Hardware design & embedded firmware
An idea for a device, or a prototype on your desk? I'm Clemens Elflein. I develop the electronics and firmware that move your project forward.
Direct collaboration. One contact for hardware and software.
Services
Custom electronics and embedded software, with workshop capabilities to build and refine prototypes.
From circuit design to PCB layout and board bring-up: develop electronics around your device, interfaces, power requirements, and available space.
Firmware that connects your electronics to the rest of the system: microcontroller software, sensor and motor interfaces, and integration with higher-level applications.
A working board is only the beginning. I develop flashing and test workflows that turn repeated manual steps into a consistent process for each device.
Explore this serviceTest the charging electronics without preparing a real battery for every run. A configurable battery model helps recreate starting conditions and make charger behaviour easier to compare.
Explore this serviceIn-house PCB assembly, 3D printing, CAD, and laser cutting help turn designs into prototypes and explore mechanical fit alongside electronics and firmware.
EquipmentIndividually commissioned services
From an existing project to a new device idea: choose a scoped package and get a proposal for your next step.
Personal reply within one business day · Individual fixed-price proposal before commissioning
Package inquiries are non-binding. I first assess the subject, scope and available capacity, and may decline an inquiry or suggest a different scope. An engagement begins only when you accept my specific proposal. The agreed deliverables, boundaries and prices in that proposal apply.
From a device idea to an engineering decision
Is there a practical way to build your device? I investigate the critical technical assumptions and compare approaches before you commit to development.
A second opinion on your existing project
Get a second opinion on your hardware or firmware, including schematic and PCB layout review before manufacture. We agree the focus and you receive prioritized findings and next steps.
When the new board does not work yet
A board will not boot, a sensor stays silent or communication is unstable? I investigate one defined fault on your prototype and document the next steps.
About Me
I'm Clemens, the person behind x-tech. I enjoy turning individual components into a thoughtfully designed device.
Electronics, firmware, and the complete system belong together in my work. A new board, an existing prototype, or a tricky interface: let's look at where you are and the development you actually need.
Let's look at your projectClemens Elflein x-tech
Inside my work
Explore the hardware, firmware, and system integration behind OpenMower, xCore, and xESC.
The xCore is a robotics compute module: STM32H723 + Raspberry Pi CM4 + IMU + Gigabit Ethernet in a SODIMM form factor.
The xESC Mini is a small, low-cost, VESC-based FOC motor controller built for robotics — 10 A / 40 V in a 50 × 30 mm board.
A universal robot mainboard built around the xCore — power, connectivity, and real-world I/O for any robot on a single board.
Working together
You don't need to have every answer yet. An idea, a problem, or an existing build is a good starting point.
Describe your device, current stage, and goal. Existing documentation helps identify interfaces and open questions.
We discuss the development needed, concrete deliverables, and an appropriate validation scope and timeline.
Hardware, firmware, and prototypes are considered together. The agreed requirements provide the basis for evaluation.
Your next project
A short description is enough. It's fine if the details, budget, or timeline are still open.
I reply personally within one business day. We agree the scope, price and schedule before paid work starts.
Deliverables, costs & working together
Prefer to email directly?
post@x-tech.online