PCBA Bring-Up & Debugging: 3-Phase Inverter ESC
Hardware & Tools: SMT Soldering, multimeter, PSU
Executed SMT hand-soldering for a QFN MCU on a custom electronic speed controller, successfully resolving solder bridges across various pins under a microscope.
Debugged a grounded motor phase by tracing the error back to a GPIO of MCU and flashed blank code to the MCU to resolve the error and validate the hardware.
Mixed-Signal Debugging: ESP32 ADC Calibration
Hardware & Tools: ESP32, Precision DMM, Voltage Dividers
Diagnosed heavy non-linear drift on a custom ESP32-based battery voltage monitor for a drone motor thrust stand.
Scaled the cell voltages into the ESP32’s linear region by reworking voltage dividers and calibrated the voltages in firmware against precision multimeter measurements.
Implemented a GitHub-sourced software calibration lookup table by tying the internal DAC to the ADC to push the silicon to its maximum precision limits.
Working on a Arduino Nano-based analog signal processing perf board to measure the cell voltages and send the data the to ESP32 board via UART
Avionics Bay Integration & Harnessing
Hardware & Tools: Ultimaker & Bambu 3D Printers, Heat-Set Inserts, Wire Harnessing
Executed the electromechanical packaging and physical assembly for the UBC Rocket avionics bay, specifically optimizing the layout to fit within a strict 4-inch diameter rocket airframe.
Specified mounting hardware and integrated heat-set inserts to ensure secure PCB retention under high flight vibration.
Managed the wire harnessing layout within these tight volumetric constraints, running extensive rapid prototyping cycles on Ultimaker and Bambu printers to validate radial clearances and mechanical tolerances before final flight-ready assembly.
