Independent projects — infrastructure, robotics, technology surveys, and corporate research
41 entries total

Articles

September 8, 2026 Robotics Primer

Visual-SLAM Primer — How a Camera Learns "Where Am I"

With no GPS and no map, a robot can still find its own position and build a map of its surroundings from camera images alone. From feature tracking through epipolar geometry, the difference between Visual Odometry and SLAM, the lineage of landmark algorithms from ORB-SLAM to LSD-SLAM and DSO, and Bundle Adjustment, a systematic ground-up tour of how Visual-SLAM actually works.

September 6, 2026 Robotics Primer

Sensor Fusion Primer — Building One World Model From Many Sensors

A camera is strong on meaning, a LiDAR is strong on geometry, an IMU is strong on motion — and each has its own blind spot. From the probabilistic and optimization-based math that fuses them (Kalman Filters, Factor Graphs) to concrete pairings like VIO (Camera×IMU), LIO (LiDAR×IMU), and BEV Fusion (Camera×LiDAR), a systematic tour of how Sensor Fusion turns several sensors into a single world model.

September 5, 2026 Robotics Primer

Object Detection & Semantic Segmentation Primer — Reading "What Is Where" From an Image

Object Detection draws boxes around things; Semantic Segmentation colors in every pixel by meaning. From the difference between the two, through Instance and Panoptic Segmentation, the lineage from R-CNN to YOLO, DETR and DINO, all the way to their 3D point-cloud counterparts — a systematic tour of the fundamentals of scene understanding.

September 4, 2026 Sensors & Hardware

How Rotary Encoders Work — Optical and Magnetic

We compare the two operating principles behind the rotary encoder — optical, which reads position by interrupting light, and magnetic, which reads the direction of a magnetic field — from a motor's shaft angle and speed sensor. From the encoder industry's surprising origin at an organ maker, to the newbot project's real measurement of a 1.2m straight-line run being misread as an 80° turn when the actual rotation was 6.5°, we trace the real story of the encoder that underpins — and sometimes betrays — wheel odometry accuracy.

September 3, 2026 Sensors & Hardware

How Actuators Work — BLDC, Stepper, Servo Motors

We compare the actuators that serve as a robot's "muscles" across three angles — the BLDC motor, the stepper motor, and the servo motor. These three aren't actually a parallel classification; motor construction (BLDC/stepper) and control architecture (servo) are two different axes that get conflated. Untangling that confusion, we trace the real torque/response/control tradeoffs from NASA's brush-wear-in-vacuum problem to the birth of Wiener's cybernetics.

September 2, 2026 Sensors & Hardware

How Batteries and BMS Work — Molicel, DJI, Samsung SDI

What determines a robot's or drone's range and safety isn't the motor or the sensor suite — it's the battery and its BMS (Battery Management System). From the electrochemistry of lithium-ion cells to cell balancing and protection circuits, we compare real specs from Molicel's high-discharge cells, DJI's intelligent flight batteries, and Samsung SDI's push into next-generation solid-state batteries — and look at what the Boeing 787 fire taught the industry about the limits of a BMS.

September 2, 2026 Sensors & Hardware

How Force & Tactile Sensors Work — ATI, Bota, XELA

Force sensors give a robot arm its 'sense of the arm,' and tactile sensors give a robot hand its 'sense of the fingertips.' We trace the physics from strain gauges through three tactile-sensing approaches — piezoresistive, capacitive, and optical — and survey real products from ATI, Bota Systems, and XELA Robotics to Shadow Robot's prosthetic-style hand carrying 129 sensors, alongside the true story of the strain gauge's simultaneous invention in 1938.

September 2, 2026 Sensors & Hardware

How SBCs Work and Key Products — Raspberry Pi 5, Jetson, Coral

We compare the embedded computers that serve as a robot's "brain" across three design philosophies — the general-purpose SoC of the Raspberry Pi 5, the GPU-integrated AI computer of NVIDIA Jetson Orin, and the dedicated ASIC of Google Coral. From what the TOPS/W efficiency metric actually means, to why the newbot project chose a general-purpose SoC, to the real 2026 story of an AI-datacenter DRAM crunch hitting the hobbyist SBC market.

September 2, 2026 Corporate Research

Corporate Research: Space & Satellite Startups — ispace, Synspective, Astroscale

ispace (lunar transport), Synspective (small SAR satellite constellations), and Astroscale (on-orbit servicing / debris removal) — three Japan-born "NewSpace" companies, all listed on the Tokyo Stock Exchange Growth Market, compared across history, five fiscal years of results, products, technology strategy, facilities, and mid-term strategy. All three carry massive operating losses, yet each is capturing government and defense demand through a distinct path to viability.

