Investors and grant bodies keep asking startups the same question in different words: how far is this from working in the real world? Technology Readiness Levels are the shorthand for that answer. Place your technology accurately on the scale and you'll waste much less time pitching the wrong money to the wrong people.

TRLs came out of NASA in the 1970s and now sit at the centre of how Innovate UK, the European Commission, and most deep tech investors talk about maturity. There are nine levels, running from an idea on paper to a product that's been proven in service.

Software-heavy businesses often move through the middle levels in weeks rather than years, which is why a pure SaaS company rarely talks in TRL language at all. A fusion reactor or a new battery chemistry might spend a decade between TRL 4 and TRL 7. The scale matters most when the science risk is real and expensive to retire.

There's no perfect mapping, and anyone who tells you TRL 6 always equals a Series A is selling something. But the rough correspondence is useful because it tells you what a funder expects to see for their money.

The point of the table is the direction of travel, not the exact boundaries. What you're really doing at each round is buying yourself the next level of proof.

Which investors care at which level, and why it depends on your business

The type of investor interested in you at TRL 4 depends heavily on what you're building.

If you're a deep tech or hardware company, TRLs 1 to 4 are mostly grant and angel territory. Very few institutional VCs will write a cheque when the core technology still might not work, because the science risk is too high and the timelines are too long for a standard ten-year fund. The investors who do engage early tend to be specialists: funds like IQ Capital, Amadeus, or Octopus Ventures in the UK, university venture arms, and angel syndicates with a technical background who understand what they're looking at. Deep tech seed funds increasingly bridge TRL 4 to 6, betting that lab validation will translate to a relevant environment.

If you're a software company, the whole frame shifts. A generalist seed VC cares far less about where your technology sits on a readiness scale and far more about early users, retention, and whether people will pay. The TRL model was built for physical systems, so a B2B SaaS founder pitching "TRL 5" to a generalist fund will usually get a confused look. Save that language for grant applications and for investors who specialise in hard technology.

For biotech and therapeutics, readiness maps onto clinical phases and regulatory milestones more than TRLs, and the investor base is specialised from day one. For climate and energy hardware, expect a mix of grant funding, specialist climate funds, and eventually corporate and infrastructure money once you're demonstrating at TRL 7 and above, because those investors want to see the thing running before they commit real capital.

The general rule holds across all of them: the earlier and more technical the risk, the more you'll lean on grants and specialists, and the later and more commercial the risk, the more generalist and growth-focused the money becomes.

UK grant funding, and where it fits on the scale

Grants are the natural fit for the lower TRLs precisely because that's where private capital is most reluctant. Non-dilutive money that pays for de-risking science is a strong deal for a founder, so it's worth knowing the main UK routes.

Innovate UK is the anchor. Its Smart Grants competitions fund novel, high-impact innovation across any sector, typically awarding somewhere in the tens of thousands up to around £500,000, and they expect your project to be past pure research with a credible route to market. That maps roughly to TRL 3 through 7 depending on the competition. Innovate UK runs these on a rolling basis, so check the Innovation Funding Service for what's currently open, since the specific competitions change through the year.

Earlier than that, ICURe helps researchers test whether there's a market for lab-stage technology, which suits TRL 2 to 4. Innovate UK also offers Innovation Loans for later-stage projects that are closer to commercialisation but still too risky for a bank, useful around TRL 6 to 8.

Beyond Innovate UK, the British Business Bank underpins a lot of the ecosystem through programmes like the Enterprise Capital Funds and the Regional Angels Programme, though it mostly channels money via other funds rather than to you directly. Sector and regional grants exist through the Catapult network and local growth bodies, and if you're a university spinout, your institution's tech transfer office and proof-of-concept funds are often the fastest early money.

Two things founders routinely underuse. First, R&D tax relief, which isn't a grant but refunds a chunk of qualifying development spend and effectively extends your runway at every TRL. Second, the tax-advantaged investment schemes: SEIS and EIS don't pay you, they make you more attractive to angels by giving them generous income tax relief for backing early, risky companies. SEIS is aimed at very young companies, letting one raise a capped amount in its first years, and EIS covers larger raises after that. The exact limits move with each Budget, so confirm the current figures with HMRC or your accountant before you build them into a pitch. For most early-stage UK founders, having SEIS or EIS advance assurance in hand makes an angel conversation much easier.

Work out where you sit, then match the money to the level. Grants and angels for the early, science-heavy work. Seed and Series A capital once you've got a prototype proving itself in something like the real world. Generalist VCs when the risk you're retiring is commercial rather than technical.

