Hardware Startups with Fexingo: Devices, Robotics, and Manufacturing Tech Companies

In this episode of Hardware Startups with Fexingo, Lucas and Luna explore how modern hardware startups leverage Fused Deposition Modeling (FDM) to create functional prototypes for testing form, fit, and function — not just display models. They break down the specific materials and settings that make FDM viable for end-use-like testing, including carbon-fiber-filled nylon for structural parts and p...

In this episode of Hardware Startups with Fexingo, Lucas and Luna explore how hardware startups are using micro injection molding to produce tiny, high-precision plastic parts for medical devices, sensors, and wearables. They discuss the challenges of tooling, material flow, and ejection for parts weighing less than a gram, and look at a case study of a startup that reduced assembly steps by moldi...

In this episode of Hardware Startups with Fexingo, Lucas and Luna explore how helium leak testing helps hardware startups ensure hermetic seals in devices ranging from medical implants to outdoor sensors. They break down the physics — helium molecules are tiny, so any leak shows up fast — and walk through the setup: a vacuum chamber, a mass spectrometer, and a canister of helium. Lucas explains wh...

Episode 76 of Hardware Startups with Fexingo dives into selective soldering — a critical process for hardware startups that need to mix through-hole and surface-mount components on the same board. Lucas and Luna explore why this matters, using the example of a medical device startup that had to hand-solder a high-reliability connector until they adopted a selective soldering machine. They break do...

In this episode, Lucas and Luna explore temperature cycling—a critical but often overlooked reliability test for hardware startups. They break down how thermal expansion mismatches cause solder joint failures, why a 500-cycle profile reveals latent defects, and how a drone startup caught a field failure before launch using a $15,000 chamber instead of a $100,000 one. They also discuss the differen...

In this episode, Lucas and Luna explore how hardware startups are deploying Fanuc industrial robots for assembly tasks — not just the automotive giants. They walk through a specific case: a 10-person robotics startup that used a refurbished Fanuc LR Mate 200iD to automate their final assembly line, cutting cycle time from 12 minutes to 3.5 minutes per unit while reducing defect rates by 60 percent...

In this episode, Lucas and Luna explore a critical but often overlooked part of hardware manufacturing: wire harness assembly. They dig into why most field failures in connected devices trace back to a single loose crimp or poorly seated connector, not a chip failure. Drawing on data from a recent teardown of a smart thermostat that failed after six months, they explain how startups can implement...

In episode 72 of Hardware Startups with Fexingo, Lucas and Luna dive into the unsung hero of surface-mount assembly: the stencil. They explain how a laser-cut stainless steel sheet—typically 0.004 to 0.006 inches thick—determines whether your boards work first time or fail in the field. Lucas breaks down aperture area ratio rules (must be above 0.66 for good transfer), while Luna shares a cautiona...

In this episode of Hardware Startups with Fexingo, Lucas and Luna explore wire bonding — the process of making microscopic connections between bare chips and circuit boards using fine aluminum or gold wires. They unpack why chip-on-board (COB) assembly matters for hardware startups building compact, high-reliability products like sensors, wearables, and medical devices. Lucas cites a real-world ex...

Most hardware startups think solder is solder — but the alloy choice can make or break reliability, cost, and regulatory compliance. Lucas and Luna trace the practical trade-offs between SAC305, SAC105, and the newer low-temperature bismuth-based pastes. They walk through a real case: a smart-sensor startup that switched from SAC305 to a bismuth-tin alloy to avoid warping thin PCBs, saving twenty...

When PCBs get too dense for physical probes, hardware startups turn to boundary scan testing. Lucas and Luna walk through how Joint Test Action Group (JTAG) standards let you test solder joints and interconnects without touching a single pin. They cover the 1149.1 standard, how scan chains work, and why a startup building a 12-layer board saved three months of debug time by catching a hidden via d...

In this episode of Hardware Startups with Fexingo, Lucas and Luna dive into vibration testing—a critical but often overlooked step in hardware reliability. They explore how startups like Astro Teller's X division use random vibration profiles to simulate years of shipping damage in hours. Lucas explains the difference between sine sweep and random vibration, the cost of entry-level electrodynamic...

