Skip to content
HETZENGINEERING

Additional offer · Innovation

Hardware & Product Development

From idea to working prototype: electronics, firmware and housing from one source – telematics and edge gateways, measurement adapters, small devices. We specify interfaces, steer suppliers and test assemblies before they go into the field. With the testing discipline of 20 years of test automation.

Tweezers placing a chip on a small green prototype circuit board

Services

From concept to tested prototype – with clear handovers.

  • 01

    Concept, feasibility and prototype

    Clarify requirements, choose architecture and components, test risks early – then a functional model that answers the critical questions: is the range sufficient, does the power supply hold, does the interface fit? Iterative, with measurable intermediate results instead of specification novels.

    ResultRequirements review, proof of feasibility, working prototype

    • Prototype
    • Feasibility
    • Architecture
    • Iterative
  • 02

    Telematics and edge gateways

    Devices that acquire, pre-process and securely forward machine and vehicle data: selection or development of the hardware, firmware in C/C++ or Python, connection via CAN, Modbus, MQTT, REST or LoRa, power and housing concept for rough environments. Remote update and diagnostics planned in from the start.

    ResultGateway prototype with firmware, interface documentation, test report

    • Edge gateway
    • Telematics
    • CAN
    • MQTT
    • LoRa
    • Linux
    • OTA
  • 03

    Interface specification and supplier management

    Anyone buying components needs unambiguous interfaces: we write interface and test specifications that a supplier can implement and an inspector can accept, hold supplier discussions at technical eye level and accept deliveries against the specification.

    ResultInterface specification, acceptance criteria, supplier reviews

    • ICD
    • Supplier management
    • Acceptance
    • Specification
  • 04

    Housings, brackets and 3D printing

    Mechanics for prototypes and special parts: housings, brackets, adapters and test fixtures designed and 3D-printed – matching board, connectors and installation location. Fast enough to keep up with the prototype cycle.

    ResultCAD model, printed parts, assembly instructions

    • 3D printing
    • CAD
    • Housing
    • Test fixture
  • 05

    PCB X-ray analysis and assembly testing

    Solder joints under BGAs, voids, bridges, contract manufacturing with question marks: X-ray images show what visual inspection and functional test cannot see. Plus thermography under load and electrical testing – for pilot series, complaints and the release of new manufacturers.

    ResultTest report with images, findings, recommendation

    • PCB X-ray
    • BGA
    • Thermography
    • Assembly testing
  • 06

    Reverse engineering and rebuild

    Discontinued assembly, missing documents, supplier gone: we analyse circuit, interfaces and firmware behaviour, document and rebuild – compatible with the existing installation. Details on the embedded page.

    ResultDocumentation, schematic, compatible rebuild

    • Reverse engineering
    • Obsolescence
    • Rebuild

Technology and tools

  • C/C++
  • Python
  • Embedded Linux
  • CAN
  • Modbus
  • MQTT
  • REST
  • LoRa
  • Ethernet
  • CAD
  • 3D printing
  • PCB X-ray
  • Thermography
  • Oscilloscope
  • Signal generator
  • Lab power supplies

Typical assignments

This is what the requests look like that customers bring to us.

  • 01

    "We need a gateway that cannot be bought like this."

    Existing machine, proprietary bus, cloud connection wanted – we build the prototype that gets the data out and transmits it securely.

  • 02

    "The supplier delivers, but not what we meant."

    Interface specification with acceptance criteria both sides can read – and an acceptance that sticks to it.

  • 03

    "The assembly fails in the field, never in the test."

    X-ray, thermography and load instead of guessing: we find the fault that only shows under operating conditions.

  • 04

    "The housing will not be available for six weeks."

    3D-printed prototype housing in days, matching the board – so the field test does not wait for the mechanics.

  • 05

    "The board is discontinued."

    Reverse engineering and compatible rebuild before the last spare part is gone.

  • 06

    "We have an idea and want to know whether it holds."

    Feasibility in weeks instead of months: functional model, measurements, honest assessment – even if the answer is no.

Print head of a 3D printer above a printed red part against a dark background
3D printing: housings, brackets and adapters – overnight instead of in six weeks
Bare dark blue printed circuit board with gold-plated pads and traces
PCB before assembly: layout, interfaces and test points specified
Small radio module on a single-board computer next to an antenna with cable on a dark workbench
Edge gateway in the making: radio module, antenna, data path through to the dashboard

References in this area

New offer – references to follow. The basis is our engagements in embedded systems and rail.

All projects

Firmware, communication stacks and functional safety for your device?

Go to Embedded Systems – Industry

An idea that deserves a prototype?

In an intro call we tell you what it takes, roughly what it costs – and whether we would do it.

Book an intro call30 min · online · no obligation

What happens next

  1. 01

    Intro call

    30 minutes online: your task, our questions, a first assessment.

  2. 02

    Short written assessment

    Whether and how we can help, which approach fits, roughly what it takes.

  3. 03

    Offer with a clear scope

    Service, result, time frame – you decide, we start.

Prefer writing? Send an email

Book an intro call Call