David B.

• Designing a custom 4-layer PCB that connects to a Raspberry Pi to simplify wiring and improve signal integrity of 16 medium frequency level shifted outputs. Designing using Altium Designer and Autodesk Fusion 360. • Created a fork of open-source thermostat firmware and reverse engineered the mapping of data points between the Wi-Fi chip and the main control unit. Modified C code to adapt the firmware to a different device and enable automated remote control of the thermostat. • Modified a Python driver for the MPR121 sensor to detect capacitive touches through a non-conductive surface. Experimented with different electrode wiring methods to achieve lower capacitance and higher sensor sensitivity.

• Designed a flyback power converter to convert 100-240VAC to 12VDC, 2A. • Simulated the design using LTspice SPICE simulator software and made modifications to the primary clamp, feedback, and transformer components based on results to improve converter efficiency. • Assembled a prototype and tested it using an oscilloscope, digital multimeter, and an electronic load. • Created a custom printed circuit board (PCB) for the power converter using Altium Designer PCB Design Software. • Assembled converter by hand soldering surface mount and through-hole components. • Characterized prototype and PCB converter performance by measuring efficiency, output voltage accuracy, output voltage ripple, and peak MOSFET blocking voltage.

• Modified Allen Bradley PLC code and HMI programs on a BSL-3 pharmaceutical fermentation system to improve process efficiency, safety, and security. Assisted with validation of modifications during detailed system testing. • Designed, programmed, installed, and tested custom Allen Bradley PLC control system for data center HVAC units to improve temperature regulation and increase efficiency. This included tuning two PID loops to control the compressors and economizer on each unit.

• Designed, manufactured, and installed Siemens and Fanuc control systems for multiple automated aircraft drilling machines. The machines passed third-party inspections for safety standard compliance including UL508A, NFPA79, NFPA70, EN60204, and ISO10218. • Created complete documentation of my designs using SolidWorks, SolidWorks Electrical, and Microsoft Word. This ensured that the systems would be maintainable and easy to work with throughout their lifetimes. • Programmed C on an embedded microprocessor for a multi-cable umbilical tester that tested 250 wires in less than 5 seconds. Collaborated with a small team to deliver this custom product from scratch in less than 12 weeks.

• Authored test plans that were executed by pilots and operators on Boeing B-1B aircraft during more than 30 hours of flight test. These tests examined the functionality and accuracy of new and existing capabilities for two major Air Force acquisition programs. • Analyzed recorded flight test data using MATLAB to characterize system accuracy. Discovered a safety deficiency and developed operator mitigation procedures that allowed the system to be used safely until a fix was implemented. • Wrote code in MATLAB to improve a data analysis tool. My updates made it easier for engineers to visualize and interpret test results, and to track system performance across multiple tests.

Graduate course in power semiconductors, converter circuits, converter control, and magnetics design.

summa cum laude