Projects
Last Updated: 20/09/2023
Recycling Automation Machine
Collaborating with Vitasoy Hong Kong to automate a particular step of the recycling process of Tetrapak.
The MVP has been developed while keeping a good balance between functionality, cost and speed. It is currently under testing. The product will be an ongoing R&D project which will then be productized for consumer usage.
Multi-Tool 3D Printer
Internal R&D project for a novel 3D printer. Tailor-made printer with multiple, detachable tools which can extrude proprietary material. It is currently used as a platform for internal testing.
Wine Celler
A smart wine cellar tailored for wine connoisseurs. It features a sleek tilting drawer, enhancing bottle display. With independent temperature-controlled compartments, one can effortlessly scan and store wine bottles, while the cellar automatically adjusts the perfect temperature for each type of wine. Plus, the energy-saving design includes a bottle presence sensor, which optimizes efficiency when bottles are not present. There is also a screen present to display the status of each compartment.
Orthopedic Implant
A patent-pending implant for the fixation of bone fragmentation in the proximal humerus.
Patent
Water bath
A temperature-controlled water-bath used to run material testing of implants submerged in fluids at body temperature to mimic in vivo conditions. A large Acrylic Tube was used for the walls, the base was made of SUS316 with holes to insert the heating tubes. A controller with a temperature sensor was used to regulate the temperature.
Screw Pull-out Jigs
Fixtures, made of SUS316, designed as per different dimensions of the screw head of different screws to perform screw Pull-out experiments.
Suture Testing Jig
Testing jigs designed to perform tensile tests on different sutures without causing excessive stress concentration on specific regions. This was achieved using large curvature for looping the suture and have almost no sharp edges on any surface which the suture makes contact. SUS316 was used to manufacture the fixture.
Bending Jigs
Adjustable bending jigs designed to perform either 3-point or 4-point bending tests on Orthopedic Screws. Hardened SUS420 was used to ensure the jigs don’t get damaged. Cylinders were used to minimize the contact surface of the jig with the implant without causing any damage. Cylinders of different sizes could be used to do tests on screws of different specifications.
Suture Retreiver
An ergonomic hand-held tool that helps surgeons retrieve sutures while performing Proximal Humerus Fracture fixations. The design of the tip allows it to be inserted through a small incision and the contact surface sits flush on proximal humeri of different sizes.
Custom Screw-driver
Custom Screw-Driver made to fit screw heads with minimum tolerance to perform torque test. The image shown is a driver made to lock into the Multiloc Screw head perfectly. Hardened SUS420 was used to manufacture the driver.
Custom Screw Clamps and Collets
Screw clamps designed according to different screw specification which allow users to clamp on to screws without damaging the threads. The fixture could be used to perform torque test on screws so hardened SUS420 was used to ensure the fixture is not damaged.
Fluid Dispenser
A dispenser made from a deconstructed pipette and a stepper-motor. Most of the fixture for the device was manufactured using 3D printed PLA. A pipette tip holder was integrated with a robot arm which was then connected to the pipette using a plastic tube. It was fine-tuned such that any volume of fluid (within the max limit) could be retrieved and dispensed automatically.
Modular Cartridge
A cartridge, made of 3D printed PLA, designed to hold multiple test-tubes containing different fluids. The top tray of the cartridge could be removed to place the test-tubes and the acrylic cover on top prevented contamination. A servo-motor was attached to the top cover (with a single hole) to only provide access to specific test tubes.
Test-Tube heater
A test-tube heater calibrated to heat up the contents of the test tube to specific temperatures and maintain it within +-2°C. Very small heating plates were used to heat up the test tubes at a reasonable rate so that the test tube doesn’t get damaged but it isn’t too slow either. A closed loop (PID) control system was set up so that the heaters respond to the readings received from the temperature sensor.
Spidfier
An integration of the tools mentioned earlier and more. A Minimum Viable Product that is capable of extracting the nucleic acid from fish samples in under 30 minutes.
