{ "schema_version": "2.0", "company": "Pure Engineering LLC", "location": "Santa Barbara, California, USA", "founded": 1998, "consultancy_established": 2006, "llc_incorporated": 2014, "website": "https://www.pureengineering.com", "mirror_url": "https://pureengineering.gitlab.io/website/", "contact": "info@pureengineering.com", "task_order_builder_url": "https://www.pureengineering.com/create.html", "ai_interview_guide_url": "https://www.pureengineering.com/llms.txt", "summary": "Pure Engineering LLC in Santa Barbara, California provides custom embedded hardware design, multi-layer PCB layout, low-power RTOS and bare-metal firmware, wireless and RF engineering, thermal and optical sensor integration, native Android/AOSP and iOS mobile applications, high-efficiency cloud backends, and in-house CNC fabrication from initial concept and feasibility through mass-production transfer.", "metrics": { "years_active": 28, "engineering_history_span": "1998-2026", "custom_pcbs_delivered": 300, "field_units_deployed": 50000, "firmware_and_software_codebases": 345, "mobile_app_downloads_google_play": 100000, "cloud_concurrent_devices_per_server": 1000000, "minimum_constrained_rtos_ram_bytes": 4096, "high_voltage_afe_bias_volts_max": 1000, "switching_regulator_current_amps_max": 10, "uwb_indoor_rtls_accuracy_cm": 10, "portfolio_case_studies_published": 64, "open_source_reference_pages_published": 76 }, "capabilities": [ "Low-Power Hardware Design and Multi-Layer PCB Layout (0201 Passives, Fine-Pitch BGA, Controlled-Impedance RF, High-Speed FPGA/CPLD)", "Low-Power Embedded Firmware (Zephyr RTOS, FreeRTOS, Contiki OS, Bare-Metal C/C++/Assembly in <4 KB RAM, Linux BSPs, uA Sleep, Solar MPPT)", "Android, Embedded AOSP Custom ROMs, and iOS Mobile Applications (BLE, UWB, Wi-Fi, NFC, USB UVC/CDC/HID Device Control, 100,000+ Play Store Downloads)", "Cloud Backends ('Server Code Like Firmware' Supporting up to 1,000,000 Concurrent Devices per Server via MQTT, MQTT-SN, nanopb, gRPC, REST, Graph & Time-Series DBs)", "Secure IoT and RF Wireless Connectivity (BLE, Direction Finding, IEEE 802.15.4 UWB ToF, Thread, Zigbee, Wi-Fi, Sub-GHz LoRa, LTE-M, NB-IoT, Satellite)", "Radiometric Thermal Imaging (FLIR Lepton, Boson, PureThermal USB UVC, Thermopile Arrays) and Optical Sensing (MEMS Spectrometers, Time-of-Flight Laser Ranging)", "Radiation Detection Electronics, Low-Noise Analog Front-Ends (TIAs), and Regulated High-Voltage Power Supplies (>1,000 V at uA Quiescent Current)", "Software Defined Radio (SDR) Transceivers, Ground Penetrating Radar (GPR), and Acoustic Sonar Signal Processing & Target Classification", "Design for Manufacturing (DFM), Automated Pogo-Pin Factory Test Fixtures, and Contract Manufacturing Transfer", "In-House 3-Axis and 4-Axis CNC Machining, Mechanical CAD, 3D Printing, and Laser Engraving" ], "company_overview": { "history": "Our engineers began designing custom embedded systems in 1998, established Pure Engineering as a design consultancy in 2006, and incorporated Pure Engineering LLC in 2014 in Santa Barbara, California. Across 28 years and more than 300 custom PCB layouts, we have partnered with commercial, industrial, and scientific organizations to take complex hardware and software products from early feasibility to volume production.", "history_milestones": [ { "period": "1998–2005", "focus": "Foundational Embedded, DSP, Radar & Control Systems", "summary": "Early custom microcontroller, FPGA/CPLD, automotive/industrial CAN, acoustic sonar, and Ground Penetrating Radar (GPR) signal-processing platforms, including published ITC 2004 subsurface radar research." }, { "period": "2006–2013", "focus": "Pure Engineering Consultancy — Low-Power Wireless, Mesh & Instrumentation", "summary": "Formation of Pure Engineering as a design and consulting firm delivering microwatt battery-operated sensors, 6LoWPAN/Contiki wireless mesh networks, solar-harvesting nodes, and high-voltage analog front-ends." }, { "period": "2014–2019", "focus": "Pure Engineering LLC — Open-Source Thermal Imaging, PUREmodules & Mobile/Cloud IoT", "summary": "Incorporation of Pure Engineering LLC in Santa Barbara; launch of the first open-source FLIR Lepton breakout board, PureThermal 1 and PureThermal Mini USB UVC thermal modules, the PUREmodules 62-mil card-edge ecosystem, UWB indoor RTLS, and 100,000+ download mobile apps." }, { "period": "2020–2026", "focus": "Multi-Radio Cellular/Satellite IoT, Edge Vision, Cloud & Production Transfer", "summary": "Full-stack product engineering combining Zephyr RTOS, multi-radio BLE/UWB/LoRa/LTE-M hardware, thermal vision, radiation and gas sensor interfaces, high-concurrency cloud servers, and factory test fixtures." } ], "engagement_lifecycle": [ "1. Strategic Planning & Feasibility: Assessing technology suitability, system architecture, and processor/sensor selection.", "2. Proof of Concept & Prototyping: Building proof-of-concept hardware and working prototypes to test functionality before manufacturing.", "3. Custom Hardware & Enclosure Design: Schematic capture, multi-layer PCB layout, in-house soldering/assembly, and CNC/3D-printed enclosures.", "4. Firmware, Mobile & Cloud Development: Embedded C/C++/RTOS firmware, Android/AOSP and iOS apps, and high-efficiency cloud servers.", "5. Production Transfer: Design review, automated test fixtures, and contract manufacturer handoff." ], "in_house_engineering_lab": [ "PCB design and layout, 0201 passive and BGA soldering