Episode 52 of Hardware Startups with Fexingo dives into flexible printed circuits (FPCs) — the bendable, space-saving alternative to rigid PCBs. Lucas and Luna explain why startups in wearables, robotics, and medical devices are turning to FPCs, using the example of a smart ring startup that cut its device thickness by 40 percent. They break the trade-offs: lower per-unit cost at scale but higher NRE and trickier assembly. Listeners learn about dynamic vs. static flex applications, the role of polyimide substrates, and why stiffeners matter. The episode also covers common pitfalls like copper fatigue and impedance mismatch, plus a real-world tip from a founder who prototypes FPCs with a laser cutter before committing to tooling. If you're building a connected device and hitting space or weight limits, this episode gives you the vocabulary to talk to your CM. No fluff, just the engineering decisions that separate working prototypes from shippable products.

#HardwareStartups #FlexibleCircuits #FPC #PCBAssembly #Wearables #Robotics #MedicalDevices #ProductDesign #Manufacturing #Prototyping #Polyimide #CopperFatigue #ImpedanceControl #DesignForAssembly #Business #Technology #FexingoBusiness #BusinessPodcast

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Most people think soldering is just soldering — but for hardware startups building devices that combine through-hole and surface-mount components on the same board, selective soldering is a game-changer. In this episode, Lucas and Luna walk through a real case: a startup making industrial sensors that needed to manually solder a high-power connector onto an otherwise automated SMT board. They break down why wave soldering would have destroyed nearby delicate parts, how a small benchtop selective soldering machine solved it for under $15,000, and why this technique is becoming essential for low-volume mixed-technology prototypes. Lucas shares the specific thermal profile tweak that prevented tombstoning on adjacent components. Luna asks the hard question: when does selective soldering stop making sense versus hand soldering or redesigning the board? They also touch on how contract manufacturers are now offering selective soldering as a standard service, even for runs under 500 units. If you're building hardware that combines power electronics with digital logic on one PCB, this episode will save you from a common rework nightmare.

#HardwareStartups #SelectiveSoldering #PCBAssembly #ThroughHole #SurfaceMount #ManufacturingTech #ElectronicsManufacturing #Prototyping #IndustrialSensors #SMT #WaveSoldering #ThermalProfile #Tombstoning #ContractManufacturing #LowVolumeProduction #Business #Technology #FexingoBusiness

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In Episode 50, Lucas and Luna explore how hardware startups use jigs and fixtures to achieve repeatable assembly without expensive automation. They break down a real-world example: a two-person startup producing 500 sensor units per month with a custom alignment jig that reduced assembly time by 40% and eliminated a common rework loop. The conversation covers the difference between jigs and fixtures, when to invest in custom tooling versus modular systems, and why even a simple plywood fixture can save weeks of debugging. Lucas explains the cost-benefit math for early-stage hardware companies, and Luna shares a counterexample where a startup overbuilt fixtures too early and wasted capital. They close by discussing how CNC-machined aluminum fixtures from Xometry or Protolabs compare to 3D-printed alternatives, and why the right fixture often pays for itself in under three months.

#JigsAndFixtures #HardwareStartups #Manufacturing #Assembly #Repeatability #Prototyping #CNCMachining #3DPrinting #Xometry #Protolabs #QualityControl #LeanManufacturing #ProductionScaling #CustomTooling #ModularFixtures #Business #FexingoBusiness #BusinessPodcast

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In this episode of Hardware Startups with Fexingo, Lucas and Luna explore why bare-metal programming is making a comeback among early-stage hardware startups. They break down how skipping an operating system can cut boot times from seconds to milliseconds, reduce bill-of-materials costs by eliminating the need for high-end microcontrollers, and give engineers full control over power consumption. Lucas walks through a real example: a smart sensor startup that needed a 50-millisecond wake-to-transmit cycle to hit a 10-year battery life on a coin cell. They discuss the trade-offs — no multitasking, no USB stack, no over-the-air updates without writing it yourself — and when a startup should graduate to an RTOS like FreeRTOS. The conversation also touches on how bare-metal code simplifies certification for medical devices and industrial IoT, where deterministic timing matters more than developer convenience. If you're building a connected device on a tight budget, this episode shows why writing direct to the metal might be the smartest first move.

#BareMetalProgramming #HardwareStartups #EmbeddedSystems #Microcontroller #StartupEngineering #Firmware #IoT #LowPower #CoinCell #MedicalDevice #IndustrialIoT #RTOS #FreeRTOS #BootTime #PowerOptimization #Business #FexingoBusiness #BusinessPodcast

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In this episode of Hardware Startups with Fexingo, Lucas and Luna explore how open source hardware is helping startups cut development time and costs by leveraging shared designs. They dive into the RISC-V instruction set architecture as a case study, explaining how startups avoid ARM licensing fees and customize chips for specific use cases. The discussion covers practical examples like the HiFive development board and how companies are using open source PCB designs from GitHub to jumpstart their products. Lucas and Luna also touch on the trade-offs, including lack of support and quality control risks. The episode includes a brief donation segment highlighting the show's ad-free mission.

