Work

What I have built and what I did

Each project says what I did myself. Some were research, others design and build from start to finish.

Electric drivetrain Completed

VanRaam · 2022 – 2023

A fully electric drivetrain for bicycles

Research into a fully electric drivetrain for bicycles. Including which rules apply and whether it was feasible in practice.

My contribution

Worked out which regulations apply and whether it was feasible
Ran practical tests and built prototypes
Wrote along with the existing pedal-assist system and helped debug the firmware
Researched battery degradation with an analysis of every GSM-connected battery in the field, together with the University of Twente

SolidWorks
Embedded C
Data analysis

Audio electronics Completed

IAH / Siltech · 2019 – 2022

New audio cables, loudspeakers and amplifiers

Developing new products for a high-end audio brand. Improving existing designs based on measurements.

My contribution

Researched magnetic fields and their acoustic effects in audio cables
Designed mechanics and electronics for new products
Worked on the CrystalCable Art series and the Royal Crown series
Tested and measured audio equipment, and helped with the Siltech Symphony and the SAGA amplifiers

Altium
SolidWorks
Audio analysis
Magnetic field measurement

Measurement device Completed

Microflown Avisa · 2017 – 2018

A portable measurement device for defence

Developing a device that had to produce usable measurements under harsh conditions.

My contribution

Designed the circuit board
Wrote the Arduino control software
Designed and 3D printed the enclosure
Assembled and tested the prototype

PCB design
Arduino
3D printing

Wireless control Completed

Inspiro · 2019

Wireless control for a chimney fan

Making an existing wireless control suitable for sale, with a reliable connection and a design that could go into production.

My contribution

Designed the PCB and the analogue RF matching circuit
Wrote embedded C for a Silicon Labs microcontroller
Designed the enclosure
Built the demonstration setup

Altium
Embedded C
Silicon Labs
RF matching

Test rig In development

Own development · Now

Test rig for wheelchair motors

A test setup to load and measure wheelchair motors, so you know what they perform and how long they last.

My contribution

Designed the mechanics and the fixturing
Measurement electronics, sensors and wiring
Control and data acquisition in Python
Set up the test procedures

Python
SolidWorks
PCB design
Load cells

Research Completed

Prange · 2018

Research into harvesting kinetic energy

Part-time research into whether movement can be turned into usable electricity.

My contribution

Did the literature and feasibility study
Set up experiments
Analysed the measurement results

Measurement & testing
Analysis

About these projects

Some of this work was done in employment or as an intern at the companies named. What is written here is my own contribution. The intellectual property of those products belongs to the client.

Technical details that are confidential are left out. If a project looks like what you are planning, I can tell you more in a conversation.

Compare it with your own project

Even if yours looks quite different. The approach is usually the same.

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