and rework, prototype assembly, and hardware/software bring-up", "3-axis and 4-axis CNC machining, 3D printing, and laser engraving for custom enclosures and mechanical prototypes", "Custom pogo-pin test fixtures and programming/verification jigs for transitioning prototypes into manufacturing" ] }, "service_tracks": [ { "key": "hardware", "title": "Custom PCB & Hardware Engineering", "task_order_url": "https://www.pureengineering.com/create.html?service=hardware", "summary": "Schematic capture, multi-layer PCB layout (0201, fine-pitch BGA, controlled-impedance RF, high-speed FPGA/CPLD), high-efficiency switching regulators, solar MPPT, and precision analog front-ends." }, { "key": "firmware", "title": "Low-Power Embedded Firmware & RTOS", "task_order_url": "https://www.pureengineering.com/create.html?service=firmware", "summary": "Production C, C++, and assembly across Arm Cortex-M/A, RISC-V, STM32, Nordic nRF, ESP32, MSP430, AVR, and PIC using Zephyr RTOS, FreeRTOS, Contiki, Embedded Linux, or <4 KB RAM bare-metal builds." }, { "key": "app", "title": "Android, AOSP & iOS Mobile Applications", "task_order_url": "https://www.pureengineering.com/create.html?service=app", "summary": "Native Android and iOS apps for BLE, UWB, Wi-Fi, NFC, and USB hardware control (100,000+ Google Play downloads) plus custom Embedded Android (AOSP) ROMs and system services." }, { "key": "cloud", "title": "Cloud Backends, APIs & Fleet Telemetry", "task_order_url": "https://www.pureengineering.com/create.html?service=cloud", "summary": "High-efficiency server backends engineered with embedded discipline to support up to 1,000,000 concurrent devices per server over MQTT, MQTT-SN, nanopb, gRPC, and REST." }, { "key": "simulation", "title": "Hardware-in-the-Loop Simulation & Production Test Fixtures", "task_order_url": "https://www.pureengineering.com/create.html?service=simulation", "summary": "MATLAB/Python physical simulations, virtualized HIL testbeds, automated pogo-pin production test fixtures, and contract manufacturing transfer." }, { "key": "rf", "title": "RF, Wireless & Localization Systems", "task_order_url": "https://www.pureengineering.com/create.html?service=rf", "summary": "BLE, AoA/AoD direction finding, IEEE 802.15.4 UWB Time-of-Flight (10 cm accuracy), Thread/Zigbee/6LoWPAN, Sub-GHz LoRa, Cellular LTE-M/NB-IoT, satellite, and custom SDR." }, { "key": "mechanical", "title": "In-House 3-Axis/4-Axis CNC, CAD & Enclosures", "task_order_url": "https://www.pureengineering.com/create.html?service=mechanical", "summary": "Mechanical CAD, in-house 3-axis and 4-axis CNC milling, 3D printing, laser engraving, thermal management, and ruggedized enclosure fabrication." } ], "about_core_focus_areas": [ { "id": "01.1", "title": "Internet of Things (IoT) & Low-Power Systems", "highlights": [ "Battery-operated and solar-harvesting IoT sensor nodes engineered to run for multiple years in the field without maintenance.", "Compact, encrypted telemetry pipelines using MQTT, MQTT-SN, and Protocol Buffers (nanopb) to transport sensor data reliably over constrained links.", "Creator of the open PUREmodules 62-mil card-edge standard for rapid, solderless wireless sensor prototyping and production." ] }, { "id": "01.2", "title": "Bluetooth Low Energy (BLE) & Multi-Radio SoCs", "highlights": [ "Microwatt-average BLE sensor designs that enable multi-year battery life from a single coin cell.", "Custom BLE GATT profiles, protocol stack optimization, and smartphone-connected sensor firmware on commercial wireless microcontrollers.", "Broad production experience across Nordic nRF52/nRF53/nRF54, TI CC26xx, Cypress PSoC 4 BLE, ST BlueNRG, Dialog SmartBond, Qualcomm QCC711/QCC744, and Qorvo DW1000/DW3000 UWB." ] }, { "id": "01.3", "title": "Thermal Sensor Integration (FLIR Lepton, Boson & PureThermal)", "highlights": [ "Brought the first open-source FLIR Lepton breakout board to market for capturing VoSPI thermal video on embedded microcontrollers.", "Designed the PureThermal 1 and PureThermal Mini USB UVC carrier boards for driverless 16-bit radiometric thermal video streaming.", "Shipped thousands of thermal imaging modules and maintains open-source firmware and cross-platform host libraries across Linux, Windows, macOS, and Android." ] }, { "id": "01.4", "title": "Radiation Sensors & High-Voltage Front-Ends", "highlights": [ "Custom analog front-end (AFE) electronics and digital pulse processing for scintillation crystals, photodiodes, and solid-state detectors.", "Low-noise transimpedance amplifiers (TIA) and regulated bias supplies exceeding 1,000 V with micro-amp quiescent current.", "Mobile-connected detector interfaces, synthetic training simulators, and operator applications." ] }, { "id": "01.5", "title": "Spectrometer & Optical Sensor Integration", "highlights": [ "Compact breakout hardware, microcontroller capture firmware, and host software for Hamamatsu C12666MA and C12880MA MEMS micro-spectrometers.", "Thermopile and optical ranging designs using Panasonic Grid-EYE (AMG8833) arrays and ST FlightSense (VL53L0X, VL53L1X, VL53L5CX) Time-of-Flight laser sensors.", "Biometric and gesture optical interfaces using Silicon Labs Si1153 and Si1170 optical sensors." ] }, { "id": "01.6", "title": "Android, AOSP & iOS Mobile Application Development", "highlights": [ "Over 100,000 downloads on the Google Play Store across hardware control, thermal imaging, and wireless telemetry applications.", "Native Android