Electrical Engineer · Sonoma State University

Engineering ideas into working systems.

I’m Juan Ali Ruiz Guzman, an electrical engineer who enjoys taking multidisciplinary projects from architecture and prototyping through integration, measurement, troubleshooting, and validation.

Embedded Systems PCB Design Robotics RF Controls Networking Fiber Optics
Juan Ali Ruiz Guzman graduation portrait
ENGINEERING MODE BUILD · TEST
STATUS READY
EMBEDDED SYSTEMSROBOTICSRF ENGINEERINGNETWORKINGFIBER OPTICSCONTROLSPCB DESIGNEMBEDDED SYSTEMSROBOTICS
01 / ENGINEERING APPROACH

Design. Build. Measure. Improve.

I’m most interested in the point where theory becomes physical hardware: the moment a design has to survive real sensors, parasitics, tolerances, firmware, users, and test equipment.

02 / SELECTED WORK

Projects backed by hardware, data, and documentation.

Breathalyze-BG final prototype

FLAGSHIP · EMBEDDED SYSTEMS

VOC Breath Sensor Platform

A portable research platform combining custom PCBs, five VOC sensors, ESP32 firmware, wireless export, a guided interface, and CFD-informed airflow design.

  • 4Custom PCBs
  • 5VOC sensors
  • 50Approx. tests / charge
KiCadESP32C++BLEFusion 360CFD

ROBOTICS · COMPUTER VISION

Vision-Based Robotic Servoing

OAK-D perception, stereo depth, calibration, workspace filtering, inverse kinematics, ROS2, and physical RX-150 motion.

ROS2YOLOv5nDepthAIPython
Measured RF response

RF · MICROWAVE

433 MHz RF Design Collection

LNA, Wilkinson divider, stepped-impedance filter, mixer characterization, antennas, SDR, and end-to-end transceiver measurements.

ADSVNAS-ParametersSpectrum Analyzer
Additional RF reports are linked on the case-study page.
Grafana and IoT dashboard

IoT · CONNECTED SYSTEMS

IoT & Connected Systems Portfolio

A collection of IoT coursework spanning embedded sensors, Raspberry Pi, MQTT, databases, PHP, Grafana, networking, and browser-based device control.

MQTTMySQLPHPLinux
WDM optical system report

OPTICAL ENGINEERING

WDM Optical System Design

Optical architecture, wavelength planning, component trade studies, power-budget analysis, datasheets, sourcing, and BOM development.

WDMInGaAsLink BudgetDatasheets

CONTROL SYSTEMS

PID Self-Leveling Propeller Arm

A feedback-controlled balancing arm using an MPU6050, brushless motor, ESC, Arduino-based control, and PID tuning.

PIDMPU6050ArduinoBLDC + ESC
Automatic image thresholding

PYTHON · DATA ANALYSIS

Automatic Image Thresholding

Grayscale segmentation and statistical threshold selection using histogram-based analysis and within-class variance.

PythonImage ProcessingStatistics
03 / ENGINEERING DISCIPLINES

A broad electrical engineering toolkit.

01

Embedded & PCB

ESP32, ESP8266, PIC18, sensors, power electronics, KiCad, bring-up, assembly, and system integration.

02

Robotics & Vision

ROS2, RViz, MoveIt, kinematics, Jacobians, OAK-D, object detection, depth, and visual servoing.

03

RF & Test

ADS, VNAs, spectrum analyzers, S-parameters, mixers, filters, amplifiers, antennas, SDR, and propagation.

04

Networking & IoT

Linux, MQTT, TCP/IP, Wireshark, Packet Tracer, databases, web dashboards, and embedded connectivity.

05

Control Systems

PID feedback, sensor fusion fundamentals, motors, ESCs, system response, tuning, and validation.

06

Fiber Optics

WDM, lasers, detectors, couplers, filters, characterization, optical budgets, and component selection.

Juan outdoors with a snowman
04 / ABOUT ME

Curious well beyond the lab bench.

Engineering is a major part of who I am, but not the whole picture. I also enjoy working on cars, watching movies, playing instruments, traveling, skiing, and hands-on home projects. That same curiosity is what keeps pulling me into new technical disciplines.

05 / EXPERIENCE & EDUCATION

Engineering education plus real operational responsibility.

Warehouse Manager

Advanced Collision Repair Solutions

Operations leadership, inventory and equipment coordination, product support, technical troubleshooting, and hands-on work around industrial collision-repair systems.

B.S. Electrical Engineering

Sonoma State University · ABET Accredited

Project-intensive coursework in embedded systems, RF, robotics, networking, controls, fiber optics, signals, digital logic, and engineering statistics.

07 / CONTACT

Let’s build something that has to work in the real world.

Open to electrical engineering, embedded hardware, test, controls, robotics, RF, and multidisciplinary product-development opportunities.

Santa Rosa, Californiajuanaliruizguzman@gmail.combrethalyzebg.com