August 29, 2026 Corporate Research

Corporate Research: Automobiles — Toyota, Honda, and Nissan

Toyota, founded in 1937; Honda, established in 1948; and Nissan, born out of a merger of several companies — comparing all three companies' histories, five years of financial results, production-network restructuring, FY2026/3's sharply divergent results (Toyota becoming the first Japanese company ever to top ¥50 trillion in revenue, Honda falling into an operating loss on EV-related charges, Nissan mid-restructuring and cutting roughly 20,000 jobs), and their race to commercialize solid-state batteries.

August 28, 2026 Sensors & Hardware

How Ultrasonic Sensors Work and Key Products — Bosch, Murata, Toyota ICS

An ultrasonic sensor measures a nearby obstacle's distance from the round-trip time of an ultrasonic pulse — the acoustic counterpart to LiDAR. It can see straight through what trips up optical sensors, transparent glass and black objects included, but its effective range tops out at a few meters. We work through bat-echolocation research, sonar's development in the First World War, the Bosch USS Gen 6's measured range, the Murata MA40S4S and MaxBotix modules that are staples of robotics, and the real-world example of Toyota's eight-sensor Intelligent Clearance Sonar — and how each of these changes what performance you actually get.

August 27, 2026 Corporate Research

Corporate Research: Telecom Infrastructure — NTT, KDDI, and SoftBank

NTT traces back to the 1985 privatization of Japan's public telecom monopoly; KDDI's roots run through DDI, founded in 1984; SoftBank pivoted from software distribution into a carrier through M&A. Comparing all three companies' five-year financial results, mobile subscriber share, AI/data-center investment, and their divergent technology bets on "what comes after radio" — NTT's optical-network vision IOWN, KDDI's Starlink partnership, and SoftBank's HAPS.

August 26, 2026 Technology Trends

Technology Trends in VLA (Vision-Language-Action)

Vision-Language-Action folds camera input and natural-language instructions into a single model that outputs robot actions directly. From RT-2 to OpenVLA to Physical Intelligence's π0 lineage, surveying the spread of a design philosophy that refuses to separate perception from control.

August 23, 2026 Corporate Research

Corporate Research: General Contractors — Kajima, Taisei, and Shimizu

Kajima, the first Japanese contractor to top ¥3 trillion in revenue; Taisei, which posted record profit; Shimizu, which bounced back from its first-ever operating loss to post two straight years of profit growth. Comparing all three companies' founding years (1804-1873), five years of financial results, frontier businesses from overseas construction to space development, and construction robotics.

August 22, 2026 Sensors & Hardware

How Radar Works and Key Products — Continental, Bosch, Honda SENSING

Millimeter-wave radar measures distance and relative velocity from the reflection of radio waves, making it the sensor most resistant to rain, fog, glare, and other adverse conditions that give optical sensors trouble. We work through how FMCW's beat frequency yields distance and velocity simultaneously, radar's technology lineage running back to Chain Home in the Second World War, Tesla's abandonment and later reinstatement of radar, the 4D imaging specs of the Continental ARS540, and the real-world example of Honda SENSING 360's five-radar 360-degree coverage — and how each of these changes the range/field-of-view/resolution trade-off.

August 21, 2026 Corporate Research

Corporate Research: Advanced Chemical Materials — Shin-Etsu Chemical and Toray

Shin-Etsu Chemical holds a leading world share in semiconductor-grade silicon wafers; Toray leads the world in carbon fiber and is the sole supplier of the Boeing 787's airframe structural material. Comparing two companies that each dominate the world with materials that are unglamorous but irreplaceable.

August 20, 2026 Technology Trends

Technology Trends in Navigation

From the classical pipeline of maps, costmaps, and path planning, to end-to-end approaches via reinforcement learning, to foundation models built on Vision-Language models. Surveying where autonomous mobile robot navigation stands today.

August 17, 2026 Corporate Research

Corporate Research: Steel — Nippon Steel and JFE Holdings

Nippon Steel completed its acquisition of US Steel in June 2026, putting it among the world's top crude steel producers, while JFE Holdings holds the

August 16, 2026 Sensors & Hardware

How GNSS Works and Key Products — u-blox, Trimble, Fixposition

RTK combines satellite positioning with correction data from a base station, shrinking the several-meter error of standalone GNSS positioning down to centimeter level. We work through how dual-frequency positioning cancels ionospheric delay, how u-blox's ZED-F9P drove low-cost RTK into the mainstream, Trimble RTX and Japan's own Michibiki (QZSS), and the real-world example of Kubota's nationwide network of 342 RTK base stations for farm machinery — and how each of these changes what positioning accuracy you actually get.