and iOS applications with custom user interfaces for BLE, UWB, Wi-Fi, NFC, and USB UVC/CDC hardware peripherals.", "Android Open Source Project (AOSP) customization for embedded Android ROMs, kernel drivers, and dedicated operator tablets." ] }, { "id": "01.7", "title": "Software Defined Radio (SDR) Hardware & Firmware", "highlights": [ "Custom Software Defined Radio (SDR) hardware design and embedded software and DSP development to run them.", "PCB layout and circuit design addressing noise, cross-talk, signal loss, and impedance matching critical to a working radio system." ] }, { "id": "01.8", "title": "Ground Penetrating Radar (GPR) & Sonar Signal Processing", "highlights": [ "Published research on Ground Penetrating Radar (GPR) and custom radar testbeds (ITC 2004 paper: http://arizona.openrepository.com/arizona/bitstream/10150/604925/1/ITC_2004_04-02-02.pdf).", "Electromagnetic and acoustic image reconstruction algorithms for subsurface GPR imaging and underwater sonar image formation.", "Automated DSP target identification and classification from unknown target signature responses." ] } ], "fullstack_architecture": { "embedded_development_backend_and_toolchains": { "compilers_and_build_systems": [ "GCC and CMake cross-compilation toolchains on Linux, Windows, and macOS hosts", "JTAG and SWD hardware debugging via GDB and OpenOCD", "Git and SVN revision control, automated build pipelines, and requirement-to-test traceability" ], "target_processor_families": [ "Arm Cortex-M0, Cortex-M0+, Cortex-M3, Cortex-M4/M4F, and Cortex-M33", "Arm Cortex-A8, Cortex-A9, and Cortex-A53 application processors", "RISC-V wireless and edge-compute cores", "ST STM32, Nordic nRF5x/nRF91, TI MSP430/CC26xx, Microchip/Atmel AVR/AVR32/Xmega/SAMD/PIC, Espressif ESP32, and Cypress PSoC" ], "languages": [ "C", "C++", "Assembly", "Verilog / VHDL", "Python", "MATLAB" ] }, "cloud_backend_and_cross_platform_ui": { "philosophy": "Server Code Like Firmware — cloud backend software written with embedded resource discipline so a single server instance supports up to 1,000,000 concurrent devices.", "telemetry_and_api_protocols": [ "Compact, encrypted MQTT, MQTT-SN, CoAP, and Protocol Buffers (nanopb) device streams", "Standard gRPC, REST, GraphQL, and WebSocket APIs for client applications" ], "data_and_deployment": [ "Graph databases for linear-scaling relationship queries paired with time-series telemetry stores", "Docker container deployment with load balancing on bare metal, AWS, Microsoft Azure, or Google Cloud" ], "cross_platform_frontends": [ "Native and cross-platform operator interfaces for Android, iOS, Windows, macOS, Linux, and modern web browsers" ] } }, "key_engineering_skills": { "analog_power_rf_and_high_density_pcb_hardware": [ "High-density multi-layer PCB layout and routing with 0201 passives and fine-pitch BGA packages", "High-speed FPGA and CPLD schematics, placement, differential-pair routing, and trace length matching", "High-power (10 A+) switching regulator design and solar maximum power point tracking (MPPT)", "High-voltage power supplies exceeding 1,000 V for radiation detectors and specialized transducers", "Low-noise transimpedance amplifier (TIA) and precision analog front-end circuit design", "Microwatt wireless sensor nodes running strictly from harvested ambient energy or coin cells", "End-to-end PCB design, SMT soldering and rework, CPLD/FPGA logic, 3-axis/4-axis CNC machining, and automated test fixtures" ], "embedded_firmware_rtos_drivers_and_system_software": [ "Embedded software in C, C++, and assembly on Arm Cortex-M/A, RISC-V, STM32, Nordic nRF, AVR/Xmega, PIC, ESP32, MSP430, and PSoC", "Constrained-memory firmware running both the operating system and application in under 4 KB of RAM", "Preemptive RTOS architectures (Zephyr RTOS, FreeRTOS, Contiki) using message queues and micro-amp sleep states", "Power-optimized hardware drivers, custom Bluetooth Low Energy (BLE) stacks, and low-level 802.11 Wi-Fi chipset drivers", "Sensor drivers for GPS/GNSS, IMU (accelerometer, gyroscope, magnetometer), pressure, humidity, gas, thermal, optical ToF, RF transceivers, SPI flash, RTCs, ADCs, and DACs", "Bus and system drivers for UART, CAN, I2C, SPI, SDIO, High-Speed USB 2.0 / USB 3.0, timers, CPLDs, memory-mapped I/O, DMA, and IPC", "DSP algorithm development, MATLAB and Python physical simulations, and hardware-in-the-loop (HIL) verification", "Android application development, custom BLE sensor UIs, and Android AOSP ROM and toolchain customization" ] }, "consulting_services": { "hardware_rf_and_manufacturing_deliverables": [ "Circuit schematic capture, independent schematic design review, multi-layer PCB layout, and DFM layout review", "Microcontroller, wireless SoC, DSP, and FPGA selection and complete system architecture specification", "Wireless sensor hardware development across BLE, Wi-Fi, Zigbee, Thread, UWB, LoRa, Cellular IoT (LTE-M / NB-IoT), and custom ISM bands", "High-Speed USB 2.0 and USB 3.0 device hardware and driverless USB UVC, CDC, and HID interface design", "In-house 3-axis and 4-axis CNC enclosure machining, 3D printing, laser engraving, and pogo-pin factory test fixtures" ], "firmware_mobile_os_porting_and_toolchain_deliverables": [ "Bare-metal and RTOS firmware development, board bring-up, and full hardware/software integration", "RTOS evaluation and selection, plus BSP, secure bootloader (MCUboot / DFU), Linux, and RTOS porting to new custom hardware", "Signal