Exoskeleton Assistive Robot

I designed and developed a wearable robotic assistive system aimed at improving balance and mobility for elderly and mobility-impaired users.

Building the System

The system integrates:

IMU Sensors → Embedded Controller → PID Control → Actuation → Feedback

I worked on sensor integration, embedded control, stabilization algorithms, testing, and system refinement.

Testing & Results

  • Response time: approximately 50–80 ms
  • Stability improvement: approximately 15–20%
  • 3 months of weekly field trials
  • 10–15 elderly and mobility-impaired users
  • 80% positive responses regarding balance support and usability

What Comes Next

The project continues to evolve through user feedback and system testing, with a focus on improving stability, responsiveness, comfort, and reliability.

Surgical Assist Arm

A robotic arm designed for surgical assistance and medical training applications.

Engineering

I built a 4–6 DOF robotic arm using Arduino/ESP microcontrollers and integrated multiple servo and stepper motors through PWM and UART communication.

I also designed the circuit and power architecture operating between 5V–12V.

Performance

  • 90% operational stability
  • <100 ms control latency
  • <5% positioning error
  • Iterative calibration and testing

The project received First Prize at a STEM Fair for engineering innovation and practical application.

Reflection

Building the arm taught me that engineering is rarely about getting everything right on the first attempt. Most of the work happens through testing, identifying failure points, and improving one part of the system at a time.

Mathematical Olympiad Book Project

From Solving Problems to Sharing Them

Mathematics has always been an important part of my learning journey. I wanted to create something that could help other students experience the same process of challenging themselves through difficult problems.

I researched, compiled, and organized Mathematical Olympiad materials covering:

Number Theory • Combinatorics • Graph Theory

Building the Book

I developed a multi-level collection of problems and solutions focused on problem-solving techniques, theorems, lemmas, and mathematical reasoning.

The project eventually resulted in the publication of 500 copies, generating approximately 40 million VND in profit.

Giving Back

The project was designed not only around mathematics, but also around impact.

20 million VND of the proceeds was allocated toward scholarships for students at Làng Chếu Primary School, Tà Xùa.

The project also supported students through donations of:

  • 200 backpacks
  • 300 sets of school supplies

What Mathematics Taught Me

A problem can begin as something you solve for yourself, but knowledge becomes more meaningful when you find a way to share it with someone else.