August 15, 2026 Corporate Research

Corporate Research: Precision Optics and Medical Devices — Canon, Nikon, and Olympus

Canon has held the

August 14, 2026 Technology Trends

Technology Trends in Local LLMs

Ollama's monthly download count grew 520x in three years. Surveying how the rapid rise of open-weight models and maturing quantization techniques are turning large language models into something that runs on a home PC.

August 11, 2026 Corporate Research

Corporate Research: HVAC — Daikin Industries and Mitsubishi Electric

Mitsubishi Electric's total company revenue is larger, but Daikin leads the world in air conditioning alone. Comparing the inverter air-conditioning technology Daikin spread worldwide against Mitsubishi Electric's "Kirigamine" line, differentiated by its own infrared sensor, "Move Eye."

August 10, 2026 Sensors & Hardware

How IMUs Work and Key Products — Xsens, Bosch, Analog Devices

An IMU pairs an accelerometer with a gyroscope to directly sense a vehicle's own translational acceleration and rotational rate. Unlike cameras or LiDAR, it depends on nothing external — but that self-containment comes with an inescapable fate: error accumulates over time (drift). We work through the MEMS gyroscope principle, Allan-variance noise analysis, the grading scale from consumer chips to navigation-grade modules, and Xsens's MTi series product strategy.

August 9, 2026 Corporate Research

Corporate Research: Machine Tools — DMG Mori, Okuma, and Yamazaki Mazak

DMG Mori and Okuma are public and disclose results; Yamazaki Mazak is private and discloses none. Comparing company history, financial trends over time, OSP (Okuma's self-developed CNC) against Yamazaki Mazak's strength in multi-tasking machines, facilities, and mid-term plans — including what the disclosure gap itself says about the industry.

August 8, 2026 Technology Trends

Technology Trends in Semantic Segmentation

From transformer-based SegFormer and Mask2Former to the Segment Anything family, which can carve out any object from a prompt. Surveying where segmentation stands as it moves away from fixed classes.

August 7, 2026 Corporate Research

Corporate Research: Industrial Robots — FANUC and Yaskawa Electric

FANUC, maker of the familiar "yellow robots," and Yaskawa Electric, which built the world's first all-electric industrial robot. FANUC leads on revenue, Yaskawa on headcount. From company history and five years of results to a comparison of CNC and servo/inverter businesses, "MOTOMAN NEXT" — an autonomous robot with a built-in NVIDIA GPU — facilities, and mid-term plans.

August 4, 2026 Sensors & Hardware

How Depth Cameras Work and Key Products — RealSense, Kinect, Orbbec

Active stereo projects a pattern with an infrared emitter and does stereo matching; structured light reads depth from how a known pattern distorts; time-of-flight reads distance directly from a phase shift — three coexisting approaches to depth cameras. We look at the principles behind each and real examples from the Intel RealSense D435i, Microsoft Kinect, Orbbec Femto Bolt, and iPhone TrueDepth, and trace how Israeli startup PrimeSense's technology gave birth to Kinect, got acquired by Apple, and was reborn as Face ID.

August 3, 2026 Corporate Research

Corporate Research: Semiconductor Manufacturing Equipment — Tokyo Electron and SCREEN Holdings

Tokyo Electron's revenue runs about 4x SCREEN Holdings'. A comparison of breadth versus depth — Tokyo Electron spans deposition, etching, and cleaning, while SCREEN holds a 34.7% world share concentrated in cleaning equipment alone — covering company history, five years of financial results, product lineups, facilities, and mid-term plans.

August 2, 2026 Technology Trends

Technology Trends in Object Detection

The YOLO family moving toward NMS-free designs, and transformer-based detectors like RF-DETR, which broke 60 mAP on COCO. Surveying the state of object detection in 2026, all the way to open-vocabulary detection driven by nothing but a text prompt.

August 1, 2026 Corporate Research

Corporate Research: Transportation Infrastructure — JR East and JR Central

JR East, posting record revenue for a fifth straight year, and JR Central, carrying the enormous Chuo Shinkansen maglev project. From a five-year scale comparison to the next-generation "E10 series" versus the Chuo Shinkansen maglev, a look at IC-card payment infrastructure (Suica vs. TOICA), and a map of both companies' development and manufacturing facilities.