processing and control application development for microcontrollers and DSP devices", "Native Android and iOS mobile application development plus embedded Android (AOSP) porting and ROM modifications", "Development toolchain selection, build automation, and Git/SVN revision-control setup and maintenance" ] }, "supported_silicon_and_components": { "microcontroller_and_soc_families": [ "Nordic Semiconductor nRF51, nRF52, nRF53, nRF54, and nRF91 cellular SiP series", "STMicroelectronics STM32 (F0, F1, F4, L0, L4, U5, H7, WB, WL) and BlueNRG series", "Texas Instruments MSP430, CC26xx BLE/multi-standard, CC13xx Sub-GHz, and Sitara Cortex-A series", "Microchip / Atmel SAMD, SAME, SAMA5, AVR, AVR32, Xmega, and PIC16/18/24/32 series", "Espressif ESP8266 and ESP32 (ESP32, ESP32-S, ESP32-C) Wi-Fi/BLE series", "Qualcomm QCC711 BLE and QCC744 Wi-Fi 6 / BLE / Thread combo SoCs", "Infineon / Cypress PSoC 4 BLE & PSoC 5, Dialog SmartBond, Analog Devices Blackfin DSP, and Xilinx/Lattice FPGAs & CPLDs" ], "wireless_and_rf_technologies": [ "Bluetooth Low Energy (BLE 4.x / 5.x / 5.4 / 6.0, AoA/AoD Direction Finding, IPv6 over BLE / RFC 7668 IPSP)", "Ultra-Wideband (IEEE 802.15.4a/z UWB Time-of-Flight, TDoA, and PDoA indoor localization)", "IEEE 802.15.4 Mesh (Thread, Zigbee, Matter, 6LoWPAN, Contiki RPL, Wirepas)", "Sub-GHz Long-Range (LoRa, LoRaWAN, GFSK/FSK across ISM bands)", "Cellular & Satellite IoT (LTE-M, NB-IoT, DECT NR+, 3GPP NTN satellite, and Iridium SBD)", "Wi-Fi (802.11b/g/n/ac/ax), NFC/RFID, and custom Software Defined Radio (SDR) transceivers" ], "sensor_and_instrumentation_categories": [ "Long-Wave Infrared (LWIR) Thermal Imaging (FLIR Lepton, FLIR Boson, and thermopile arrays)", "Optical Ranging & Spectroscopy (MEMS micro-spectrometers, single-zone and multizone Time-of-Flight laser ranging)", "Environmental & Gas Sensing (Photoacoustic CO2, MOX VOC/tri-gas, electrochemical toxic gas potentiostats, capacitive soil moisture)", "Radiation & High-Voltage Instrumentation (Scintillation and solid-state gamma/neutron front-ends, >1,000 V bias supplies)", "Biometric, Inertial & Acoustic (Optical PPG heart-rate/SpO2, MEMS accelerometers/IMUs, barometric altimeters, ultrasonic transducers)" ] }, "communications_and_bus_protocols": { "wireless_protocols": [ "BLE", "UWB (802.15.4a/z)", "Thread / Zigbee / 802.15.4", "6LoWPAN / IPSP", "LoRa / LoRaWAN", "LTE-M / NB-IoT", "DECT NR+", "Wi-Fi", "NFC" ], "wired_and_board_buses": [ "USB 2.0 / 3.0 (UVC, CDC, HID, DFU)", "SPI / QSPI / VoSPI", "I2C / I3C / CCI", "UART / RS-232 / RS-485 Modbus", "CAN / CAN FD", "Ethernet / PoE", "I2S / PDM", "SDIO", "PUREmodules 62-mil Card Edge" ], "cloud_and_application_protocols": [ "MQTT / MQTT-SN", "CoAP", "Protocol Buffers (nanopb)", "gRPC", "REST / JSON", "GraphQL", "TLS / DTLS / mTLS" ] }, "partners_and_publications": { "partners_page_url": "https://www.pureengineering.com/partners.html", "industry_partners": [ { "name": "STMicroelectronics", "relationship": "Authorized Partner for STM32 microcontrollers, FlightSense Time-of-Flight breakouts, and MEMS sensor integration." }, { "name": "GroupGets", "relationship": "Manufacturing and distribution partner for PureThermal 1, PureThermal Mini, FLIR Lepton breakouts, and PUREmodules hardware." }, { "name": "DigiKey", "relationship": "Global distributor carrying Pure Engineering open-source breakouts, PureThermal camera modules, and PUREmodules kits." } ], "publications": [ { "title": "Ground Penetrating Radar (GPR) Subsurface Imaging and Target Classification Research (ITC 2004)", "url": "http://arizona.openrepository.com/arizona/bitstream/10150/604925/1/ITC_2004_04-02-02.pdf" } ] }, "engineering_track_record_1998_to_2026": { "portfolio_url": "https://www.pureengineering.com/portfolio.html", "total_documented_systems": 64, "domains_covered": [ { "domain": "RF, Wireless & Localization", "experience_summary": "UWB Time-of-Flight indoor RTLS (10 cm accuracy), multi-radio cellular/BLE/Sub-GHz asset and railcar telemetry, solar weatherproof beacons, and wideband SDR transceivers." }, { "domain": "Thermal, Optical & Spectroscopy", "experience_summary": "Driverless USB UVC thermal camera carriers (PureThermal), FLIR Lepton and Boson vision boards, MEMS micro-spectrometer breakouts, and multizone Time-of-Flight depth sensors." }, { "domain": "Low-Power IoT, Wearables & Environmental Sensing", "experience_summary": "Coin-cell and solar-harvesting wireless sensor nodes, multi-gas and soil moisture probes, first-responder biotelemetry wearables, and the modular PUREmodules ecosystem." }, { "domain": "Radiation, Radar & Precision Instrumentation", "experience_summary": "High-voltage (>1,000 V) bias supplies and low-noise TIAs for radiation detectors, Ground Penetrating Radar (GPR), underwater sonar DSP, and industrial control hardware." }, { "domain": "Mobile Apps, Embedded AOSP, Cloud & Factory Test", "experience_summary": "Native iOS/Android hardware control apps (100,000+ downloads), custom AOSP ROMs, a self-hosted device fleet platform that also runs behind customer firewalls or on one laptop, an indoor asset-location server and web portal, high-concurrency MQTT/gRPC cloud backends, and automated pogo-pin production test rigs." } ], "eras_summary": [ { "era": "2026 Active Production Systems", "count": 11, "focus": "Self-hosted device fleet platform, indoor asset-location portal and apps, NFC access apps, multi-radio wearables, solar railcar telemetry, edge-AI thermal