#OpenSourceHardware #RISC-V #HardwareStartups #FexingoBusiness #BusinessPodcast #Technology #BusinessAndTechnology #HardwareEngineering #PCBDesign #StartupStrategy #IntellectualProperty #SupplyChain #Prototyping #HiFive #ARM #CustomChips #LicensingFees #AcceleratedDevelopment

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In this episode of Hardware Startups with Fexingo, Lucas and Luna dive into vibration analysis — a critical but underappreciated technique that hardware startups use to catch failures before they happen in the field. Lucas explains how a small robotics startup used a $400 accelerometer and open-source software to identify a resonance issue in their motor mount that would have caused premature bearing wear. They contrast this with traditional approaches like finite element analysis, and discuss how startups can build a vibration testing rig for under a thousand dollars. Luna shares a story about a drone company that caught a propeller imbalance during development, saving them a costly recall. They also touch on the limits of vibration analysis for very small or very large devices. The episode closes with a brief, organic mention of how listener support via buy me a coffee dot com slash fexingo helps keep the show ad-free and enables deep dives like this one.

#HardwareStartups #VibrationAnalysis #Accelerometer #Resonance #PredictiveMaintenance #FFT #FastFourierTransform #Robotics #Drone #FieldFailures #ModalAnalysis #Prototyping #BusinessAndTechnology #FexingoBusiness #BusinessPodcast #LucasAndLuna #StartupEngineering #ProductReliability

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Episode 46 of Hardware Startups with Fexingo dives into Design for Assembly (DFA) — the discipline of designing a product so it can be assembled in fewer steps, with cheaper labor, and less rework. Lucas and Luna break down a real-world case: how a smart-lock startup cut its per-unit assembly cost by 38% just by eliminating six screws and swapping two parts. They walk through the DFA principles that any hardware founder can apply before their first production run, from snap-fit geometry to reducing part count. If you've ever wondered why some hardware startups scale profitably while others get wrecked by manufacturing complexity, this episode shows you the engineering decisions that separate the two. Practical, specific, and grounded in the numbers that matter.

#DesignForAssembly #HardwareStartups #Manufacturing #SmartLock #AssemblyCost #SnapFit #PartCountReduction #ProductionScale #HardwareEngineering #StartupOperations #BusinessAndTechnology #FexingoBusiness #BusinessPodcast #HardwarePodcast #CostReduction #ProductDesign #ManufacturingEngineering #LeanProduction

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In this episode, Lucas and Luna explore how hardware startups use modular design to reduce cost, accelerate production, and adapt to market changes without redesigning the entire device. They break down the modular approach used by the smart-lock startup August Home and the robot maker iRobot, comparing it with integrated design. Lucas explains how a modular architecture can cut time-to-market by 40 percent and reduce inventory risk across product generations. Luna pushes back on the trade-offs: higher upfront engineering cost and potential compromises on size and power efficiency. Together they unpack why hardware investors are increasingly asking founders about their design-for-modularity strategy, and how the rise of USB-C and standardized connectors has made modular design cheaper than ever. They also touch on Tesla's battery pack modularity as a contrasting example from the automotive world. A concrete guide for founders deciding between modular and integrated design.

#HardwareStartups #ModularDesign #ProductDesign #AugustHome #IRobot #TeslaBattery #DFM #ScalableManufacturing #HardwareEngineering #ProductDevelopment #StartupStrategy #TechBusiness #EmbeddedSystems #USBCHub #DesignForManufacturing #FexingoBusiness #BusinessPodcast #BusinessAndTechnology

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Today Lucas and Luna dive into conformal coating—a thin protective layer that hardware startups apply to circuit boards to shield them from moisture, dust, vibration, and corrosion. They explore why a small robotics startup that skipped this step suffered a 12 percent field failure rate in humid environments, and how a drone company used selective coating to cut warranty claims by 80 percent. They break down the three main coating types—acrylic, silicone, and urethane—when each makes sense, and why early-stage hardware teams often overlook this step until it's too late. Lucas explains the cost tradeoffs: coating adds roughly 50 cents to $2 per board, but can save thousands in returns and reputation. They also discuss automation options like robotic spraying versus hand brushing, and how founders can audit their manufacturing partners to ensure coating is done right. If you're building physical products, this is the kind of manufacturing detail that separates a launch from a recall.

#HardwareStartups #ConformalCoating #PCB #Manufacturing #Electronics #Reliability #DroneCompany #WarrantyClaims #FieldFailure #Humidity #Acrylic #Silicone #Urethane #RoboticSpraying #ContractManufacturer #Business #FexingoBusiness #BusinessPodcast

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Episode 43 of Hardware Startups with Fexingo dives into a hidden hero of rugged device design: potting compound. Lucas and Luna explore how early-stage hardware startups are using epoxy and urethane encapsulation to protect electronics from moisture, vibration, and thermal shock—without a cleanroom or million-dollar budget. The episode centers on a specific case: a 2025 agtech startup that potted its soil sensors in a garage using a $200 vacuum chamber, achieving IP68 rating and cutting field failure rates from 18% to under 2%. Lucas breaks down the chemistry, the cost trade-offs, and why potting beats conformal coating for certain applications. Luna asks the tough questions about repairability and thermal management. They also discuss the recent shift toward bio-based potting materials and what it means for sustainability-minded founders. If you're building hardware that has to survive mud, rain, or factory floors, this episode gives you a concrete decision framework.

#PottingCompound #HardwareStartups #ElectronicsEncapsulation #ConformalCoating #Agtech #IP68 #EpoxyPotting #UrethanePotting #GarageManufacturing #VacuumChamber #ThermalManagement #Repairability #BioBasedMaterials #SiliconeEncapsulation #FexingoBusiness #BusinessPodcast #DevicesAndRobotics #ManufacturingTech

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