Selection of Course Projects
Precision Desktop Lathe - Design and Construction
[Design of Machine Elements Project (2.72); MIT]
Task Completed: Designed and manufactured a precision desktop lathe able to cut with a <50-micron repeatability. It further passed three "death tests": dropping the machine from waist height, hitting the spindle with a sledgehammer (where the workpiece is held) to ensure the first failure point was an easy-to-replace bearing, and standing on the cross-slide of the lathe while actuating its motion in both horizontal directions.
Application: Advances in industries such as medicine and electronics often require precise components with low tolerances.
Interchangeable RC Car Design
[Manufacturing Course Project (2.810); MIT]
Overall goal: Develop a series of RC cars to interface with a single interchangeable control box, and race using one car body per lap.
Skills Obtained: Component design (SolidWorks) and integration, manufacturing including injection molding, thermoforming, waterjetting, machining, and assembly, collaboration on a team for a large project.
Result: 1st place in the race!
Motorized Robotic Vessel with Camera
[Engineering Design Capstone (ME424); Duke University]
Overall goal: Developed a robotic vehicle to remotely survey fish populations at the Duke Marine Lab.
Application: To assist in research of marine populations and by automating processes and data collection.
Skills Obtained: Machine design with customer interaction, manufacturing, watertight construction, testing buoyancy and stability, modeling (SolidWorks), collaboration on a team for a large project.
Pinewood Derby Racecar
[Dynamics Course Project (EGR123); Duke University]
Overall goal: Use insights from solving dynamics equations to design and make a winning racecar propelled only by gravity on a set track. (We won second place!)
• Established theoretical description of motion of pinewood derby car on a track of set slope and dimensions
• Created MATLAB time-marching Euler simulation to predict race time based on input parameters of vehicle weight, position of the center of mass, and dimensions. Predictions matched measured race times within 0.05 seconds
• Examined theoretical results to design and construct a Pinewood Derby car that finished in the top cars of our class section and advanced to the Final Race between class sections
Magnetic Levitation Device
[Control Systems Course Project (ECE283L); Duke University]
Overall goal: Develop a control system with an electromagnet to levitate a magnetic sphere inside a frame.
Outcome: A negative-feedback PID controller achieved position control for static height locations and for moving the ball along sinusoidal and square waves.
Skills Obtained: Electromechanical control systems, PID control, Simulink.
Hacking a Kitchen Scale Load Cell
[Mechatronics Project (2.737); MIT]
Overall goal: Wire a load cell to a stabilizing circuit and LabVIEW control with modulation/demodulation and FPGA to accurately measure weights.
Skills Obtained: LabVIEW and myRio, electrical measurements with oscilloscopes, circuit design, analysis of measurement linearity and drift over time.