Electronics, controls and software
Voltwyn is my engineering practice. I take on engineering problems across domains, from robots and prototypes to embedded electronics, automation, data and test, and carry them from the first requirement to a working system, with the tests and records that show what it does and does not prove.
Service areas
Each area starts with a paid Define phase and ends with a tested system and the records behind it. Each links to work already on this site, with its own description of what it covers.
ROS 2, navigation, sensor fusion and motion control.
Robots that sense, localise, plan and recover, with the navigation stack checked in simulation before it runs on hardware.
Start with: A Define phase that sets the task, the sensors, the operating area and the simulation tests the robot has to pass.
Proof on this site
Mechanisms, actuators, sensors and test rigs.
Mechanical, electrical and control design worked out together, then built into a prototype you can test and improve.
Start with: A Define phase covering loads, motion, environment and what the prototype has to demonstrate.
Proof on this site
Custom PCBs, ESP32 and STM32 firmware, sensor interfaces and communications.
Boards and firmware with explicit operating states, outputs held safe until enabled and tests that run without the hardware.
Start with: A Define phase that fixes the interfaces, power, environment and acceptance criteria for the board.
Proof on this site
These checks support the PCB design and software behaviour; assembled-board measurements and field validation remain separate work.
PLC, HMI/SCADA, MES and production data, drives, instrumentation, FAT/SAT and commissioning.
Control logic, operator screens and production-data links built to a functional specification, then checked through factory and site acceptance before handover.
Start with: A Define phase that agrees the process, the control philosophy, the interfaces and the acceptance tests.
Proof on this site
Perception, inspection, time-series analysis and decision tools.
Models and tools built so a person can check the input, the rule and the result before acting on it.
Start with: A Define phase that agrees the data available, the decision it should support and how the results will be judged.
Proof on this site
Industrial IT, engineering tools, test rigs, CAN and automotive validation, and verification evidence.
Tests and tools that leave evidence someone else can audit: instrumented runs, logged data, defect records and the software that ties them together.
Start with: A Define phase that sets what must be proved, the test method and the records the result has to leave.
Proof on this site
Not listed? I take on engineering problems in other domains too. Describe yours in the enquiry form and I will tell you plainly whether I am the right fit. Go to the enquiry form
Equipment makers, machine builders, research teams and businesses that need a robot, mechanism, board or model built and tested, and documented well enough to hand over.
Safety-rated control systems, certified products and volume manufacturing. If your job needs one of these I will say so early and point you to a better fit.
How it runs
Each phase ends with something you keep, and the next phase is quoted from it.
Phase 1
A short, paid study before any design work. We agree what the system must do, what it connects to, the environment it works in, the limits on size, power and cost, and the acceptance criteria.
You receive: A written specification, interface list, block diagram, risk register and a fixed-price quote for the Design and build phase.
Basis: Fixed fee of A$1,400 for one system or prototype, agreed before work starts.
Phase 2
Mechanical, electronic, firmware and software design to the agreed specification, with a design review before parts are ordered or boards are made. Materials, parts, fabrication and assembly costs are separate.
You receive: Design files, bill of materials, firmware and software source, the working prototype and the design review record.
Basis: Fixed price, quoted from the Define phase specification.
Phase 3
The prototype is tested against the acceptance criteria from the Define phase: measurements, simulation runs or data checks, as the work needs. Testing happens on site where the equipment requires it.
You receive: Verification pack, test records and handover notes.
Basis: Hourly at A$140 per hour, with a cap agreed in writing before the phase starts.
After handover: changes, further revisions and production questions at the hourly rate, by arrangement.
Rate basis
Australian dollars, excluding GST. Every quote states the basis, the cap and what you receive.
Start here
Tell me what you are building, what it has to work with and what a good result looks like. I reply with a short list of questions and a Define phase proposal.