While I cannot display the project on my website, you can still see the video of the working prototype on Youtube HERE.
Vayu / BREED
I had started off with data collection using IMUs. Later I became mostly involved with 3D Modeling, Design and Manufacture which encapsulated: Aerodynamics and Buoyancy-Weight distribution of the fish. We had designed the head and body of the fish such that it is aerodynamic and, has the proper buoyancy-weight distribution even while moving forward. In January 2020, Vayu achieved the GUINESS WORLD RECORD for being the fastest robotic fish.
ASRS 2.0
Automated Storage and Retrieval System for hand tools using the PRob 2R integrated with a custom electromagnetic gripper. The location of the tools will be determined with help of a camera integrated with a computer vision software. The robot determines the type of tool and stores/retrieves the tool to/from the allocated storage space. I was in charge of programming the robot and designing the gripper to pick up different tools.
ASRS 1.0
Automated Storage and Retrieval System for boxes on shelves. I was the team-leader for the project. The gripper arms were made from laser-cut Acrylic sheets with soft rubber to provide ample grip. A stepper motor with a rack and pinion was used to control the grips. There were an array of sensors which included IR sensor, ultrasound sensors and weight sensors to locate the box, place the arms the correct distance away and grip the box without damaging it. It was designed with redundancies to ensure the box does not get damaged.
Clearbot
Project Sponsored by the Gallant Ho Experiential Learning Fund. I worked in a team of 12 from different backgrounds and fields of study to design and test a trash collecting robot, to collect floating litter from the sea. A minimal viable product was tested in Bali, Indonesia.
Drag Reduction System
Worked with the Aerodynamics team to design an Active Drag Reduction System which would use single actuator to control the angle of two wings. They start off at two different angles with DRS turned off and switch to 15° angle (from the horizontal) with DRS turned on. It was only designed on Solidworks and was not manufactured due to budget and time constraints
Drone PID Control System
A PID control system set up using MATLAB (Simulink) to control a simulated drone.
Arcane Arcade
Worked in a team to create a videogame which was developed on Unity. It was targeted towards primary school children to promote recycling and other environmentally conscious behavior.
Drawing Tool (C#)
A simple drawing tool made using C# on Visual Studio. It could allow users to draw images with different colors and a button could allow the drawing to move and rotate.
RC Plane
An RC plane made using foam reinforced with carbon-fiber strips and a brushless DC motor. Two versions of the plane were made.
Irrigation System
A gearbox (for an irrigation system) designed using Solidworks for a school group project.
Miscellaneous
Line-Following Car
An Arduino-controlled car which ran using two rear brushless DC-motors and a trolley wheel up front. It used IR sensors to stay with the line and Ultrasound sensors to avoid collisions.
Flamenwerfer 1.0
A very simple single-hand-held “flamethrower”. Initially designed a 3D printed model to spend spare time during quarantine. I later resorted to using whatever I had available at hand to create a single-hand-held flamethrower which I could use and turn off to prevent wastage of fuel. I used a body spray for fuel, a lighter for the flame, a 3D printed nozzle, a string to spray the fuel and tape to attach everything together.
Open Ocean Camera (OOCAM)
Camera used to monitor marine life. I consulted with the team to help them design a housing for the electronics. It was designed to be modular, compact and user-friendly. 3D printed PLA was initially used to manufacture the part but later on it was 3D printed using Resin.
Door-Cam
I used an old Action Camera with a 3D printed housing to place it on the peephole and I used a power-bank to keep it powered on for longer. Currently working to improve the design and have the battery last longer.
Distance Visualizer (Arduino)
An OLED screen used to visualize distance between obstacle and the ultrasound sensor.
Acrylic Knife
Got bored at a workshop and used the spare time to laser cut Acrylic sheets and attach them using Chloroform to make a knife. I later sharpened and painted for better aesthetics..