Connect and Conquer: Multiboard Design Adaptation in PCB Design Software

Krishna Sundaram
|  Created: June 8, 2018  |  Updated: February 26, 2025
Connect and Conquer Multiboard Design Adaptation in PCB Design Software

Innovation isn't just about creating a single, isolated printed circuit board (PCB) – it's about building entire ecosystems of interconnected boards that work together to bring devices to life. Whether you're designing a smart wearable, an advanced automotive system, or cutting-edge IoT gadgets, multi-board designs are revolutionizing how we build complex electronic systems. Let's explore this fascinating world together in a friendly, down-to-earth manner and see how modern PCB design software makes it easier.

What Is Multiboard Design?

Imagine you're working on a project that requires several PCBs, each handling a specific task, but all needing to communicate seamlessly. That's multi-board pcb design in a nutshell. You split the functions across multiple boards instead of having one big board trying to do everything. These boards connect through direct wiring or bus systems, creating a network that must be carefully orchestrated for electrical performance and physical alignment.

Back in the day, designing such systems was a headache. Every board was like its own mini-world, and keeping them in sync required much manual effort and endless revisions. Thankfully, modern design tools are here to help!

Why Multiboard Adaptation Matters

Multi-board adaptation is the process of designing, integrating, and optimizing multiple PCBs so that they function cohesively as a single system. Here's why it matters:

  • Collaboration Made Easy: Collaboration becomes crucial when multiple engineers are involved, each focusing on different boards. Modern PCB design software provides a unified platform where everyone can work together. Changes in one part of the system automatically reflect the whole design, reducing miscommunication and ensuring every piece fits perfectly.
  • Simplifying the Complex: Managing connections across several boards isn't as simple as drawing a few lines. Each connection has to account for signal integrity, power distribution, and even mechanical stress. Today's tools allow you to visualize and manage these interconnections effortlessly. Think of it as having a detailed roadmap for your electronics project, where every junction is marked and validated.
  • Maintaining Signal Integrity: One lousy connection can lead to a cascade of issues in a multi-board system – from poor signal quality to complete system failure. Advanced software comes equipped with signal integrity analysis, ensuring that every connection is optimized. This means fewer late nights spent troubleshooting and more time focused on innovation.
  • Physical and Mechanical Harmony: It's not just about the electrical connections – how the boards fit together physically is just as important. Whether your design goes into a sleek smartphone or a rugged industrial machine, ensuring that the boards and their interconnections (like cable harnesses) are correctly positioned is key. Integrated 3D design views in PCB software help you see the big picture – literally – so you can iron out any mechanical conflicts before production.

The Role of Cable Harnesses

With multiple boards working together, a well-planned interconnection strategy is essential. That's where cable harnesses come in – a critical, yet sometimes overlooked, component in multi-board PCB designs. Think of cable harnesses as the circulatory system of your electronic device. They carry signals, power, and data between boards, ensuring that every part of your system communicates effectively. Without them, even the most carefully designed PCBs wouldn't function as a cohesive unit. Here are just a few points why they play such a significant role:

  • Reliable Connectivity: Cable harnesses ensure that all your PCBs are connected in a stable and reliable way. Without them, even the best-designed boards would struggle to communicate.
  • Preserving Signal Quality: In the hustle of a multi-board system, poor wiring can lead to interference, signal loss, and unexpected glitches. A well-designed harness prevents these issues, keeping everything running smoothly.
  • Mechanical Integration: Beyond the electrical aspects, harnesses must also be designed to fit within the physical confines of your device. This involves careful planning to avoid space issues and minimize connector and cable strain.
  • Ease of Maintenance: A neat and well-organized harness isn't just for show – it makes repairs and troubleshooting much easier. Labeling and organizing the cables can save hours when something goes wrong.

Modern PCB design tools, while primarily focused on board layout, help plan for these harnesses by allowing you to simulate cable routing, multi-board connector placement, and space constraints. This ensures that your cable harness works perfectly with the rest of your design.

Key Features of Modern PCB Design Software

Modern PCB design software should do more than just allow you to draw circuits. It should provide a comprehensive platform that supports every aspect of multi-board systems. Here’s what you should expect:

  • Board-to-Board Connectivity Tools: Visualize and manage how each board connects. These tools allow you to plan interconnections clearly, reducing manual errors.
  • Integrated 3D Design Views: View your design in 3D to get a real-world feel. This feature helps you understand how all your boards, connectors, and cable harnesses fit together in the final product.
  • Advanced Signal Integrity Analysis: Automated checks and simulations ensure that every signal path is optimized, reducing the risk of errors.
  • Comprehensive Design Rule Checks (DRCs): These automated rules help catch mistakes early in the design process, ensuring consistency across all boards.
  • Collaborative Tools and Version Control: Work seamlessly with your team. Changes are tracked and updated across the entire system, keeping everyone on the same page.
  • Cable Harness Design Support: Plan and integrate your cable harness design within the PCB design environment. This integration means you're thinking about every electrical and mechanical connection from day one.

Looking Ahead: Adapting for the Future

As technology evolves, so do the challenges in PCB design. The push towards smaller, faster, and more energy-efficient devices means multi-board systems will become even more complex. Future innovations like flexible electronics and wireless technology advancements will demand even more innovative design tools.

The great news is that the industry is always one step ahead. Designers and engineers continuously refine their software tools to meet these new challenges, ensuring that every multi-board system is as efficient, reliable, and innovative as possible.

Conclusion

Mastering multi-board design might seem daunting, but with the right tools and a clear understanding of every component – down to the cable harness – the journey becomes much more manageable. Modern PCB design software goes beyond creating circuits; it builds a cohesive ecosystem where every board, every connection, and every cable works in perfect harmony.

No matter how small, every element plays a vital role in the bigger picture. With collaboration, careful planning, and the latest design tools at your fingertips, you're well-equipped to connect and conquer any challenge that comes your way.

Interested in exploring multi-board design? Find the easiest way to create complex designs and error-free system interconnections.

About Author

About Author

Krishna Sundaram joined Altium as a Senior Product Manager, leading the company's product design area, which includes Multiboard and Harness solutions. With over 11 years of experience in product development within the ECAD industry, Krishna has built his career specialising in the cable and wire harness domain.

He has played a pivotal role in developing innovative software solutions for wire harness design, streamlining workflows, and enhancing engineer productivity. His expertise spans the entire lifecycle of wire harness development—from conceptual design to manufacturing optimisation—ensuring end-to-end efficiency and precision.

Krishna’s in-depth understanding of the complexities wire harness engineers face has driven him to create tools that integrate seamlessly with ECAD ecosystems, bridging the gaps between electrical and mechanical design. His forward-thinking approach has been instrumental in reducing design times and improving collaboration across teams.

A Master's degree in Electrical Power from Newcastle University gives Krishna a solid foundation in electrical systems, which he leverages to pioneer advancements in wire harness technology. Driven by a passion for empowering engineers, Krishna continues to shape the future of harness design through innovative and impactful solutions.

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