Do you have a great idea for an electronic device and are considering seeking funding? Before you start looking for investors, think about building a prototype. In this article, we explain what a proof of concept is and how a working prototype can lend credibility to your project in the eyes of investors, increasing your chances of success in funding discussions.
Prototype as proof of concept
Proof of concept is the first confirmation that our idea for a device is viable and can work in practice. We are referring to a prototype, which is an early version of the device that should be as close as possible to the target design, both in terms of electronics and the anticipated operating environment. At this stage, it is already worth considering aspects such as miniaturization, ultra-low power consumption, and how the device will be integrated into the final product. An important part of this process is the assembly of electronic circuits, which allows you to check the placement of components on the board and the correctness of their connections. Thanks to this, the prototype provides an opportunity to reliably verify whether the adopted technical concept actually works in practice.
The next or an additional step is to create a works-like, looks-like (WLLL) prototype, a version that closely resembles the final product in both appearance and operation. At this stage, the industrial designer works on the device enclosure design in line with the design brief and technical requirements. This includes the layout of electronics and user interface components to ensure the product is functionally and ergonomically consistent. The designed enclosure is manufactured using rapid prototyping methods, such as 3D printing. This approach helps save time and reduce costs, since after initial testing and real-world verification, further improvements may be needed, such as refining the ergonomics, functionality, or appearance.
The benefits of having a prototype before investment
Credibility in the eyes of investors. Many enthusiasts present visions of devices that could change the world. However, investors may be cautious about ideas without proof. A working prototype signals that the idea is backed by real action, and that the team has gone beyond words. With a prototype, we can say: “Look, this is no longer just theory. We have a device that performs a function and solves a real problem.”
A working prototype reduces investment risk. It shows that certain technical risks have already been addressed, for example, the sensors used are known to work well enough, or wireless communication is possible over the required distance. This is also an advantage over the competition, which often stops at the level of slide presentations and future visions.
A prototype allows you to collect early feedback, not only from investors, but also from potential customers and industry experts. Their input can be used to improve the design even before the mass production phase of the electronic device.
Creating a prototype is an opportunity for initial market testing. Limited deployments, called beta versions, help verify how users actually interact with the device and what they think of it. These data show the level of real engagement and provide market validation signals that investors treat as a strong argument when making funding decisions.
Having a prototype also often speeds up work on the business plan and valuation. With concrete data on the device’s performance, such as battery life, component cost, or technical efficiency, it is easier to prepare accurate cost and financial need forecasts.Moreover, the prototype can be used to create marketing materials, photos, or videos of the device in action that will enhance the pitch deck during investor meetings.
How investors view prototypes
Not all investors engage at the same stage of a startup’s development.
- Business angels – are often willing to invest at a very early stage, sometimes based solely on the idea and the team. However, even they are more likely to make a decision when they can see a working prototype that demonstrates the feasibility of the idea.
- Venture capital (VC) – funds usually expect a startup to move beyond just the concept. They want to see not only a proof of concept, but also early signs of product-market fit or clear progress in that direction. In practice, this includes a prototype, initial market testing, user feedback, or beta data.
- Industry investors (corporate venture, strategic) – are usually interested in projects that already have validated technology and are beginning to acquire users. For them, a works-like/looks-like prototype is the absolute minimum, and ideally, the product has already undergone initial pilot deployments.
A prototype helps avoid costly mistakes
Early prototyping allows you to catch many errors and technological challenges before entering the production phase. It may turn out that certain assumptions were incorrect, for example, the selected sensor is not accurate enough under real conditions, the housing must be reshaped to fit all components, or wireless communication interferes with another part of the system. At this stage, electronic circuit programming and hardware compatibility are also verified. It is better to discover such issues during the prototyping stage rather than after spending hundreds of thousands on manufacturing a faulty product series. By addressing these problems early, we increase the chances that once we have secured an investor and funding, the final product will be delivered on time and as expected.
Give shape to your idea
Although building a prototype before speaking with investors is not always a formal requirement, in practice it often becomes a decisive factor for success. It helps build trust, gather real feedback, and avoid costly errors. It also accelerates the development of the idea toward a ready-to-launch product. At Device Prototype, we help turn concepts into working solutions. Whether you need a simple proof of concept, a fully functional prototype, or a version close to the final product, we will support you throughout the entire process of electronic device design and manufacturing. Contact us.