vision, radiation mobile interfaces, and automated manufacturing fixtures." }, { "era": "2023–2025 Systems", "count": 10, "focus": "Cellular/satellite IoT trackers, industrial gas and water telemetry, UWB/BLE localization, and cross-platform cloud portals." }, { "era": "2020–2022 Systems", "count": 15, "focus": "Multi-tenant IoT application platform, peer-to-peer telemetry replication, field sighting and messaging apps, low-power wireless sensors, thermal imaging carriers, biometric wearables, and embedded Linux/RTOS gateways." }, { "era": "2017–2019 Systems", "count": 10, "focus": "PUREmodules card-edge ecosystem, PureThermal USB UVC modules, Time-of-Flight and spectrometer breakouts, and UWB RTLS." }, { "era": "2013–2016 Systems", "count": 9, "focus": "First-to-market FLIR Lepton breakout boards, coin-cell BLE sensors, solar energy harvesting, and Android/iOS BLE applications." }, { "era": "1998–2012 Systems", "count": 9, "focus": "Ground Penetrating Radar (GPR), underwater acoustic sonar, DSP/FPGA instrumentation, automotive/industrial CAN, and early wireless mesh." } ] }, "task_order_and_ai_interview_protocol": { "guide_url": "https://www.pureengineering.com/llms.txt", "builder_url": "https://www.pureengineering.com/create.html", "submission_email": "info@pureengineering.com", "file_naming_convention": "project_.json", "schema_version": "1.0", "five_interview_topics": [ "1. Problem to Solve and Root Cause", "2. System Context and Architecture", "3. Goals and Success Metrics (G-1, G-2, ...)", "4. Testable Engineering Requirements (REQ-1, REQ-2, ...)", "5. Physical, Power, RF, Regulatory, Volume, and Schedule Constraints" ] }, "pages": [ "index.html", "portfolio.html", "projects.html", "create.html", "about.html", "contact.html", "partners.html", "llms.txt", "capabilities.json", "sitemap.xml" ], "public_reference_projects": [ { "section": "01 // Thermal Imaging, Spectroscopy & Optical Ranging", "count": 12, "projects": [ { "title": "PureThermal Mini", "path": "/project\u0073/purethermalmini", "url": "https://www.pureengineering.com/project\u0073/purethermalmini", "summary": "Compact STM32F412 USB UVC smart I/O carrier for FLIR Lepton 2.x and 3.x LWIR thermal cores." }, { "title": "PureThermal 1", "path": "/project\u0073/purethermal1", "url": "https://www.pureengineering.com/project\u0073/purethermal1", "summary": "Open-source STM32F411 development board with FLIR Lepton socket, TI TMP007 reference thermopile, and USB UVC firmware." }, { "title": "FLIR Lepton Breakout Board", "path": "/project\u0073/lepton", "url": "https://www.pureengineering.com/project\u0073/lepton", "summary": "25 x 24 mm LWIR breakout with 2.8 V / 1.2 V LDOs, 25 MHz clock, and Raspberry Pi / Nucleo SDK." }, { "title": "FLIR Lepton Pocket Thermal Camera", "path": "/project\u0073/leptondemo", "url": "https://www.pureengineering.com/project\u0073/leptondemo", "summary": "Handheld SAMD21G18A thermal imager with 96x64 SSD1331 color OLED and rechargeable LiPo battery." }, { "title": "Hamamatsu C12666MA / C12880MA", "path": "/project\u0073/c12666ma", "url": "https://www.pureengineering.com/project\u0073/c12666ma", "summary": "Hermetic MEMS grating micro-spectrometer breakout (340 to 850 nm) and Arduino capture code." }, { "title": "Panasonic Grid-EYE Breakout", "path": "/project\u0073/grid-eye-breakout", "url": "https://www.pureengineering.com/project\u0073/grid-eye-breakout", "summary": "64-pixel 8x8 MEMS thermopile array on Arduino / Nucleo and 62-mil PUREmodules card-edge connectors." }, { "title": "ST VL53L0X 2m ToF Breakout", "path": "/project\u0073/vl53l0-breakout", "url": "https://www.pureengineering.com/project\u0073/vl53l0-breakout", "summary": "Eye-safe 940 nm VCSEL Time-of-Flight laser distance sensor with I2C header and PUREmodules edge fingers." }, { "title": "ST VL53L1X 4m ToF Sensor", "path": "/project\u0073/vl53l1", "url": "https://www.pureengineering.com/project\u0073/vl53l1", "summary": "Third-generation FlightSense 940 nm laser-ranging architecture with programmable 16x16 SPAD ROI up to 4 m." }, { "title": "ST VL53L1X Breakout Board", "path": "/project\u0073/vl53l1-breakout", "url": "https://www.pureengineering.com/project\u0073/vl53l1-breakout", "summary": "Dual-footprint 4 m Time-of-Flight carrier with 3 V to 5 V regulator for Arduino, Nucleo, and nRF52 CoreModules." }, { "title": "ST VL53L5CX 64-Zone ToF", "path": "/project\u0073/vl53l5", "url": "https://www.pureengineering.com/project\u0073/vl53l5", "summary": "Wide 61-degree FoV 8x8 multizone Time-of-Flight depth matrix for 3D room mapping and robotics obstacle detection." }, { "title": "Silicon Labs Si1153 Breakout", "path": "/project\u0073/si1153-breakout", "url": "https://www.pureengineering.com/project\u0073/si1153-breakout", "summary": "Multi-channel ambient light, infrared proximity, and 3D gesture recognition sensor on a PUREmodules card edge." }, { "title": "Silicon Labs Si1170 Breakout", "path": "/project\u0073/si1170-breakout", "url": "https://www.pureengineering.com/project\u0073/si1170-breakout", "summary": "Continuous wrist photoplethysmography (PPG) optical heart-rate and pulse oximetry sensor carrier." } ] }, { "section": "02 // RF Localization, Cellular IoT & Wireless Platforms", "count": 29, "projects": [ { "title": "Indoor Real-Time Location (UWB RTLS)", "path": "/project\u0073/indoorlocation", "url": "https://www.pureengineering.com/project\u0073/indoorlocation", "summary": "IEEE 802.15.4 UWB Time-of-Flight and BLE