In episode 67 of Hardware Startups with Fexingo, Lucas and Luna delve into automated optical inspection (AOI) for verifying solder joint quality on high-density circuit boards. They discuss how a medical device startup reduced field failures by 40% using 3D AOI, the difference between 2D and 3D inspection, and why false positives matter more than catch rate. Lucas explains how AOI systems capture...

Lucas and Luna explore friction stir welding, a solid-state joining technique that hardware startups are increasingly adopting to create strong, hermetic aluminum enclosures without melting the base metal. Lucas opens with a specific case: a drone startup that switched from epoxy bonding to FSW and cut assembly time by 40 percent while improving waterproofing. Luna asks how the process avoids dist...

In this episode of Hardware Startups with Fexingo, Lucas and Luna dive into conformal coating—a thin protective layer applied to printed circuit boards to shield them from moisture, dust, and corrosion. Lucas explains why startups often skip this step to save cost, only to face high failure rates in humid or outdoor environments. He breaks down the three common chemistries: acrylic, urethane, and...

This episode of Hardware Startups with Fexingo dives into in-circuit testing (ICT) — the unsung hero of assembly quality. Lucas and Luna break down how a single ICT fixture can catch soldering defects like cold joints, shorts, and missing components before a board ever gets powered on. They walk through the cost-benefit trade-offs versus flying probe testing, explain why ICT is ideal for high-volu...

This episode of Hardware Startups with Fexingo dives into solder paste inspection (SPI) — the unsung quality gate that stops reflow disasters before they happen. Lucas explains how a $50 million IoT sensor startup reduced its field failure rate by 80 percent simply by adding an inline SPI machine to its SMT line. Luna questions whether the investment makes sense for very low-volume prototyping, an...

Episode 62 of Hardware Startups with Fexingo dives into ultrasonic welding — a fast, clean method for joining plastic parts without adhesives or screws. Lucas and Luna explain how startup hardware makers use 20 kHz vibrations to fuse enclosures, water-seal wearables, and reduce assembly costs. They walk through the physics of a horn and anvil, the importance of energy directors, and real trade-off...

In Episode 61 of Hardware Startups with Fexingo, Lucas and Luna explore how hardware startups are embedding low-cost MEMS accelerometers into industrial equipment to enable predictive maintenance. They break down the real-world case of a startup called VibeSense that cut unplanned downtime by 38% for a midwestern pump manufacturer using edge-based vibration analysis. Lucas explains the difference...

Lucas and Luna explore how hardware startups are using digital twins — virtual replicas of physical devices — to simulate real-world performance before building a single physical prototype. The episode centers on a specific case: a 2024 startup that cut its development cycle from 18 months to 9 by pairing a digital twin with a low-cost sensor rig. Lucas breaks down the three layers of a useful dig...

Episode 59 dives into nickel plating — the unsung hero of hardware reliability. Lucas explains why a 30-micron layer of electroless nickel can mean the difference between a product lasting six months and six years, especially in humid or outdoor environments. He breaks down the chemistry: electroless versus electrolytic plating, the role of phosphorus content, and why the process is surprisingly a...

Episode 58 of Hardware Startups with Fexingo dives into overmolding — the process of encasing electronics in a second plastic layer for waterproofing, impact resistance, and cable strain relief. Lucas and Luna examine how a hypothetical smart outdoor sensor startup uses a two-shot injection molding process to achieve IP68 rating and survive a five-foot drop. They break down the tooling cost — $30,...

In this episode, Lucas and Luna dive into automated optical inspection (AOI) — the machine-vision systems that hardware startups use to catch PCB defects before they become field failures. They break down how AOI works, what it costs, and why a $5,000 desktop AOI machine can save a startup from a $100,000 recall. Using a real example of a 2025 smart-lamp startup that caught a tombstoned resistor d...

Episode 56 of Hardware Startups with Fexingo. Lucas and Luna dive into Design of Experiments (DOE) — a statistical method that hardware startups use to optimize part tolerances and save thousands in manufacturing costs. They break down a real scenario: a startup making a temperature sensor enclosure that initially had a 15 percent reject rate. By running a fractional factorial DOE on just 8 protot...

Episode 55 of Hardware Startups with Fexingo. Lucas and Luna dive into why functional testing — not just flying probe or boundary scan — is the unsung hero of hardware quality. They break down a real case: a medical device startup that shipped 500 units before discovering a firmware-hardware timing bug that only surfaced under load. The fix added a $3,500 functional test fixture that caught the is...