Hardware

Avionics Hardware

I'm the Co-president and Avionics Hardware leader of Brown Space Engineering--a team of undergrads that designs open-source CubeSats. Our first satellite, EQUISat, launched in 2018. Our next satellite's mission is to be 1) an interactive satellite that can display anyone's message in space and 2) test perovskite solar cells for the first time in space.

I lead and manage a team of 15 undergrads to create the electronics systems of our satellites--radio, power, and control. My responsibilities include:

Being in charge of the preliminary systems design, including power and telemetry budgets and high-level block diagram for our new satellite
Part selection and design of schematics and PCBs
Working with the other leaders to ensure cohesive integration of all subsystems
Holding trainings for new members--KiCAD, digital and analog circuits, radio modulation and demodulation, and creating hardware for embedded systems

Design Samples:

Excerpt from Launch Application to NASA's CubeSat Launch Initiative program

System Requirements Review Slides

GitHub Organization Link

Printed Circuit Boards

Pufferfish Ventilation (Pez Globo): An Open-source ventilator project. Pufferfish aims to fight the COVID-19 health crisis by creating a fully open source, FDA-approved ventilator with easily sourced parts.

I designed the ventilator's interface PCB which serves as the interface between front-end user devices and the control MCU.

KiCAD Samples (for more, see GitHub Interface Branch)
GitHub Organization Link

Inductive Link Design

I designed a wireless power transfer link (inductive) for a pacemaker system and wrote a python script for calculating dimensions for appropriate PCB spirals for link.

Design Summary
Script

Cadence Virtuoso

I designed and simulated a delta-sigma ADC for robotic control systems applications.

Design Summary

CPLDs

4x4 Multiplier
Keypad encoding

Breadboarding

Successive Approximation Analog-to-Digital Converter
Dual Slope Analog-to-Digital Converter

FPGAs

Single Cycle Processor
Scrolling message board