Electrical Engineering Portfolio

EMMANUEL CHE

Power Electronics, PCB Design and Layout, Schematic Capture, and Analog/Digital Circuit Design.

University of California, Riverside BS Electrical Engineering Graduation: June 2027 Costa Mesa, CA / Riverside, CA

Skills & Resume Highlights

Altium Experience

100+ hours

Schematic capture, PCB layout, and DFM for analog, digital, mixed-signal, and power electronics designs in Altium.

Hardware Validation

30+ hours

Bench validation of power rails, digital interfaces, and board behavior using oscilloscopes, DMMs, and Python during bring-up.

Power Tree Design

4+ designs

Designed efficient battery-powered power trees using bucks and LDOs, with component selection, power budgeting, and multi-rail distribution for custom PCBs.

PCB Assembly

10+ boards

Hand-assembled and reworked PCB prototypes for bring-up and validation, including solder, component, and connectivity troubleshooting.

Clubs & Organizations

UV Project — Underwater Vehicle Platform

Designing custom electronics for a compact underwater vehicle platform, contributing across power, control, sensing, telemetry, and hardware validation.

2026 - Present

Highlander Space Program — Student Liquid Rocket Team

Supporting a student liquid rocket team through the full PCB design cycle, from schematic capture and layout to hand assembly and hardware validation.

2024 - Present

Highlander Racing — Formula Student (FSAE)

Supporting PCB design and implementation for a student Formula SAE team in a real build, integration, and test environment.

2023 - 2024

Projects

Rocket Ground Control PCB

HSP
TOOLS
Altium STM32CubeIDE Python hardware scripting Saturn PCB Toolkit

Designed the complete hardware development cycle of the rocket ground control 4-layer PCB for Project Poseidon, UC Riverside’s first liquid rocket, including schematic capture, PCB layout, board assembly, bring up, hardware validation, and integration. The board was developed to serve as the local actuation and ignition interface between the bunker control panel and the propulsion hardware at the test stand, where it received remote commands over XBee radio, distributed 6V power and CAN communication to remote servo control nodes. It coordinated up to five servo channels for valve actuation, verified cartridge igniter continuity, controlled pyro valve ignition, and supported safe fill, fire, and abort operations. Because the controller sat directly in the command path between remote operators and propulsion hardware, the design required a strong focus on reliable embedded control. This system was used throughout static fire testing and later supported launch operations directly contributing to a First Place finish in its category at the FAR OUT 2025 competition in the Mojave.

UV Power + Control PCB

UV
TOOLS
Altium STM32CubeIDE Python hardware scripting Saturn PCB Toolkit

Designed a prototype 4-layer power and control PCB for a compact torpedo style AUV platform to establish the vehicle’s early electrical architecture and reduce integration risk before the final revision, including schematic capture, PCB layout, assembly, validation, and system integration. Built around a 4S LiPo battery input, it was designed to provide safe power entry with reverse polarity protection and controlled power sequencing, then distribute regulated power to an ESC rail, servo rail, Raspberry Pi, and supporting electronics inside a tightly packaged 100 mm hull. The board also includes a firmware controlled load switch on the servo rail so power to downstream loads can be enabled safely and shut down during fault conditions. It measures pack current through a shunt resistor and monitors pack voltage, allowing battery usage, power draw, and electrical health to be monitored during testing, with telemetry sent over CAN for broader vehicle integration. It also supports onboard SD card logging for recording system data during bring up and testing. During bring up, embedded C and python were used to validate PWM control, CAN messaging, telemetry, and logging. This board serves as a key step toward a buoy based AUV system designed to operate in calm water, detect and track selected objects, and relay useful data back to the operator through custom in house electronics.

Igniter Interface PCB

HSP
TOOLS
Altium STM32CubeIDE Python hardware scripting Saturn PCB Toolkit

Designed the 4-layer Igniter Interface PCB for an ethanol/LOX rocket ground system as a remote CAN connected ignition support and instrumentation node. It receives 24V power and commands from the pad controller, generates local 12V and 3.3V rails, powers and triggers an external spark igniter controller, switches a 24V heater, and acquires sensor data for real-time monitoring and feedback during ground operations. Using an STM32 MCU and external multi-channel ADC, the board supports conditioned analog sensing, local break wire and GPIO status monitoring, and reliable communication back to the main controller over CAN. The design required strong attention to protection, grounding, signal integrity, and dependable embedded control.

Photodiode Signal Conditioning Circuit

TOOLS
LTSpice

Designed and analyzed a photodiode based analog front end that converted an intensity varying light signal into a clean 0 to 5V output while meeting low output impedance and high frequency noise rejection requirements. The goal was to take the small current produced by the photodiode, convert it into a usable voltage signal, and condition it so it could be reliably read by later circuitry. The design used a transimpedance amplifier followed by a unity gain buffer, with component values selected to set the voltage range, reduce high frequency noise, and keep the output strong enough to stay below the required impedance target.

About Me

Hover or tap to flip.

Hey, my name is Emmanuel.

Most of my time goes into working with my student liquid rocket club and building my own personal electronics projects.

I like being close to real hardware, testing things, figuring out what broke, and making the next version better.

The work I keep coming back to most is power electronics and PCB design.

Those are the areas I want to keep growing in professionally as I keep building more serious projects.