The most common mistake isn't picking the wrong TRL. It's pitching a TRL 3 company to investors who only fund TRL 7, then concluding the market doesn't get it. It does. You're just knocking on the wrong door.

TRLs and Funding: Your Guide to Paying for Innovation

TRL Funding Guide

Fiddlie's Technological Prowess Behind Orasonic: Revolutionizing Canine Oral Care

At Fiddlie, we're driven by a passion for developing cutting-edge solutions that improve the well-being of both humans and animals. We're proud to have played a pivotal role in the development of Orasonic, a revolutionary new pet toothbrush that's poised to redefine the way dog owners approach their furry friend's oral health.

Orasonic is the culmination of a huge amount of intensive research and development, a testament to Fiddlie’s expertise in ultrasonic, subsonic, IR, and UV emission technologies along with the dental knowledge of 

. We've channeled our deep understanding of the challenges dog owners face in maintaining their pet's dental hygiene into the creation of this innovative device.

We understand firsthand the struggles of brushing your dog's teeth. It can be a messy, time-consuming ordeal, often met with resistance from our four-legged companions. Traditional toothbrushes and pastes can be harsh on your dog's delicate gums, and concerns about the potential harm of harsh chemicals are understandable. Furthermore, achieving a truly thorough clean with conventional methods can be difficult, leaving those hard-to-reach areas susceptible to plaque and tartar buildup.

Fiddlie's Contribution: Orasonic's Technological Edge

Orasonic addresses these challenges through a multi-pronged approach, seamlessly integrating advanced technology with unparalleled convenience and customization. Fiddlie's engineers and scientists worked tirelessly to develop and refine the core technologies that make Orasonic a game-changer in canine oral care.

Orasonic exemplifies Fiddlie's unwavering dedication to developing innovative solutions that improve the lives of both humans and animals. By partnering with industry leaders in pet care such as Petdentist’s Deepak Songra, we've been able to bring this groundbreaking technology to the market, making a significant difference in the lives of dogs and their devoted owners.

We invite you to explore Orasonic further and discover how Fiddlie's technological prowess has contributed to this revolutionary advancement in canine oral care.

Revolutionizing Canine Oral Care

Are you a final-year student or recent graduate with a passion for innovation and technology? This summer, Fiddlie is opening its doors to talented individuals ready to make an impact in the fast-paced world of tech development. If you’re pursuing a bachelor’s, master’s, or PhD and are looking for hands-on experience, our internship programme is your chance to take your skills to the next level.

At Fiddlie, we specialise in providing development solutions for tech startups, blending creativity with technical expertise to bring groundbreaking ideas to life. As an intern, you’ll work on real-world projects, side by side with experienced professionals in our vibrant London lab and office. Whether you’re designing prototypes, coding cutting-edge software, or exploring new possibilities in product design, you’ll gain invaluable industry experience that will set you apart.

Our internships are tailored for those with excellent English communication skills who thrive in a collaborative, in-person environment. We’re seeking curious minds who are ready to roll up their sleeves and contribute to exciting projects across software development, electronic engineering, and product design. All roles are based in our London office, so you’ll be part of the action every day, working in a space where innovation happens.

Please note that we do not issue work visas for internships, but we do support visa sponsorship for full-time positions. If you’re looking to join us long-term, this is just the beginning of what could be an incredible journey with Fiddlie.

Internship opportunities are available for Spring, Summer, and Autumn 2025, with applications open now. If you’re ready to take the first step towards an exciting career in the tech industry, we want to hear from you. Send your CV and a cover letter to 

 and tell us why you’re the perfect fit for Fiddlie (make sure to include the specific position).

An internship at Fiddlie isn’t just about gaining experience; it’s about making a meaningful contribution to cutting-edge projects while preparing yourself for a successful career. Join us this summer and be part of something extraordinary.

Don’t miss out—apply today and share this post with friends and colleagues who might be interested. We can’t wait to welcome you to Fiddlie!

Kickstart Your Career with Fiddlie: Summer 2025 Internship Opportunities

Summer 2025 Internships

As a new founder with a brilliant product idea, you might be wondering how to take the next step towards making it a reality. Artificial Intelligence (AI) offers exciting possibilities to help refine and develop your concept, even if you're working with limited resources.

We regularly hear from people who have used AI in their designs, and while AI can create amazing visualizations, with the right approach and planning, those designs can be brought to life.

This guide will walk you through how to use free or low-cost AI tools to evolve your idea before partnering with a prototyping firm to bring it to life.

