KEMP TECH LLC is a registered United States limited liability hardware engineering lab headquartered in Center Ossipee, NH. We focus exclusively on custom embedded industrial hardware design, PCB layout manufacturing coordination, low-level firmware coding, and full lifecycle hardware maintenance for OEM equipment manufacturers, system integrators, precision manufacturing production lines and medical instrumentation developers. Our cross-discipline engineering team combines circuit design, embedded software, industrial signal acquisition and environmental reliability testing specialists to deliver compact, robust board-level hardware tailored to harsh factory, cold storage and precision measurement operating environments. All hardware design schematics, firmware source code, test log data and OEM client proprietary specification files are stored on encrypted US-hosted cloud infrastructure following industrial embedded device IP security compliance standards.
Years Custom Industrial Embedded PCB & Firmware Engineering Experience
Completed OEM Custom Control Board, Edge Gateway & Sensor Module Hardware Projects
KEMP TECH LLC is a fully registered United States limited liability hardware engineering enterprise, with our primary circuit design lab, firmware development workspace, environmental reliability test bench and OEM client project management office located at 21 Pleasure Lands Glade Rd, Center Ossipee, NH, 03814-6130 United States. Our cross-discipline electrical and software engineering team delivers fast-turn OEM hardware feasibility assessments, full custom PCB schematic/layout design, low-level embedded firmware coding, prototype bench testing and multi-year production lifecycle support for factory automation equipment makers, precision measurement instrument OEMs, cold-chain logistics tracking hardware developers and regional industrial system integration firms across all New Hampshire and Northern New England industrial technology corridors.
Our engineering service lineup is separated into six core embedded hardware verticals: custom industrial multi-layer PCB schematic & layout design for control and sensor acquisition hardware, low-power edge gateway embedded PC board development with wired/wireless industrial communication stacks, analog/digital sensor signal acquisition module hardware design & signal conditioning firmware, OEM PLC subsystem and auxiliary control board custom engineering, bare-metal & RTOS industrial device firmware development and feature customization, and multi-year fixed-price production hardware lifecycle maintenance, firmware update and component obsolescence mitigation retainer agreements. Our internal staff includes senior PCB layout engineers, RTOS embedded software developers, industrial analog signal specialists, environmental shock/vibration test technicians and dedicated OEM account engineering coordinators with decades of harsh-environment industrial embedded device mass-production launch support experience.
We provide complimentary pre-project OEM hardware requirements feasibility audit visits with zero upfront engineering service fee, deliver fully phased prototype → pre-production → mass manufacturing hardware development roadmaps tailored to each OEM client’s unit volume target and cost-per-unit budget constraints, offer volume-discounted annual hardware lifecycle support retainer contracts for permanent mass-production equipment OEM partners, and deliver a comprehensive multi-year workmanship warranty covering all custom-designed embedded PCB, module and firmware engineering deliverables. All hardware schematic design files, firmware source code repositories, prototype environmental test logs and OEM client proprietary product specification documents are delivered via password-locked encrypted cloud file storage for permanent intellectual property protection and long-term production lifecycle traceability retention aligned with industrial OEM device IP security standards.
No-charge lab walkthrough evaluating sensor, power, communication and environmental hardware design constraints
Unified PCB layout, analog signal and firmware development eliminating third-party cross-team coordination delays
Rapid response prototype feasibility consultation booking for all New England OEM equipment manufacturer clients
Scheduled component obsolescence reviews, firmware feature updates, priority emergency hardware revision engineering dispatch
Custom embedded hardware development project packages tailored for discrete factory automation OEMs, precision measurement instrument manufacturers, cold-chain logistics tracking hardware developers and industrial system integration technology firms across Northern New England industrial tech corridors
Complete end-to-end circuit design service for industrial control, sensor and edge computing hardware including full schematic capture, multi-layer stack-up definition, high-speed signal trace routing, power ground plane partitioning, EMC/EMI noise reduction layout optimization and full manufacturing Gerber, drill and bill-of-materials documentation generation for prototype and mass-production PCB fabrication runs.
Custom compact edge computing gateway hardware design for remote factory monitoring, cold-chain asset tracking and distributed sensor data aggregation systems, integrating wired Ethernet, RS485/Modbus, CAN bus and LoRa/Wi-Fi/BLE wireless communication interfaces, wide industrial input voltage power regulation and flash memory local data buffering for offline operation during network outages.
Specialized low-noise analog front-end circuit board development for thermocouple, RTD temperature, pressure, strain gauge, 0–10V/4–20mA process and digital encoder industrial sensors, implementing precision gain amplification, offset trimming, anti-aliasing filtering and galvanic isolation to eliminate ground loop noise interference in multi-machine factory installations.
Custom I/O expansion and dedicated production station control board hardware designed to integrate with main factory PLC platforms, providing dedicated valve driver outputs, proximity sensor input multiplexing, motor speed control analog drive signals and local manual operator interface switch inputs for specialized single-machine production work cell requirements offloaded from the main plant PLC controller.
Full low-level embedded software development service including bare-metal register-level MCU code, FreeRTOS/ThreadX real-time operating system application firmware, industrial communication protocol stack implementation, sensor sampling control logic, remote over-the-air (OTA) firmware update bootloader design and fault diagnostic logging code for custom OEM hardware platforms.
Fixed annual volume discount managed service retainer packages for permanent OEM equipment manufacturing clients covering scheduled quarterly component obsolescence part replacement audits, on-demand firmware feature enhancement development, continuous hardware errata revision documentation tracking and priority same-week emergency engineering dispatch for unplanned mass-production hardware design flaw remediation events.
