Chathura Nirmal Weerasinghe

Biography

I’m Chathura Nirmal Weerasinghe. I am an Electronic Engineering Undergraduate, specializing in Biomedical Engineering at the University of Moratuwa. I am passionate about Wearables, Human Computer Interaction, and Edge Computing.

In my Research Experience, I previously worked as a Research Intern at the Exertion Games Lab at Monash University, supervised by Dr. Don Samitha Elvitigala and Prof. Florian 'Floyd' Mueller. My work focused on developing wearable systems, including 'VibroBits,' a vibrotactile feedback system for sports training. I also provided technical engineering support for various PhD projects, such as gaze aversion detection and lucid dream induction studies, and was involved in the research process from initial analysis to manuscript revision.

In my Product Development Experience, I contributed to MeasureUP, a World Bank funded project to develop a portable height measuring device. We used K means clustering to address signal loss from dense scalp hair in ultrasound readings. The project was commercially launched, and I gained experience in medical product development and regulatory compliance under Dr. Ajith Pasqual.

In my academic background, I received bronze medals for both the Physics and Mathematics Olympiad and secured the 9th place representing Sri Lanka at the 12th Statistics Olympiad in 2020. For the GCE Advanced Level exam, I was ranked 99th out of 34,389 candidates, placing within the top 0.3% nationally, with A’s in all four subjects Maths, Physics, Chemistry, and English.

In my free time, I am interested in video and graphic designing, as well as scriptwriting and acting in dramas. Here, I have attached some of my dramas. Go and see "What the Sense of Humor through an Engineering Eye is." 1."Latha.AI" , 2."Parakiyana Tharuka".

Experience

I am a former Research Intern at the award winning Exertion Games Lab at Monash University, working under the supervision of Dr. Don Samitha Elvitigala and Prof. Florian 'Floyd' Mueller. My tenure focused on developing novel wearable systems, notably 'VibroBits,' a vibrotactile feedback system for sports training demonstrated at SportsHCI ’25, for which I was the first author.

Beyond my primary research, I provided technical engineering for several PhD initiatives: I developed a gaze aversion detection system using Tobii Eye-Trackers and embedded modules for Nathalie Overdevest's 'Embodied Remembering' project, and prototyped wireless olfactory and thermal devices for Poyao 'Cosmos' Wang’s lucid dream induction study. Additionally, I designed AR navigation systems using HoloLens 2 for Linjia He’s research on cyclist attention, while also assisting in the associated systematic review. Throughout the internship, I executed full-cycle research workflows from gap analysis to manuscript revision and actively engaged in the lab’s scholarly culture.

Projects

ECG Signal Monitoring System

Designed an analog circuit for ECG signal extraction using Right Leg Drive and multi stage filtering. Analyzed Op Amp parameters and validated filter effectiveness using FFT techniques.

Ultrasound Height Measurement

Developed a K means clustering algorithm to classify ultrasound reflections from dense scalp hair, achieving 3cm accuracy. Addressed signal loss issues and preprocessed datasets for robust detection.

MeasureUP - Portable BMI Device

Led a World Bank funded team to develop a cost effective portable BMI device. Utilized K means clustering for precision and managed FDA compliant product design and documentation.

VibroBits: Visualising CoP Using Vibrotactile Feedback

A novel wearable system delivering real-time vibrotactile feedback of the Center of Pressure (CoP) via smart insoles. Designed to enhance body awareness and stability for sports training and rehabilitation.

Brain Computer Interface Game for a Locked In Pediatric Patient (Ongoing)

World Bank funded AHEAD Project to Develop a Portable BMI Measuring Device for Clinical Settings.

Zero G Dynamic Body Weight Support System Using a Motorized Unloader

ECG Signal Extracting and Monitoring Using Analog Electronics and Wet Electrodes

Human Height Measuring Under Low Ultrasound Reflection due to Dense Scalp Hair

Publications

VibroBits: Visualising Body Centre of Pressure Using Vibrotactile Feedback for Sports Training

Chathura Nirmal Weerasinghe , Ruchira Abeywardhane, Uvindu Kodikara, Sasindu Abewickrema, Nihar Sabnis, Florian ’Floyd’ Mueller, Don Samitha Elvitigala • SportsHCI '25: Proceedings of the First Annual Conference on Human Computer Interaction and Sports • November 2025
GestureSock++: Toe Gestures as Alternative Input Method while Cycling

Vincent van Rheden, Sasindu Abewickrema, Uvindu Kodikara, Ruchira Abeywardhane, Chathura Weerasinghe , Florian ’Floyd’ Mueller, Don Samitha Elvitigala • SportsHCI '25: Proceedings of the First Annual Conference on Human Computer Interaction and Sports • November 2025

Honors & Awards

Bronze Medalist at the Sri Lankan Mathematics Olympiad Competition - 2019 - Awarded by Sri Lanka Mathematics Olympiad Foundation
Bronze Medalist at the Sri Lankan Physics Olympiad Competition - 2019 - Awarded by Institute of Physics Sri Lanka
Finalist at the Sri Lankan Chemistry Olympiad Competition - 2019 - Awarded by Institute of Chemistry Ceylon
A Winner at the National Statistics Olympiad Competition - 2018 - 2019 - Awarded by Institute of Applied Statistics Sri Lanka
Secured 9th place in the senior category representing Sri Lanka at the 12th Statistics Olympiad. Issued by C. R. Rao Advanced Institute of Mathematics, Statistics and Computer Science (AIMSCS), University of Hyderabad Campus, Hyderabad