For new founders, AI might sound complex, but many user-friendly tools make it accessible even without technical expertise. In the context of early-stage product development, AI can help with:

By leveraging these AI capabilities, you can add depth and clarity to your product concept, making it more compelling when you're ready to approach a prototyping firm.

Step 1: Using AI for Market Research and Idea Validation

Before diving deep into development, it's crucial to understand your market and validate your idea. Here are some AI-powered tools to help:

When using Claude, ChatGPT, or Gemini, try these prompts to assist with market research:

These prompts can help you gather initial insights and identify areas for further research using the tools mentioned earlier.

Step 2: AI-Assisted Concept Development and Design Visualization

Once you've validated your idea, AI can help refine your concept and even create basic visualisations:

AI Assistant Prompts for Concept Development

Use these prompts with AI assistants to refine your product concept:

These prompts can help you explore different aspects of your product concept before using visualization tools.

Step 3: AI for User Need Identification and Feature Prioritisation

Understanding user needs and prioritizing features is crucial. Here are some AI tools to assist:

AI Assistant Prompts for User Needs and Features

Leverage AI assistants with these prompts to delve into user needs and feature prioritisation:

These prompts can provide valuable insights to complement the data from other AI tools mentioned earlier.

Step 4: Preparing to Work with a Prototyping Firm

As you refine your product idea using these AI tools, you're building a stronger foundation for collaboration with a prototyping firm. Here's how to leverage your AI-assisted work:

AI Assistant Prompts for Prototype Preparation

Use these prompts to help prepare for discussions with a prototyping firm:

These prompts can help you organise your thoughts and prepare comprehensive information for your initial discussions with a prototyping firm.

Conclusion: From AI-Enhanced Idea to Prototype Reality

By combining the insights from free AI tools, the creative exploration possible with AI assistants like Claude, ChatGPT, or Gemini, and your own innovative thinking, you've significantly developed your initial product idea. This comprehensive approach puts you in an excellent position to collaborate with a prototyping firm.

When you're ready to transform your AI-enhanced product concept into a physical reality, a firm like Fiddlie can provide the expertise needed. They can:

Remember, the AI tools and assistants you've used are meant to enhance your creative process, not replace your unique vision. They've helped you explore possibilities, gather insights, and structure your thoughts. Now, combined with the professional capabilities of a prototyping firm, you're well-equipped to bring your product idea to life.

Your journey from concept to product is an exciting one. Embrace these AI tools as valuable assistants in your process, and look forward to the moment when you can hold a physical prototype of your innovation, shaped by AI insights, your creativity, and expert prototyping!

How to Use AI to Develop Your Product Idea: A Guide for New Founders

Using AI to Develop Your Product Idea

As a startup founder with a brilliant product idea, you're standing at the threshold of an exhilarating journey. The path from concept to market-ready product is paved with challenges, triumphs, and invaluable learning experiences. Today, we're embarking on an in-depth exploration of the product prototyping process – a crucial phase that will transform your vision into tangible reality.

In this comprehensive guide, we'll navigate through each stage of the prototyping journey, from the initial looks-like/works-like phase, through Engineering Validation Testing (EVT), Design Validation Testing (DVT), and finally to Production Validation Testing (PVT). By the end of this article, you'll have a robust roadmap to guide your product development process, equipping you with the knowledge to turn your lightbulb moments into market-disrupting innovations.

The Crucial Role of Prototyping in Product Development

Before we dive into the specific stages, it's essential to understand why prototyping is the backbone of successful product development. Prototyping isn't just about creating a physical representation of your idea; it's a strategic process that can make or break your product's success.

First and foremost, prototyping is your best defense against risk. In the world of startups, where resources are often limited and time is of the essence, you can't afford to invest heavily in a product that may not work or resonate with your target market. By creating prototypes, you're essentially testing the waters. You're identifying potential issues, technical challenges, and user experience problems early in the development process, when changes are less costly and easier to implement.

Consider the cautionary tale of Juicero, a startup that raised over $120 million to develop a high-tech juicer. The company spent years perfecting their product before launch, only to discover that users could squeeze the juice packs by hand just as effectively as the $400 machine. Earlier and more extensive prototyping and user testing might have revealed this fatal flaw, saving millions in development costs and preventing a very public failure.