Lab walkthrough signal/power/environment constraint scan + unit cost & development timeline roadmap report
2-layer board schematic, layout, Gerber outputs + basic bare-metal test firmware for prototype validation
Analog front-end PCB, ADC sampling RTOS firmware + bench environmental prototype validation testing
Quarterly component obsolescence audits, firmware dev hours + priority emergency hardware revision engineering dispatch
Our embedded engineering lab completed a complimentary pre-development hardware feasibility audit for a Vermont discrete automated assembly machine OEM seeking a compact custom auxiliary control board to offload specialized fixture valve drive and multi-channel proximity sensor multiplexing workloads from their main plant PLC platform, eliminating costly large-form-factor third-party commercial expansion modules that wasted cabinet space and added unneeded unused I/O channels to each production machine unit. We delivered full multi-layer PCB schematic and layout design including surge-protected 24V digital input circuits, high-current sinking valve driver output stages, galvanically isolated analog 0–10V control signal outputs and an integrated Modbus RTU communication interface to exchange register data with the customer’s standard master factory PLC platform. Our firmware team developed lightweight bare-metal slave Modbus stack code with local fault latch logic and front-panel LED diagnostic indicator control, and performed full bench prototype environmental temperature cycling and electrical surge reliability testing to validate compliance with the OEM’s harsh factory operating environment specifications prior to pre-production PCB fabrication runs. Following successful mass-production launch of the custom control board product line the manufacturing OEM signed a multi-year hardware lifecycle support retainer agreement covering quarterly semiconductor component obsolescence review reports, on-demand minor firmware feature enhancement development hours and priority emergency engineering dispatch to resolve any unanticipated mass-production hardware design errata issues impacting assembly machine output volumes.
We executed a full turnkey embedded hardware development project for a Massachusetts cold-chain logistics instrumentation OEM designing compact battery-powered edge gateway tracking hardware to install inside refrigerated intermodal shipping containers for continuous remote temperature, humidity and door open event monitoring via LoRaWAN long-range wireless communication networks. Our circuit design engineers created a low-power multi-layer PCB integrating ultra-low quiescent current power regulation circuitry supporting both internal lithium primary battery operation and external 12V vehicle auxiliary power input, multi-channel analog RTD temperature and capacitive humidity sensor signal conditioning front ends, and a certified LoRaWAN radio module with integrated antenna matching network layout optimized for cold-container metal enclosure RF propagation performance. Our firmware team developed a power-optimized FreeRTOS application stack implementing periodic sensor sampling, local flash memory offline data buffering during temporary wireless coverage outages, scheduled LoRaWAN uplink transmission and secure signed OTA remote firmware update bootloader functionality to enable post-deployment feature upgrades without physical hardware recall. Full prototype environmental testing was completed across -30°C to +60°C operating temperature ranges to validate stable sensor measurement accuracy and wireless communication performance under extreme refrigerated transit operating conditions, and all manufacturing Gerber, assembly and test documentation packages were delivered to the OEM’s contract PCB fabrication partner for volume production launch. The logistics instrumentation OEM established an annual hardware lifecycle support retainer contract with our lab for recurring component obsolescence audits, on-demand firmware feature modification engineering hours and priority emergency circuit revision support if any mass-production hardware performance issues arise during multi-year field deployment cycles.
Our analog signal engineering division delivered a complete custom sensor acquisition hardware development project for a New Hampshire precision laboratory measurement instrument OEM experiencing consistent ground-loop induced measurement noise errors on their existing multi-channel input hardware platforms deployed in multi-machine industrial test laboratory environments with disparate equipment ground potential levels. We designed an 8-channel fully galvanically isolated analog front-end PCB utilizing precision low-drift instrumentation op-amps, configurable gain stages for thermocouple/RTD/4–20mA sensor input types and high-order anti-aliasing RC filter networks to eliminate high-frequency electrical interference noise from nearby lab motor and power supply equipment. Each analog channel incorporates separate isolation transformers to break cross-channel ground loop conduction paths, feeding a multi-channel simultaneous-sampling ADC device with dedicated reference voltage circuitry calibrated for long-term measurement stability across wide ambient temperature fluctuation ranges. Our embedded software team developed a deterministic FreeRTOS firmware application implementing synchronized multi-channel ADC burst sampling, digital offset calibration self-test routines and Modbus TCP industrial communication stack integration to stream high-precision measurement data to the instrument’s host touchscreen HMI controller unit. Extensive bench testing was performed to validate measurement linearity, noise floor performance and galvanic isolation breakdown voltage compliance before releasing final production hardware design deliverables, and the precision instrument OEM retained our engineering lab under a multi-year lifecycle support retainer for quarterly passive and active semiconductor component obsolescence tracking reports and on-demand measurement firmware algorithm enhancement development support hours for future instrument product line feature revisions.
Submit full OEM equipment hardware development details including target operating environment, sensor/communication interface requirements, mass-production unit volume target and product launch timeline goals to receive a complimentary on-site lab hardware feasibility assessment consultation and customized fixed-scope custom embedded hardware design & firmware development proposal from our cross-discipline PCB layout and RTOS embedded software engineering specialist team
21 Pleasure Lands Glade Rd
Center Ossipee, New Hampshire, 03814-6130 United States
3183418960
info@kemptech.bond
KEMP TECH LLC