indoor positioning to 10 cm accuracy." }, { "title": "UWB Anchor & Wi-Fi RTLS Bridge", "path": "/project\u0073/uwbanchor", "url": "https://www.pureengineering.com/project\u0073/uwbanchor", "summary": "Fixed ceiling/wall UWB Time-of-Flight anchor node with Wi-Fi backhaul to the trilateration engine." }, { "title": "Qorvo DW3000 UWB Transceiver", "path": "/project\u0073/dw3000", "url": "https://www.pureengineering.com/project\u0073/dw3000", "summary": "IEEE 802.15.4z Ch 5 & Ch 9 UWB transceiver reference with Scrambled Timestamp Sequence (STS) and PDoA." }, { "title": "Pure RTLS Mesh Network", "path": "/project\u0073/rtls-mesh", "url": "https://www.pureengineering.com/project\u0073/rtls-mesh", "summary": "Self-healing multi-hop wireless location mesh forwarding UWB Time-of-Flight vectors without per-anchor Ethernet drops." }, { "title": "PURE locate Platform", "path": "/project\u0073/pure-locate", "url": "https://www.pureengineering.com/project\u0073/pure-locate", "summary": "Modular wireless location platform combining UWB Time-of-Flight, BLE proximity, and motion-gated battery tags." }, { "title": "PURE Asset Tracker", "path": "/project\u0073/pure-asset-tracker", "url": "https://www.pureengineering.com/project\u0073/pure-asset-tracker", "summary": "Multi-modal outdoor/indoor logistics tracker blending GPS, Wi-Fi BSSID scanning, BLE beacons, and LTE-M / NB-IoT backhaul." }, { "title": "PURE IoT Gateway", "path": "/project\u0073/pure-iot-gateway", "url": "https://www.pureengineering.com/project\u0073/pure-iot-gateway", "summary": "Multi-radio edge gateway bridging BLE, 802.15.4, and Sub-GHz sensor nodes to Ethernet, Wi-Fi, and cellular cloud endpoints." }, { "title": "IPv6 over BLE (IPSP) Gateway", "path": "/project\u0073/ipsp-gateway", "url": "https://www.pureengineering.com/project\u0073/ipsp-gateway", "summary": "RFC 7668 6LoWPAN over Bluetooth Low Energy border router assigning native IPv6 addresses to BLE sensor nodes." }, { "title": "Solar Weatherproof Geo-iBeacon", "path": "/project\u0073/geo-ibeacon", "url": "https://www.pureengineering.com/project\u0073/geo-ibeacon", "summary": "Outdoor solar-charged Bluetooth beacon with onboard GPS synchronization for autonomous geolocation broadcasts." }, { "title": "FireBeacon Responder Telemetry", "path": "/project\u0073/firebeacon", "url": "https://www.pureengineering.com/project\u0073/firebeacon", "summary": "Ruggedized environmental and incident telemetry beacon for emergency responders and wildfire monitoring." }, { "title": "PUREmodules nRF52832 Core", "path": "/project\u0073/nrf52-core-module", "url": "https://www.pureengineering.com/project\u0073/nrf52-core-module", "summary": "Coin-cell Bluetooth 5 processor module with Arm Cortex-M4F, LIS2DE12 accelerometer, and 62-mil card-edge sockets." }, { "title": "Nordic nRF52833 Direction Finding", "path": "/project\u0073/nrf52833", "url": "https://www.pureengineering.com/project\u0073/nrf52833", "summary": "+8 dBm Bluetooth 5.1 SoC with Angle-of-Arrival (AoA) / Angle-of-Departure (AoD) I/Q sampling up to +105 °C." }, { "title": "nRF52 Secure BLE DFU Bootloader", "path": "/project\u0073/nrf52_secure_bootloader", "url": "https://www.pureengineering.com/project\u0073/nrf52_secure_bootloader", "summary": "Step-by-step guide to ECDSA P-256 cryptographic key generation and signed over-the-air firmware updates." }, { "title": "Nordic nRF54L Series SoC", "path": "/project\u0073/nrf54", "url": "https://www.pureengineering.com/project\u0073/nrf54", "summary": "22 nm 128 MHz Cortex-M33 wireless SoC with RISC-V coprocessor, non-volatile RRAM, and Bluetooth Channel Sounding." }, { "title": "Nordic nRF54H20 Multi-Core SoC", "path": "/project\u0073/nrf54h", "url": "https://www.pureengineering.com/project\u0073/nrf54h", "summary": "Dual 320 MHz Cortex-M33 and dual RISC-V wireless SoC with 2 MB embedded MRAM and High-Speed USB." }, { "title": "Nordic nRF9160 Cellular SiP", "path": "/project\u0073/nrf9160", "url": "https://www.pureengineering.com/project\u0073/nrf9160", "summary": "Compact 10 x 16 mm LTE-M, NB-IoT, and GPS System-in-Package with 64 MHz Cortex-M33 and Arm TrustZone." }, { "title": "Cellular & DECT NR+ (nRF9260)", "path": "/project\u0073/nrf9260", "url": "https://www.pureengineering.com/project\u0073/nrf9260", "summary": "Integrated cellular LTE-M / NB-IoT and DECT NR+ 5G mesh System-in-Package architecture." }, { "title": "Cellular & Satellite IoT (nRF9280)", "path": "/project\u0073/nrf9280", "url": "https://www.pureengineering.com/project\u0073/nrf9280", "summary": "Integrated terrestrial LTE-M / NB-IoT and 3GPP non-terrestrial satellite (NTN) IoT hardware architecture." }, { "title": "TI CC2650 2.4 GHz Core Module", "path": "/project\u0073/cc2650-core", "url": "https://www.pureengineering.com/project\u0073/cc2650-core", "summary": "Multi-standard BLE and IEEE 802.15.4 / Zigbee / 6LoWPAN wireless MCU with low-power Sensor Controller Engine." }, { "title": "Qualcomm QCC711 Tri-Core BLE SoC", "path": "/project\u0073/qcc711", "url": "https://www.pureengineering.com/project\u0073/qcc711", "summary": "Bluetooth 5.4 Low Energy SoC combining an Arm Cortex-M3 application core, RISC-V security core, and M0 link layer." }, { "title": "Qualcomm QCC744 Wi-Fi 6 & Matter", "path": "/project\u0073/qcc744", "url": "https://www.pureengineering.com/project\u0073/qcc744", "summary": "Tri-radio Wi-Fi 6 (802.11ax), Bluetooth 5.4, and IEEE 802.15.4 Thread/Zigbee SoC on a 320 MHz RISC-V