Hello Google Wing

1. I know how to design, prototype, and test mechanical components by applying my years of CAD and 3D printing skills

   When I led Northeastern University’s drone research club (NUAV), I modeled tons of assemblies ensuring parts were functional, manufacturable, and assemblable. Peak examples include Tarsier and LIZARD. With Tarsier, I modeled in SolidWorks CAD a complex, 3D-printed bevel gear mechanism with 0.1mm of tolerance to move an Intel RealSense camera in sync with the pitch angle of our research drone. With LIZARD, I independently designed, modeled, prototyped, and tested five drone designs over seven months that resulted in an autonomous quadcopter platform 79% smaller than old club drones with a 4.1 thrust-to-weight ratio.

2. I can build and automate hardware tests to collect/analyze vast amounts of data

   While working at Amazon Robotics, we had a technical issue with how consistently our totes stopped on our warehouse conveyors. So, I investigated which conveyor parameters would lead to the fastest tote delivery time within a consistent range of stopping positions by running automated conveyor tests.

   I coordinated with vendors, wrote PLC programs, and calibrated my test setup to measure tote positions accurately for days on end. I also wrote Python scripts to parse hundreds of thousands of data points, find the most relevant data, and report the effective stopping positions. I then analyzed the data with ANOVAs and linear regressions, clearly and thoroughly documenting/communicating my steps along the way.

   Because of my work, conveyors are optimized for tote delivery, and people use my findings and automated test setup to assess more conveyor parameters and further enhance company productivity.

3. I know how to build brushless DC motors from scratch and simulate physical models!

   I am working on a personal project where a friend and I are 3D printing a BLDC motor with a partially complete stator to make our motor uniquely lightweight, yet functional.

   I have surveyed and uncovered the best materials for the rotor and stator. I understand the governing differential equations of BLDC motors, use them to model torque simulations with pyFEMM, and find optimal stator-rotor combinations. I also intuitively understand the core components of motor design, such as back irons, Halbach arrays, winding factors, slot-pole ratios, and more!

   I’ve constructed a prototype and troubleshot its performance deficiencies. I’ve used ESP32 microcontrollers to test the behavior of the motor given different PWM input signals, and collected data through a hall-effect sensor.

*As a side note, I’ve worked on a multitude of smaller projects using basic C++ and using servos to control robots.