Prototyping also serves as a powerful tool for securing funding. Investors are inundated with pitches and ideas daily, but a well-crafted prototype can set you apart from the crowd. It demonstrates that you've moved beyond the idea stage and have a concrete proof of concept. When Dropbox was still in its infancy, founder Drew Houston created a simple video demonstrating a prototype of the file-sharing service. This three-minute video generated immense interest from potential users and investors alike, playing a crucial role in the company's early success.

Furthermore, prototypes are invaluable for gathering user feedback. While you may have a clear vision of your product, your target users might interact with it in unexpected ways or have needs you hadn't anticipated. By putting prototypes in the hands of potential customers, you gain insights that can refine and improve your product. This user-centric approach has been a cornerstone of success for companies like Apple, known for its extensive prototyping and testing processes.

Lastly, prototypes can be essential in the patent process. In many jurisdictions, a working prototype can strengthen your patent application, providing a concrete demonstration of your invention's functionality. This can be crucial in establishing the novelty and non-obviousness of your product, key criteria in patent approval.

With these benefits in mind, let's embark on our journey through the prototyping process, starting with the looks-like/works-like stage.

The Looks-Like/Works-Like Stage: Bringing Form and Function Together

The looks-like/works-like stage is where your product idea begins to take tangible shape. This phase is all about exploring and validating both the aesthetic and functional aspects of your product, often through separate but parallel processes.

The "Looks-Like" Prototype: Crafting the Face of Your Product

The "looks-like" prototype is your product's first impression on the world. It's a visual and tactile representation that focuses on the aesthetic and ergonomic aspects of your design. Think of it as your product's Hollywood headshot – it needs to capture attention and communicate the essence of your vision.

Creating a looks-like prototype involves a range of techniques and technologies. You might start with simple sketches or 3D renderings to explore different design concepts. As you refine your ideas, you'll likely move on to more sophisticated methods like 3D printing, CNC machining, or even hand-crafted models.

The key here is to create a physical object that people can see, touch, and interact with. This prototype doesn't need to have any working internal components – its job is purely to communicate the physical design, size, and user interface of your product.

Let's consider a real-world example. When Beats by Dre was developing their iconic headphones, they spent considerable time perfecting the looks-like prototype. The distinctive design, with its bold curves and prominent logo, was a crucial part of the product's appeal. The team created numerous physical models, tweaking everything from the headband's arc to the size of the ear cups, long before they finalized the internal audio components.

When crafting your looks-like prototype, pay close attention to ergonomics and user comfort. If you're developing a handheld device, for instance, how does it feel when held for extended periods? Are buttons and controls easily accessible? These are questions that a looks-like prototype can help you answer.

Material selection is another crucial consideration at this stage. While your prototype might not be made from the final production materials, you should be thinking ahead to what those materials might be. Consider factors like durability, weight, texture, and even the emotional response different materials might evoke in users.

Remember, the looks-like prototype is also an opportunity to align your product's appearance with your brand identity. Colors, finishes, and overall aesthetic should all reflect the image you want to project to your target market.

The "Works-Like" Prototype: Breathing Life into Your Idea

While the looks-like prototype is all about external appeal, the works-like prototype is where the magic happens inside. This version of your prototype might not win any beauty contests, but its job is to prove that your product can actually do what you claim it can do.

Creating a works-like prototype often involves a fair bit of creative problem-solving and "MacGyvering." You're not aiming for a polished, final product here – you're building a proof of concept. This might mean cobbling together off-the-shelf components, using development boards like Arduino or Raspberry Pi, and writing rough code to demonstrate core functionality.

Let's say you're developing a smart home device that monitors air quality and adjusts your HVAC system accordingly. Your works-like prototype might consist of a basic air quality sensor connected to a microcontroller, with a simple display showing readings. It might be a mess of wires and circuit boards hot-glued together, but if it can accurately detect air quality changes and send signals to adjust ventilation, it's doing its job.

The works-like stage is where you'll encounter and solve many of the technical challenges in your product. You might discover that your chosen sensor isn't accurate enough, or that your algorithm needs tweaking to respond quickly to changes. These are exactly the kinds of insights you want to gain at this stage, before you've invested in expensive tooling or large-scale production.

Power consumption is another critical factor to consider in your works-like prototype, especially for battery-powered devices. Your prototype might be running off a large battery pack or even plugged into the wall, but it should give you a realistic idea of how much power your product will consume in real-world use.

Merging Looks-Like and Works-Like: The Path to a Unified Prototype

As you progress through the prototyping process, your goal should be to gradually merge your looks-like and works-like prototypes. This convergence is where your product really starts to take shape as a cohesive whole.

