I'm a control systems engineer, programmer, designer, and developer based in the San Francisco Bay Area with expertise in motion control, dynamic systems modeling and simulation, and data analysis I have experience working in the disk drive and energy storage industries. My strengths are my focus, persistence, and passion for learning.

Projects

Wafer stage

Semiconductor manufacturing equipment motion control

Motion control system for nanometer-level precision wafer scanner

Learn more

Residential battery

Network connected residential battery

An energy storage system for reducing energy costs through peak load reduction and demand response for residential and commercial applications

Learn more

Disk drive

Disk drive servo track writing

Manufacturing process for hard disk drive servo track writing

Learn more

Portfolio

Inkscape globe plugin

Inkscape globe plugin

An Inkscape plugin for rendering globes with configurable tilt and rotation. Inkscape is an open source vector graphics editor.

View on Github

Qt Stopwatch

Qt Stopwatch

A stopwatch application created in Qt

View on Github

Qt flashcards

Qt flashcards

A flashcard application created in Qt

View on Github

Resume

Hoday Stearns
hodaystearns2@gmail.com
San Francisco Bay Area, California
EXPERIENCE

STAFF ENGINEER - HARD DISK SERVO WRITE
Western Digital is one of the largest hard disk drive manufacturers in the world.
Aug. 2014 to present
  • Developed and debugged firmware for servo pattern writing hard disk drives
  • Experience with: C/C++, lua, Matlab

RESEARCH ENGINEER - CLOUD ENERGY SYSTEMS
Panasonic is a leading Japanese electronics manufacturer. The Energy Solutions Center develops solutions that leverage the company's battery and solar panel product portfolio.
Oct. 2011 to Dec. 2013
  • Coded from scratch and tested the first version of our server software for controlling our cloud energy storage system
  • Responsible for specification, design, coding, and testing of server-side software for control of cloud energy storage (battery) system
  • Designed, coded and tested algorithm achieving 20% energy cost reduction for aggregation of energy storage resources
  • Experience with: Java, Python, MySQL, Linux, version control (subversion), build and test tools (maven), profiling (VisualVM), writing driver for custom protocol over TCP/IP, network protocol analysis with Wireshark

STUDENT RESEARCH ASSISTANT
The Mechanical Control Systems Laboratory is a research laboratory for control systems theory and applications for mechanical systems. Focuses include industrial automation and robotics, human mechatronics, and hard disk drive control.
Fall 2006 to Spring 2011
  • Researched high-precision motion control of a wafer scanner (semiconductor manufacturing robot)
  • Developed and tested control algorithms for vibration suppression, learning, controller tuning
  • Created models and did simulations with MATLAB and Simulink
  • Experience with: laser interferometry, linear motors, encoders, LabVIEW real-time and FPGA, control software, PCB design (Eagle), mechanical design (Solidworks), machine shop, device drivers, SPI, I2C, RS-232, sensors, IMUs, accelerometers, navigation algorithms (Kalman filter), filtering, signal processing

TEST SYSTEMS DEVELOPMENT INTERN
Illumina Inc. Hayward, CA
Illumina is a leader in genome sequencing and genotyping technology.
Summer 2009
  • Developed a product reliability test stand for the cluster generation system. The system had 24-hour monitoring of the product's temperature and flowrates using LabVIEW.

EDUCATION


Ph.D. Mechanical Engineering, May 2011
B.S. Mechanical Engineering, May 2006
Focus: Control / Mechatronics, Minors: Optimization, Math

SKILLS

Engineering
C/C++
Python
Java
Embedded systems / firmware
Microcontrollers / ARM
MATLAB
LabVIEW
SolidWorks
Eagle PCB
Control design
Modeling
Simulation
Signal processing
Sensors
Machine shop
Technical communication
Japanese

Web
HTML
CSS
Javascript
Bootstrap
jQuery
PHP
SQL
Photoshop
Illustrator

Contact