3D PCB Builder: Interactive Circuit Board Design and Visualization

Designing a printed circuit board (PCB) usually requires heavy software and a steep learning curve. This project introduces a lightweight, web-based 3D PCB Builder designed to make spatial planning and component placement intuitive. It allows makers and engineers to visualize the exact physical dimensions of electronic parts before building the actual hardware. https://procalclab.com/3d-pcb-builder-with-electronic-components/

A modern web browser (Chrome, Firefox, Safari, Edge) with WebGL support.

No additional software installation or registration is required.

No installation or extra software is required. Simply open the tool in any modern web browser that supports WebGL.

The interface is divided into a central 3D canvas and a surrounding control panel. When the page loads, a default test project appears so users can immediately see how parts and traces interact. The top buttons allow switching between two main working states: "Components" mode and "Traces" mode.

Every project starts with defining the physical constraints. Use the "Board Length" and "Board Width" sliders at the top of the screen to adjust the size of the green fiberglass base. The 3D model updates in real-time. This is crucial if the final circuit needs to fit inside a specific plastic enclosure or a tight space.

The builder includes a comprehensive library of standard electronic parts, including resistors, capacitors, transistors, ICs (DIP and QFP), LEDs, and batteries.

How to place parts:

1. Select a main category from the bottom grid.
2. Choose a specific sub-type (for example, a through-hole or SMD resistor).
3. Type a value into the "Part label / Value" box (e.g., "10K" or "RED"). This text is dynamically printed onto the 3D model.
4. Make sure "Components" mode is active, then click on the board to place the part. You can easily drag and drop the parts across the board to arrange them perfectly.

Once the parts are placed, switch to "Traces" mode to draw electrical connections. In this mode, the bulky 3D components disappear, leaving only flat, white footprint outlines. This provides a clear view for routing.

How to draw connections:

1. Click anywhere on the board to drop a starting copper node.
2. Click the next location to draw a straight copper line. The tool uses thick traces (0.4 width) suitable for standard DIY power applications.
3. The system automatically mirrors the traces, placing copper on both the top and bottom layers of the board simultaneously for a solid connection.
4. Double-click the mouse to finish a line and start a new, separate connection.

The biggest advantage of this tool is the spatial awareness it provides. Switch back to "Components" mode at any time to check the physical layout.

By rotating and zooming the camera, users can spot mechanical conflicts instantly. For instance, you can see if a tall electrolytic capacitor blocks access to a screw terminal, or if a battery pack overlaps with a microchip. This saves time and prevents costly mistakes before the board is ever manufactured.

Once the layout is complete, use the action buttons to manage the project data.

1. Save: Downloads a lightweight JSON file containing all board dimensions, part positions, custom labels, and trace routes.
2. Open: Loads a previously saved JSON file to instantly rebuild the 3D environment and continue working.
3. Photo: Takes a clean, high-resolution screenshot of the 3D canvas. This is perfect for sharing the concept with a team or adding illustrations to technical documentation.

Tool Link: https://procalclab.com/3d-pcb-builder-with-electronic-components/