The process of combining aesthetics and functionality often involves a series of compromises and creative solutions. You might find that the sleek design you envisioned doesn't leave enough room for all the necessary components, or that the perfect material for the outer casing interferes with your wireless signals.

Take the example of the first-generation iPhone. Apple's development process involved creating numerous prototypes that progressively combined looks-like and works-like elements. Early prototypes were much thicker than the final product, as the team worked to squeeze the necessary components into the slim form factor that Steve Jobs demanded. This process involved countless iterations, with the industrial design and engineering teams working closely together to solve challenges as they arose.

As you work towards a unified prototype, consider using iterative design sprints. Set short-term goals for specific aspects of your product, prototype and test them, then incorporate what you've learned into the next iteration. This approach allows you to make steady progress while remaining flexible and responsive to new insights.

Remember, the goal at this stage isn't perfection. Your prototype should be good enough to demonstrate your product's core value proposition and gather meaningful feedback. Don't get bogged down trying to resolve every minor issue – there will be time for fine-tuning in later stages.

By the end of the looks-like/works-like stage, you should have a prototype that resembles your envisioned final product both externally and functionally. It might not be pretty on the inside, and there may still be rough edges, but it should be capable of demonstrating your product's key features and value to potential users, team members, and investors.

With this unified prototype in hand, you're ready to move on to the next phase of the journey: Engineering Validation Testing (EVT). But before we dive into EVT, take a moment to celebrate this milestone. You've taken a significant step forward, transforming your idea into something tangible and functional. The road ahead will have its challenges, but you've laid a solid foundation for success.

Engineering Validation Test (EVT): Proving Your Product's Mettle

With a unified prototype in hand, you're ready to enter the Engineering Validation Test (EVT) phase. This stage marks a significant shift in your product development journey. You're moving from proof-of-concept to proof-of-feasibility, aiming to validate that your product can be manufactured and that it meets its core performance requirements.

The primary goal of EVT is to prove that your product's critical functionalities work in a form factor close to the final design. This stage involves building a small batch of prototypes, typically ranging from 5 to 10 units, that closely resemble the intended final product.

These EVT units are not built on a production line but are usually hand-assembled by your engineering team. They should use materials and components that are as close as possible to what you intend to use in the final product. This approach allows you to test the interaction between components and identify any issues that might arise from your chosen materials or design.

During EVT, you'll subject your prototypes to a battery of tests designed to validate core functionality and identify any major design flaws. This testing regime typically includes:

1. Functionality Testing: This involves meticulously testing each feature of your product to ensure it performs as intended. For a smartphone, this might include testing the touchscreen responsiveness, camera quality, speaker output, and so on.

2. Performance Testing: Here, you're looking at how well your product performs its primary functions. Does it meet the speed, accuracy, or efficiency benchmarks you've set? For a fitness tracker, you might test the accuracy of step counting or heart rate monitoring under various conditions.

3. Environmental Testing: Your product needs to function in the real world, which means it needs to withstand the conditions it will face during normal use. This could involve testing in extreme temperatures, high humidity, or even simulated rain for water-resistant products.

4. Preliminary Safety Testing: While full safety certification usually comes later, EVT is the time to start checking that your product meets basic safety standards. This is particularly crucial for products that use batteries, connect to main power, or are intended for use by children.

5. Stress Testing: This involves pushing your product beyond its normal operating parameters to identify potential failure points. You might run a device continuously for days, simulate years of use in a compressed timeframe, or subject it to forces beyond what it would normally experience.

The Challenges of EVT and How to Overcome Them

One of the biggest challenges during EVT is balancing functionality with form factor. As you work to fit all the necessary components into your desired design, you may encounter issues with heat dissipation, signal interference, or simply running out of space. This is where creative problem-solving and sometimes difficult trade-offs come into play.

Take the development of the Microsoft Surface Pro as an example. The team faced significant challenges in creating a full-powered PC in a tablet form factor. Heat management was a particular issue, leading to the development of an innovative cooling system that uses the kickstand as a heat sink. This kind of creative solution often emerges from the challenges encountered during EVT.

Another common challenge is dealing with unexpected issues that arise during testing. No matter how well you've planned, you're likely to encounter some surprises when you start putting your product through its paces. The key here is to remain flexible and have a diverse team ready to tackle problems from different angles.

For instance, when Dyson was developing its first bladeless fan, they encountered unexpected noise issues during EVT. The air flow was creating a high-pitched whistle that wasn't apparent in earlier prototypes. This led to a series of design iterations and the development of new testing methodologies to quantify and minimize the noise.

