Hardware Design and Product Development Services

We develop custom hardware from initial requirements through PCB design, firmware, enclosure design, prototyping, testing, and manufacturing handoff.

Challenges We Solve

The things that stall a hardware project, and what we do about each one.

  • Prototype Designs That Are Not Ready for Manufacturing

    A functional prototype may still require changes to support reliable assembly, testing, sourcing, and production. We include design for manufacturing and test requirements throughout development.

  • Component Availability and Lifecycle Risk

    We evaluate component availability, lead times, lifecycle status, and alternatives before finalizing the design and bill of materials.

  • Late Thermal and Mechanical Issues

    PCB dimensions, component placement, heat dissipation, connectors, and enclosure requirements are developed together to identify integration issues before tooling or production.

  • Missing Production Test Procedures

    We define functional test requirements, test points, procedures, and fixtures so production units can be verified consistently.

  • Coordination Across Multiple Engineering Suppliers

    Electrical, firmware, and mechanical engineering are managed through one project team with shared requirements, schedules, and design reviews.

Our Hardware Services

Integrated electrical, firmware, and mechanical engineering for custom hardware products, from initial design through manufacturing preparation.

  1. PCB Design ServicesPart selection, schematic capture, multi-layer PCB layout, controlled impedance, power distribution, design review, and preparation of fabrication and assembly files.
  2. Product Development PrototypingFunctional prototypes for feasibility testing, engineering validation, user evaluation, demonstrations, and design refinement before production release.
  3. 3D Printing and FabricationIn-house SLA and FDM printing for fit checks, functional prototypes, test fixtures, custom components, and short-run parts using materials selected for the test requirements.
  4. CAD and Enclosure DesignMechanical architecture, enclosure CAD, tolerance analysis, thermal design, material selection, assembly details, and production drawings.
  5. Embedded FirmwareBoard bring-up, device drivers, communications, control logic, diagnostics, bootloaders, secure field updates, and embedded test support.
  6. Design for Manufacture and TestPanelization, test access, assembly documentation, production programming, functional test procedures, and manufacturing support.

Benefits of One Hardware Team

The difference it makes to your schedule, your bill of materials, and what you own at the end.

  • Integrated Project Delivery

    Electrical, firmware, and mechanical work follows one set of requirements, milestones, and review points.

  • Complete Design Ownership

    Clients receive editable schematics, PCB layouts, CAD files, firmware source, and production documentation.

  • Lower Redesign Risk

    Early feasibility work and staged prototyping identify technical issues before the design reaches production.

  • More Reliable Component Sourcing

    Bills of materials include availability checks, lifecycle review, and alternatives for critical components.

  • Repeatable Manufacturing

    Production packages include fabrication data, assembly information, test points, and documented test procedures.

  • Certification Readiness

    Electrical spacing, emissions, power, thermal, and enclosure requirements are considered before formal compliance testing.

How We Work

Four stages, each ending in something you can review and a decision you can actually make.

  1. Concept and Feasibility

    Define product requirements, operating conditions, interfaces, compliance needs, target cost, production volume, and the technical risks that require early validation.

  2. Detailed Design and Engineering

    Develop schematics, PCB layouts, firmware architecture, enclosure models, and a bill of materials reviewed for availability, lifecycle, and lead time.

  3. Prototyping and Iteration

    Build and test engineering prototypes, document results, correct identified issues, and complete the design revisions required for the next validation stage.

  4. Testing and Refinement

    Verify the design against approved requirements, complete pre-compliance testing where applicable, and prepare the production and test documentation for manufacturing handoff.

Every node on the track is a gate. At each one you can carry on, change the scope, or take the design files and go elsewhere. You're never committing to the whole thing at once.

Hardware Applications

Hardware development for connected, industrial, portable, commercial, and regulated products.

  • Connected Sensors and Instrumentation

    Sensor interfaces, signal conditioning, calibration, data acquisition, embedded processing, and device connectivity.

  • Environmental and Remote Monitoring

    Low-power electronics, wireless communications, outdoor enclosures, remote updates, and long-term field operation.

  • Industrial and Control Electronics

    Embedded controllers, wired communications, machine interfaces, power electronics, and designs for electrically noisy environments.

  • Battery-Powered and Portable Devices

    Power budgeting, battery selection, charging, low-power firmware, compact electronics, and portable enclosure design.

  • Consumer and Commercial Products

    Custom electronics and enclosures developed around usability, appearance, reliability, production cost, and service requirements.

  • Certified and Regulated Products

    Products developed for applicable electrical safety, electromagnetic compatibility, wireless, environmental, and industry-specific requirements.

Why Work With Us

Four commitments we make on every hardware engagement.

  • Integrated Hardware Engineering

    PCB design, firmware, enclosure design, prototyping, and manufacturing preparation are handled by one project team.

  • Client Ownership

    Editable design files and source code transfer to the client according to the project agreement.

  • Prototype-Based Validation

    Technical uncertainty is addressed through calculations, simulations, focused prototypes, and documented testing.

  • Manufacturing-Focused Decisions

    Materials, tooling, assembly methods, test requirements, and production volume are considered during design.

Hardware Engagement Models

Choose a focused design review, a complete product-development program, or additional engineering capacity for an existing team.

  • Design Review

    Fixed fee, one to two weeks

    An independent review of schematics, PCB layout, bill of materials, firmware interfaces, enclosure constraints, and manufacturing readiness, with findings ranked by risk.

    Best for an existing design before prototype or production release.

  • Full Product Development

    Milestone-based, typically four to nine months

    Complete product development from requirements and feasibility through design, prototyping, validation, and manufacturing handoff, managed through defined milestones.

    Best for new hardware products or substantial redesigns.

  • Engineering Capacity

    Monthly, ongoing

    Additional electrical, firmware, or mechanical engineering capacity assigned to a defined workstream within the client's existing development process.

    Best for teams that need additional technical capacity or specialized expertise.

Common Questions

The things people ask us on the first call, answered the way we'd answer them on the phone.

Can you pick up a design someone else started?

Yes. We usually begin with a design review covering the available schematics, PCB files, firmware, mechanical files, bill of materials, test results, and production documentation. The review identifies what can be retained, what requires revision, and the recommended next steps.

Who owns the design files?

The client owns the completed project files according to the project agreement. Handover includes editable schematics, PCB layout, mechanical CAD, firmware source, and applicable production documentation rather than exported files alone.

What production volumes do you design for?

Our typical work covers production volumes from hundreds to low hundreds of thousands of units. The appropriate enclosure, assembly, tooling, and test strategy depends on expected volume, target cost, product life, and service requirements.

Do you handle certification?

We design for applicable certification requirements, perform available pre-compliance testing, prepare technical documentation, and support formal testing through an accredited laboratory. Formal certification is issued by the laboratory or relevant authority.

Can you build the software side too?

Yes. Our software team can develop the device services, APIs, web applications, mobile applications, dashboards, and cloud infrastructure associated with the hardware. See Software Development.

Selected Work

Boards, the firmware running on them, and the systems they report to, written up with the constraints as well as the outcome.

HardwareA Gulf Coast marine services operator2025

Autonomous Coastal Water Quality Monitoring

A solar sensor node, a LoRa backhaul requiring no cellular contract, and a dashboard reviewed by an operations team before crews leave the dock.

All Case Studies

Start a Hardware Engagement

Send us the product requirements, available design files, target production volume, operating conditions, and current technical questions. We will recommend an appropriate first phase.

hello@sunlabdigital.comSend us the details

St. Petersburg, Florida · we work with teams anywhere