July 29, 2026 Sensors & Hardware

How Stereo Cameras Work and Key Products — ZED 2i, Subaru EyeSight

A stereo camera triangulates distance from the disparity between two lenses, solving the absolute-scale problem that fundamentally limits monocular cameras. We look at real specs from the Stereolabs ZED 2i, Luxonis OAK-D, and e-con Systems TARA, and trace the baseline-length tradeoff through the evolution of Subaru's EyeSight, which has shipped on over 5 million vehicles since 2008 — plus the story of how EyeSight's creator left Subaru to found his own stereo-vision startup.

July 28, 2026 Corporate Research

Corporate Research: Electric Power Infrastructure — TEPCO and Kansai Electric Power

TEPCO Holdings leads on revenue; Kansai Electric leads on nuclear power. A comparison of two very different places in the nuclear-restart story — TEPCO restarting its first reactor since the Fukushima accident in April 2026, against Kansai Electric, which already has 4 of its 7 reactors running.

July 27, 2026 Technology Trends

Technology Trends in Visual-SLAM

From classical feature-point methods to deep-learning-based end-to-end estimation, and on to a reinvention of map representation via 3D Gaussian Splatting/NeRF. Surveying where Visual-SLAM — self-localization and mapping from cameras alone — stands today.

July 26, 2026 Corporate Research

Corporate Research: Gas Infrastructure — Tokyo Gas and Osaka Gas

Tokyo Gas serves the greater Tokyo region, Osaka Gas (Daigas Group) the Kansai region. From an 1885 founding tied to Shibusawa Eiichi versus an 1897 founding, through five years of earnings, LNG procurement and overseas energy, electricity retail and non-gas businesses, to the "methanation" race both companies are running to decarbonize city gas, plus a map of their development and manufacturing sites.

July 23, 2026 Sensors & Hardware

How Monocular Cameras Work and Key Products — Mobileye, Tesla, Continental

A monocular camera reads lane lines, signs, and obstacles through a single lens, gaining low cost and a small footprint at the price of a fundamental limitation — a single image alone cannot fix absolute distance. We look at real examples from Mobileye EyeQ6L, Tesla HW4, Continental MFC500, and comma.ai to see how each works around that constraint, and trace how a Hebrew University lab became Mobileye and was acquired by Intel for over $15 billion, plus Tesla's 2021 decision to "delete" radar from Tesla Vision.

July 22, 2026 Corporate Research

Corporate Research: Heavy Industry — Mitsubishi Heavy Industries, Kawasaki Heavy Industries, IHI

Japan's largest, Mitsubishi Heavy Industries; the most diversified, Kawasaki Heavy Industries; and IHI, strong in aircraft engines. From revenue scale to a world-leading gas turbine, a head-on rivalry in submarine construction, and how each company's mid-term plan responds to rising defense spending and a recovering aviation market.

July 21, 2026 Technology Trends

Technology Trends in LiDAR-SLAM

From the LOAM lineage to direct methods like FAST-LIO, and on to D-LIO, published in 2026. Surveying the evolution of LiDAR-and-IMU-based self-localization and mapping, set against newbot's own implementation.

July 20, 2026 Corporate Research

Corporate Research: Agricultural Machinery — Kubota vs. Yanmar

Kubota runs 2.5-3x Yanmar's revenue. From company history and a five-year scale comparison, to a large-tractor and combine-harvester spec showdown, autonomous driving technology, domestic facility footprints, and both companies' mid-term management plans.

July 19, 2026 Sensors & Hardware

How LiDAR Works and Key Products — Livox, Velodyne, Hesai

LiDAR measures distance from the round-trip time of light, from the rotating Velodyne Puck to the non-rotating Livox Mid-360S that drove costs down, to the Chinese players Hesai and RoboSense. We compare real specs from actual products in production — and trace the industry's real backstory, from the DARPA Grand Challenge to the DJI spinoff to the collapse of Volvo's deal with Luminar.

July 18, 2026 Corporate Research

Corporate Research: Construction Machinery — Komatsu vs. Hitachi Construction Machinery

Japan's

July 17, 2026 Technology Trends

Technology Trends in SLAM

From filter-based methods to graph optimization, and now to learning-based, AI-native approaches. Tracing the lineage of SLAM (simultaneous self-localization and mapping) and where current research stands.