Maintaining momentum can also be challenging during EVT, especially when facing setbacks or unexpected problems. It's crucial to keep your team motivated and stakeholders informed of progress. Set clear milestones and celebrate small victories along the way. Remember, every problem solved is a step towards a better product.

The insights gained during EVT are invaluable for refining your product design. Every test, every failure, and every unexpected result is an opportunity to improve your product. Be prepared to make changes to your hardware design, firmware, and software based on your findings.

It's also during EVT that you should start seriously considering manufacturability and cost optimization. As you resolve design issues, always keep in mind how your solutions will translate to mass production. A complex assembly process or an expensive custom part might solve a problem in your EVT units, but could make your product unviable when scaled up to full production.

By the end of the EVT phase, you should have a prototype that not only looks and works like your envisioned final product, but has also proven its core functionality under testing. You'll have identified and resolved major design issues, and you'll have a clear understanding of what changes need to be made before moving to the next stage.

Remember, EVT is like sending your product to boot camp. It might be tough, but your product will come out stronger, more reliable, and one big step closer to market readiness. With the lessons learned from EVT, you're now prepared to move on to the next crucial stage: Design Validation Testing (DVT).

Design Validation Test (DVT): Refining Your Product for the Real World

Having successfully navigated the Engineering Validation Test phase, your product has proven its basic functionality and feasibility. Now, it's time to take things to the next level with Design Validation Testing (DVT). This crucial stage is where your product transitions from a working prototype to a design that's ready for mass production.

The primary objective of DVT is to validate that your final design meets all specifications and quality standards, and can be manufactured at scale. This phase involves producing a larger batch of prototypes, typically ranging from 50 to 200 units, using production-intent processes. This means that while you're not yet in full production, you're using processes, materials, and components that closely mimic what you'll use in the final manufacturing run.

During DVT, you'll be focusing on several key areas:

Comprehensive Testing: DVT involves a much more rigorous and extensive testing regime compared to EVT. You'll be conducting a wide array of tests to ensure your product performs consistently and reliably under various conditions. This includes:

Let's consider the example of Tesla's Model 3 production ramp-up. During the DVT phase, Tesla encountered significant challenges with their automated production line, particularly with battery module assembly. These issues led to what Elon Musk referred to as "production hell," necessitating a redesign of parts of the manufacturing process and even the construction of a new production line under a tent in the factory parking lot. This illustrates the critical importance of thoroughly validating and refining manufacturing processes during DVT.

Supply Chain Verification: DVT is also the time to ensure that your supply chain is robust and can support full-scale production. This involves:

The importance of thorough supply chain verification was starkly illustrated during the global chip shortage that began in 2020. Companies that had diversified their supply chains and had alternative sources for key components were better able to weather the storm.

Final Design Tweaks: Based on the results of your comprehensive testing and manufacturing process validation, you'll likely need to make some final adjustments to your product design. These could range from minor tweaks to more significant changes if serious issues are uncovered. The key is to remain flexible and be willing to make changes that will improve the product's performance, reliability, or manufacturability.

One of the primary challenges during DVT is balancing quality and cost. As you refine your design and manufacturing processes, you'll often encounter opportunities to reduce costs, but these must be carefully weighed against potential impacts on quality.

A useful approach here is value engineering – a systematic method of improving the "value" of goods or products and services by examining their function. Value, in this context, is the ratio of function to cost. The goal is to maximize function while minimizing cost. This might involve:

Another significant challenge during DVT is meeting all necessary regulatory requirements. Different markets have different standards and certifications, and navigating this complex landscape can be daunting. It's crucial to engage with regulatory experts early in the process and build a comprehensive checklist of all necessary certifications for your target markets.

Apple's experience with the original iPhone provides an interesting case study here. The development team was so focused on creating a revolutionary product that they initially overlooked some of the regulatory requirements for mobile phones. This led to a scramble in the final months before launch to ensure compliance with FCC regulations, including making last-minute changes to the phone's electronics to reduce electromagnetic emissions.

By the end of the DVT phase, you should have a final design that not only functions as intended but has also proven its reliability, manufacturability, and compliance with relevant standards. You'll have ironed out any remaining kinks in your manufacturing process and validated your supply chain.

However, your journey isn't over yet. The next and final stage before full production is Production Validation Testing (PVT). This is where you'll prove that your product can be consistently manufactured at scale while maintaining the quality and performance standards you've established.