core." }, { "title": "SIMCom SIM7080G Cat-M / NB-IoT", "path": "/project\u0073/sim7080g", "url": "https://www.pureengineering.com/project\u0073/sim7080g", "summary": "Global multi-band LTE Cat-M1 / NB2 cellular module with integrated multi-constellation GNSS receiver." }, { "title": "ST STM32WL Sub-GHz LoRa MCU", "path": "/project\u0073/stm32ww", "url": "https://www.pureengineering.com/project\u0073/stm32ww", "summary": "Single-die Sub-GHz wireless microcontroller integrating Arm Cortex-M4/M0+ cores and a Semtech SX126x LoRa radio." }, { "title": "Industrial IoT (IIoT) Architecture", "path": "/project\u0073/iiot", "url": "https://www.pureengineering.com/project\u0073/iiot", "summary": "Ruggedized plant-floor telemetry combining isolated 4-20 mA / RS-485 interfaces with cellular and mesh radios." }, { "title": "Quectel BG77 LTE Cat-M1 / NB2", "path": "/project\u0073/iiot/bg77", "url": "https://www.pureengineering.com/project\u0073/iiot/bg77", "summary": "Compact 14.9 x 12.9 mm cellular LPWA SMT module with integrated GNSS for wearable and industrial trackers." }, { "title": "Dual-Core BLE & 802.15.4 SoC", "path": "/project\u0073/tech/nrf53840", "url": "https://www.pureengineering.com/project\u0073/tech/nrf53840", "summary": "High-temperature dual-core Cortex-M33 wireless SoC reference for BLE Audio, Thread, Zigbee, and USB devices." }, { "title": "Strada Connected Hardware Platform", "path": "/project\u0073/tech/strada", "url": "https://www.pureengineering.com/project\u0073/tech/strada", "summary": "Reference hardware and firmware architecture for rapidly fielding commercial connected sensor products." }, { "title": "Wireless Technologies Selection", "path": "/project\u0073/wireless-technologies", "url": "https://www.pureengineering.com/project\u0073/wireless-technologies", "summary": "Engineering tradeoff guide comparing BLE, UWB, Thread, Wi-Fi, LoRa, LTE-M, NB-IoT, and satellite links." }, { "title": "Off-Grid Mesh & Satellite Comms", "path": "/off-gird-comms", "url": "https://www.pureengineering.com/off-gird-comms", "summary": "Resilient Sub-GHz LoRa mesh and LEO satellite backhaul for remote infrastructure without cellular coverage." } ] }, { "section": "03 // Modular Sensor Architecture, Environmental Probes & PUREmodules", "count": 16, "projects": [ { "title": "Modular Sensor Architecture", "path": "/project\u0073/modularsensor", "url": "https://www.pureengineering.com/project\u0073/modularsensor", "summary": "Solderless 62-mil PCB card-edge interconnect standard for coin-cell IoT sensor prototypes." }, { "title": "PUREmodules Debug Adapter Pinout", "path": "/project\u0073/modularsensor/puremodules-debug-pin-out", "url": "https://www.pureengineering.com/project\u0073/modularsensor/puremodules-debug-pin-out", "summary": "SWD programming, UART console, and 10-pin card-edge pinout specification for PUREmodules hardware." }, { "title": "ESP3212 Wi-Fi & BLE Core Board", "path": "/project\u0073/modularsensor/esp3212-core", "url": "https://www.pureengineering.com/project\u0073/modularsensor/esp3212-core", "summary": "Dual-mode 802.11b/g/n Wi-Fi and Bluetooth processor carrier for the Modular Sensor card-edge bus." }, { "title": "Hydrogen Sulfide (H2S) Gas Module", "path": "/project\u0073/modularsensor/hydrogensulfidesensor", "url": "https://www.pureengineering.com/project\u0073/modularsensor/hydrogensulfidesensor", "summary": "Amperometric 3-electrode electrochemical H2S gas sensor module with programmable potentiostat AFE." }, { "title": "Custom Sensor Board Design Guide", "path": "/project\u0073/modularsensor/sensor-development", "url": "https://www.pureengineering.com/project\u0073/modularsensor/sensor-development", "summary": "Mechanical dimensions, 62-mil PCB gold-finger footprint, and electrical rules for building custom PUREmodules." }, { "title": "Pure Soil Sensor", "path": "/project\u0073/pure-soil-sensor", "url": "https://www.pureengineering.com/project\u0073/pure-soil-sensor", "summary": "Three-zone TI FDC2214 differential capacitive soil moisture probe with BLE and MQTT telemetry." }, { "title": "SGX MiCS-6814 Tri-Gas Breakout", "path": "/project\u0073/mics-6814-sensor", "url": "https://www.pureengineering.com/project\u0073/mics-6814-sensor", "summary": "MEMS metal-oxide triple gas sensor module measuring carbon monoxide (CO), nitrogen dioxide (NO2), and ammonia (NH3)." }, { "title": "ams CCS811 Indoor Air Quality", "path": "/project\u0073/ccs811", "url": "https://www.pureengineering.com/project\u0073/ccs811", "summary": "Low-power digital MOX gas sensor reporting equivalent CO2 (eCO2) and Total Volatile Organic Compounds (TVOC)." }, { "title": "Sensirion SCD40 True CO2 Sensor", "path": "/project\u0073/sensors/scd40", "url": "https://www.pureengineering.com/project\u0073/sensors/scd40", "summary": "PASens photoacoustic NDIR carbon dioxide sensor (400 to 2000 ppm) with integrated temperature and humidity compensation." }, { "title": "Environmental & Industrial Sensors", "path": "/project\u0073/sensors", "url": "https://www.pureengineering.com/project\u0073/sensors", "summary": "Overview of Pure Engineering optical, thermal, gas, soil, and biometric sensor modules." }, { "title": "PUREmodules Ecosystem Overview", "path": "/puremodules", "url": "https://www.pureengineering.com/puremodules", "summary": "Open-source modular hardware ecosystem connecting wireless CoreModules and SuperSensor peripherals without soldering." }, { "title": "PUREmodules Quick Start