Continuously Variable Transmission
Using a dual-motor differential set up
( GitHub )Project Overview
Designed an automatic continuously variable transmission with a dual motor set-up, with each motors running at a different gear ratio, connected by a differential, to maintain a constant power consumption with varying loads.
My Contributions
Conceptualized and designed the automatic continuously variable transmission with the following features:
- Sketched and conceptualized the design of the continuously variable transmission for assembly.
- Developed the code in Arduino, C++, for the automatic detection of resistance to the output shaft, allowing each motor's power consumption to be varied when detecting different amounts of torque loads.
- First motor is running at a 1:1 gear ratio, with high speed and low torque, while second motor is running at a 4:1 gear ratio, with low speed and high torque. The differential allows for an infinitely variable torque variation on the output shaft by varying the power input to each motor.
Gallery
Dual Motor Torque Detection Programming Video
Top Down View of Design, Solidworks
Schematic of the Transmission
CVT in Operation, detecting a 1.2kg Load
Clinched Runner's Up in the Jacob's Design Showcase, University of California, Berkeley, in Mechanical Design
Smart Trolley
App-Based Trolley Lock Mechanism
Project Overview
Designed a smart trolley lock mechanism that allows a user to register one's own account on the Smart Trolley app, and scan a QR code to borrow and return trolleys via this app, eliminating the inconvenience of using coins and reducing the chances of trolley theft.
My Contributions
Conceived and designed a 3-D printed smart trolley mechanism housing with the following features:
- Main assembly housing to secure battery, ESP-32 and solenoid lock
- Bottom housing for optimum hall sensor positioning with clear acrylic front panel
- 1-way latch mechanism that slides smoothly into solenoid lock and houses the wire and chain assembly connecting the other trolley
- Lid with recess to house LED and sticker logo, covered with a clear acrylic plate
- Fillets on all edges to ensure smooth and cohesive design
Gallery
Smart Trolley Poster
Printing the housing
Smart Trolley Operation Video
Whizz Mobility
Food Delivery Trailer with Lid-Opening Sensor
Project Overview
Conceived and designed a trailer frame made from both 3-D printed parts and aluminium with the following features:
- 3-D printed steering mechanism with Ackermann steering geometry to ensure smooth turning operation
- Waterproof housing attached to aluminium chassis to store electrical components for the lid sensor
- Chassis made from extruded aluminium for high strength and load carrying capacity
Gallery
Ackermann Steering Mechanism Assembly, Fusion 360
Assembling the aluminium chassis
Steering Mechanism Operation Video
Custom LEGO Technic Project
Audi RS6 C8
Project Overview
Designed and built a remote controlled Audi RS6 C8
Features:
- Audi RS6 C8 Model with realistic dimensions and design
- Remote-controlled model
- Rear-wheel drive powered by 4 LEGO® medium motors
- 4 wheel steering powered by 2 LEGO® XL motors
- Individual multi-link suspension
- Working headlights and taillights
- Similar 60:40 front-rear weight distribution achieved by tactical positioning of 3 LEGO® battery boxes.