Production Validation Test (PVT): The Final Countdown

Production Validation Testing represents the last major hurdle before your product enters full-scale manufacturing and hits the market. This critical phase is all about ensuring that your carefully designed and tested product can be consistently produced at scale, maintaining the quality and performance you've worked so hard to achieve.

During PVT, you'll manufacture a pilot run of your product. This typically involves producing 100 to 500 units (or more for high-volume products), using the actual production lines, tools, and processes that will be used for the full production run.

Here's a deeper look at what happens during PVT:

Full Production Line Testing: Unlike in previous stages where units might have been hand-assembled or produced on prototype lines, PVT units are manufactured on the actual production lines that will be used for full-scale production. This allows you to:

Let's consider the launch of Microsoft's Xbox 360 as an example. During PVT, Microsoft produced thousands of units to test their production processes. However, they faced challenges with yield rates and quality control, particularly with the GPU assembly. These issues, which weren't fully resolved during PVT, contributed to the infamous "Red Ring of Death" problem that plagued early Xbox 360 units after launch. This underscores the critical importance of thorough testing and problem-solving during the PVT phase.

Quality Assurance at Scale: PVT is your opportunity to validate that your quality control processes can effectively catch defects when operating at production speeds. This typically involves:

For example, when Apple was preparing to launch the first MacBook Air, they discovered during PVT that the ultra-thin aluminum casing was prone to small dents and scratches during the manufacturing process. This led to the development of new handling procedures and quality control checks to ensure that each unit met Apple's stringent cosmetic standards.

Production Line Optimization: PVT is your last chance to fine-tune your manufacturing processes before full production. This might involve:

Tesla's production ramp-up for the Model 3 provides an instructive example here. During PVT and early production, Tesla continually refined their manufacturing processes, even going so far as to build a new assembly line in a giant tent outside their factory. This unorthodox approach allowed them to rapidly iterate on their production processes, ultimately achieving their target production rate.

Supply Chain Validation: PVT is the final test of your supply chain before full production. You'll be confirming that:

The importance of thorough supply chain validation was demonstrated during the launch of Sony's PlayStation 5. Despite extensive planning and testing, Sony faced significant supply chain challenges that limited their ability to meet consumer demand. While some of these issues were due to external factors (like the global chip shortage), it highlights the critical importance of robust supply chain planning and validation during PVT.

Finalizing the Product Ecosystem: PVT is not just about the product itself, but the entire ecosystem around it. This includes:

Apple's approach to the "unboxing experience" is a prime example of the attention to detail required here. During PVT for new iPhone models, Apple meticulously tests and refines every aspect of the packaging, from the way the lid lifts off the box to the arrangement of accessories inside. This level of detail contributes significantly to the premium feel of their products and the overall customer experience.

Product Prototyping Stages: From Concept to Production

Mastering the Prototyping Journey

From Napkin Sketch to Next-Gen Therapy Tool: The Whirlwind Tale of Fiddlie's EMDR Light Bar Adventure

Ladies and gentlemen, gather 'round for a tale of daring design, engineering escapades, and a race against the clock that would make even Tom Cruise's Mission Impossible team break a sweat. Welcome to the behind-the-scenes story of how we at Fiddlie turned a brilliant idea into a game-changing EMDR therapy tool faster than you can say "rapid prototyping."

It was just another Tuesday at Fiddlie HQ. The coffee was brewing, the 3D printers were humming, and then... ring ring! On the other end of the line was Mentric, a company with a vision to revolutionize EMDR therapy. Their mission, should we choose to accept it: Create a high-tech, aesthetically pleasing EMDR light bar that works for both home users and clinics. Oh, and they needed a working prototype pronto. Like, "yesterday" pronto.

The Challenge: A Tightrope Walk Between Tech and Design

- A sleek 50cm light bar that wouldn't look out of place in a modern art gallery

- Full RGBW lights with diffusion smoother than a fresh jar of Skippy

- Customizable patterns, speed, and brightness (because one size doesn't fit all in therapy)

- Bluetooth Low Energy capabilities (for all you app-lovers out there)

- A wooden exterior that would make Geppetto jealous

- Portable and rechargeable (because tangled cords are so last century)

- Intuitive controls that even a technophobe could love

And the kicker? They needed this all designed, prototyped, and delivered in a timeframe that would make most product developers run for the hills. But at Fiddlie, we don't run from challenges. We run towards them, arms open, yelling "Bring it on!"

The Fiddlie Fast Track: How We Made the Magic Happen

Our team huddled up, armed with enough coffee to fuel a small country. Ideas flew faster than a SpaceX rocket as we brainstormed how to turn this ambitious vision into reality.