Guide", "path": "/puremodules/quickstart", "url": "https://www.pureengineering.com/puremodules/quickstart", "summary": "Hardware assembly, battery jumper configuration, and out-of-the-box Bluetooth telemetry walkthrough." }, { "title": "PUREmodules Arduino IDE Setup", "path": "/puremodules/puremodulessetup", "url": "https://www.pureengineering.com/puremodules/puremodulessetup", "summary": "Installing the Nordic nRF52 Board Support Package, SoftDevice stack, and sensor libraries in the Arduino IDE." }, { "title": "PUREmodules Linux Toolchain", "path": "/puremodules/modulessetuplinux", "url": "https://www.pureengineering.com/puremodules/modulessetuplinux", "summary": "Configuring udev rules, dialout permissions, ARM GCC, and OpenOCD on Ubuntu/Debian Linux hosts." }, { "title": "nRF52 Firmware & Bootloader Setup", "path": "/puremodules/nrfcodesetup", "url": "https://www.pureengineering.com/puremodules/nrfcodesetup", "summary": "Flashing the Nordic S132 SoftDevice, DFU bootloader, and application hex files over SWD." }, { "title": "Over-the-Air BLE DFU Guide", "path": "/puremodules/dfu", "url": "https://www.pureengineering.com/puremodules/dfu", "summary": "Updating PUREmodules nRF52 firmware wirelessly using nrfutil packages and the nRF Toolbox mobile application." } ] }, { "section": "04 // Connected Systems, RTOS & Engineering Technical Notes", "count": 15, "projects": [ { "title": "Zephyr RTOS Firmware Architecture", "path": "/project\u0073/zephyr", "url": "https://www.pureengineering.com/project\u0073/zephyr", "summary": "Devicetree hardware abstraction, Kconfig modular builds, and MCUboot secure OTA on Nordic and STM32 targets." }, { "title": "Contiki OS & 6LoWPAN Mesh", "path": "/project\u0073/contiki", "url": "https://www.pureengineering.com/project\u0073/contiki", "summary": "Event-driven protothread RTOS with uIPv6, RPL multi-hop routing, and CoAP for constrained wireless sensor networks." }, { "title": "PureEnergy Micro-Harvesting", "path": "/project\u0073/pureenergy", "url": "https://www.pureengineering.com/project\u0073/pureenergy", "summary": "Low-quiescent-current solar and thermoelectric energy harvesting PMIC carrier for battery-free IoT nodes." }, { "title": "PureMailbox Solar Sensor", "path": "/project\u0073/puremailbox", "url": "https://www.pureengineering.com/project\u0073/puremailbox", "summary": "Solar-powered optical and accelerometer mail-delivery sensor transmitting through metal enclosures over Sub-GHz RF." }, { "title": "PureSense Telemetry Node", "path": "/project\u0073/puresense", "url": "https://www.pureengineering.com/project\u0073/puresense", "summary": "Integrated ambient temperature, relative humidity, barometric pressure, light, and motion sensing platform." }, { "title": "PureSOA IoT Service Architecture", "path": "/project\u0073/puresoa", "url": "https://www.pureengineering.com/project\u0073/puresoa", "summary": "Decoupled service-oriented middleware ingesting edge telemetry into time-series storage and alert pipelines." }, { "title": "GraphAI Edge Sensor Fusion", "path": "/project\u0073/graphai", "url": "https://www.pureengineering.com/project\u0073/graphai", "summary": "Directed-graph signal processing and quantized embedded neural inference across multi-modal sensor streams." }, { "title": "Wearable Health Monitoring", "path": "/project\u0073/health-monitoring-system", "url": "https://www.pureengineering.com/project\u0073/health-monitoring-system", "summary": "Continuous multi-parameter biometric telemetry combining optical heart rate, SpO2, skin temperature, and fall detection." }, { "title": "Real-Time Incident Information", "path": "/project\u0073/real-time-incident-information-system", "url": "https://www.pureengineering.com/project\u0073/real-time-incident-information-system", "summary": "Field-to-command situational awareness network aggregating responder locations and hazard sensors in real time." }, { "title": "Biological & Environmental Sensing", "path": "/project\u0073/biological-technologies", "url": "https://www.pureengineering.com/project\u0073/biological-technologies", "summary": "Precision optical fluorescence, micro-spectrometry, and electrochemical potentiostat instrumentation for bio-assays." }, { "title": "Sustainable Living & Off-Grid", "path": "/sustainable-living", "url": "https://www.pureengineering.com/sustainable-living", "summary": "Solar microgrid telemetry, precision soil moisture sensing, and tank level automation for off-grid homesteads." }, { "title": "Embedded Engineering Tips", "path": "/tips", "url": "https://www.pureengineering.com/tips", "summary": "Practical bench notes for remote UART bridging, ZModem file transfers, and microcontroller architectures." }, { "title": "Netcat & Socat Serial Bridge", "path": "/tips/netcat-serial", "url": "https://www.pureengineering.com/tips/netcat-serial", "summary": "Forwarding physical hardware UART ports over TCP/IP networks using stty, netcat, and socat on Linux." }, { "title": "ZModem File Transfer Over UART", "path": "/tips/zmodem-over-uart", "url": "https://www.pureengineering.com/tips/zmodem-over-uart", "summary": "Sending and receiving binary files over an existing embedded Linux UART console using lrzsz (rz / sz)." }, { "title": "MCU Instruction Set Reference", "path": "/tips/instruction-sets", "url": "https://www.pureengineering.com/tips/instruction-sets", "summary": "Quick comparison of Arm Cortex-M, RISC-V, AVR, MSP430, and PIC embedded instruction set architectures." } ] } ] }