circuitry in KiCad.
3. Component and footprint selection — Selecting appropriate packages and creating or integrating required footprints and 3D models.
4. PCB layout — Arranging the circuitry and routing the board across the four-layer stackup.
5. Design review — Inspecting the individual PCB layers and the complete layout.
6. 3D verification — Using KiCad's 3D representation to check the physical arrangement and board geometry.

Reference

The design was developed with the RP2040 hardware design documentation as a primary reference. The relevant reference material is included in the ref/ directory for reproducibility and study.

Tools

• KiCad 10 — Schematic capture, PCB layout, and 3D inspection
• RP2040 — Main microcontroller
• Git / GitHub — Version control and project documentation

Notes

This repository represents a custom hardware implementation and learning project. It is based on the RP2040 reference design, but the PCB, schematic organization, component selection, and physical layout were developed as part of this project.

The design should be reviewed and electrically validated before being used as a production board.

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Designed by Islam Tarek Moawad