Our CAD magicians got to work, their fingers flying over keyboards, creating 3D models of the enclosure and PCB faster than you can say "parametric modeling." It was like watching a digital sculpture come to life, only with more technical jargon and occasional cries of "Eureka!"

While the enclosure was taking shape in the digital realm, our electronics gurus were cooking up a PCB that would make even Tony Stark nod in approval. We're talking custom-designed circuitry to control those RGBW lights, manage patterns, and integrate BLE, all while keeping things compact and efficient on a single board. It was like solving a Rubik's Cube, only with a robot soldering it and much less colorful plastic.

Next up, we tackled the user interface. Our goal? Make it so intuitive that even your tech-averse Uncle Bob could use it without breaking a sweat. We designed responsive buttons and logical controls that practically whisper "Press me, I'm user-friendly" to anyone who lays eyes on them.

Step 5: The Mad Dash to Prototype Paradise

With designs in hand, we shifted into overdrive. Our prototype lab became a blur of activity. 3D printers whirred, soldering irons sizzled, and our team moved with the coordinated precision of a well-oiled machine (or a chaotic but effective flash mob, depending on who you ask).

The Result: A Therapy Tool That's Equal Parts Art and Science

In less time than it takes most people to decide on their next Netflix binge, we emerged from our lab, blinking in the sunlight, with a fully functional prototype of the Mentric EMDR light bar. And let me tell you, it was a thing of beauty:

- A wooden exterior so sleek and stylish, it could moonlight as a Scandinavian design piece

- RGBW lights that transition more smoothly than a chameleon changing colors

- Intuitive buttons that respond faster than a cat to a laser pointer

- A range of light patterns more diverse than a box of assorted chocolates

- Battery life that could give the Energizer Bunny a run for its money

- Bluetooth capabilities ready to connect faster than teens on TikTok

Why This Project Makes Us Do the Happy Dance

Sure, creating cool gadgets is part of our everyday jam at Fiddlie. But this project? It was special. Here's why:

1. Pushing the Envelope: We didn't just push the envelope; we practically reinvented the postal system. This project proved that with the right team and mindset, "impossible" deadlines become "challenging but achievable" milestones.

2. Marrying Form and Function: We created a device that's not just a powerful therapy tool but also a piece of art. It's the kind of product that makes you go "Oooh" when you see it and "Aaah" when you use it.

3. Rapid Prototyping Mastery: We showcased our ability to go from concept to functional prototype faster than a cheetah on roller skates. It's a testament to our streamlined processes and the sheer talent of our team.

4. Tech for Good: At the end of the day, we're not just building gadgets; we're creating tools that have the potential to improve lives. The Mentric EMDR light bar could help countless people in their therapy journeys, and that feels pretty darn good.

5. Client Satisfaction: The looks on Mentric's faces when we unveiled the prototype? Priceless. It was like watching kids on Christmas morning, if those kids were really into high-tech therapy tools.

So, what's the takeaway from this whirlwind adventure in product development? A few things:

1. No challenge is too big when you've got a passionate team and a can-do attitude.

2. Rapid prototyping isn't just possible; it's our superpower.

3. Great design can elevate any product, even in fields you might not expect.

4. Never underestimate the power of caffeine and collaboration.

5. At Fiddlie, we don't just meet expectations; we launch them into the stratosphere.

As we bask in the afterglow of this successful mission, we're already gearing up for the next impossible challenge. Will it be a self-aware toaster? A hoverboard that actually hovers? A device that lets you taste food through your smartphone? (Okay, maybe we're getting carried away, but you get the idea.)

One thing's for sure: whatever the next challenge is, we'll be ready to tackle it with the same mix of creativity, technical expertise, and slightly caffeinated enthusiasm that made the Mentric EMDR light bar a reality.

So, innovators, dreamers, and challenge-seekers, we've got a message for you: Bring us your wild ideas, your "impossible" projects, your visions of a tech-enhanced future. At Fiddlie, we're not just ready for the next big thing – we're itching to help create it.

Stay tuned for more tales from the prototyping frontier. Who knows? Your game-changing idea could be our next impossible mission!

our blog.

TRLs and Funding: Your Guide to Paying for Innovation.

Revolutionizing Canine Oral Care.

Kickstart Your Career with Fiddlie: Summer 2025 Internship Opportunities.

How to Use AI to Develop Your Product Idea: A Guide for New Founders.

Product Prototyping Stages: From Concept to Production.

how we built a game-changing EMDR light bar.

links

services

info

socials