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aarontrujillofz-ee/README.md

Hi, I'm Aaron Trujillo 👋

Electrical Engineering Graduate | Hardware Test | Validation | Embedded Systems | Python Test Automation

I'm an Electrical Engineering graduate from California State University, Fullerton, focused on hardware validation, embedded systems, sensor bring-up, ADC workflows, Python test automation, and technical documentation.

My engineering portfolio is built around one repeatable workflow:

Requirements → Circuit / Wiring → Firmware → Clean Telemetry → CSV Logging → Python Analysis → Plots → PDF Report → GitHub Evidence

I do not just post demos. I build projects that produce data, plots, reports, and documentation another engineer can inspect.

🔥 Current Strongest Proof

Project 5 — ESP32 Hardware Validation Test Bench

Real ESP32 hardware validation project using a DHT11 temperature/humidity sensor, LDR photoresistor voltage divider, and PIR motion sensor. The ESP32 prints clean CSV telemetry, Python logs and analyzes the data, and the project generates validation plots, summaries, and a PDF report.

Final run evidence:

Metric Result
Real ESP32 rows analyzed 150
Temperature range 29.00–30.90 °C
Humidity range 40–41%
Light ADC range 2432–2966
Motion states observed 0 and 1
Status result WARN, expected from 29.0 °C warning threshold

Engineering Focus: real hardware bring-up, sensor wiring, ESP32 GPIO/ADC, serial telemetry, threshold logic, Python logging, data validation, plots, and report generation
Tools: ESP32, Arduino/C++, DHT11, LDR voltage divider, PIR sensor, Python, pandas, matplotlib, ReportLab, CSV, Git/GitHub

🚀 Featured Engineering Projects

Project 4B — NTC Thermistor Temperature Test Bench

Wokwi Arduino Uno simulation using an NTC thermistor, ADC conversion, resistance calculation, Beta-equation temperature estimation, NORMAL/WARN/FAIL classification, Python analysis, plots, and automated PDF reporting.

Final run: 11 samples, 24.96–57.94 °C, 4 NORMAL / 3 WARN / 4 FAIL, final FAIL after crossing the defined 50 °C threshold.
Engineering Focus: sensor validation, ADC conversion, temperature classification, automated reporting
Tools: Arduino, Wokwi, Python, pandas, matplotlib, CSV logging, PDF generation

Project 4A — Simulated Hardware Test Bench

Arduino potentiometer validation bench that logs ADC voltage data, classifies readings as NORMAL/WARN/FAIL, and generates engineering plots and reports.

Final run: 48 samples, full 0–1023 ADC range, 0.000–5.000 V sweep, 38 NORMAL / 3 WARN / 7 FAIL.
Engineering Focus: ADC workflow, signal classification, validation reporting, repeatable test evidence
Tools: Arduino, Wokwi, Python, CSV logging, matplotlib, PDF generation

Project 3 — Virtual Embedded Sensor Data Logger

Python-based embedded-style sensor simulation that generates ADC readings, logs data, creates plots, calculates statistics, and produces automated engineering reports.

Final evidence: 480 readings across four runs with CSV logs, statistics, plots, and PDF reports.
Engineering Focus: embedded-style data logging, test automation, simulated sensor validation, report generation
Tools: Python, pandas, matplotlib, CSV files, PDF reporting

Project 1 — NTC Thermistor Voltage Divider

LTspice and KiCad-based thermistor voltage divider project with Python plotting and technical documentation.

Engineering Focus: circuit simulation, thermistor modeling, voltage-divider analysis, schematic/PCB workflow
Tools: LTspice, KiCad, Python, circuit analysis, technical documentation

🎯 Career Focus

I'm targeting entry-level roles in:

  • Hardware Test Engineering
  • Validation Engineering
  • Embedded Test Engineering
  • Electrical Engineering
  • Avionics Test / Automation
  • Manufacturing Test / Product Support
  • Engineering Operations

📫 Contact

Pinned Loading

  1. project-4b-wokwi-ntc-thermistor-temperature-test-bench project-4b-wokwi-ntc-thermistor-temperature-test-bench Public

    Wokwi Arduino Uno NTC thermistor temperature validation bench with ADC conversion, Python analysis, plots, and automated PDF reporting.

    Python 1

  2. ntc-thermistor-voltage-divider ntc-thermistor-voltage-divider Public

    Software-only NTC thermistor voltage divider project using LTspice, Python, and KiCad.

    Python

  3. project-4a-wokwi-simulated-hardware-test-bench project-4a-wokwi-simulated-hardware-test-bench Public

    Wokwi simulated Arduino Uno hardware test bench with ADC voltage logging, Python analysis, plots, and automated PDF validation reports.

    Python

  4. Project_3_Virtual_Embedded_Sensor_Data_Logger Project_3_Virtual_Embedded_Sensor_Data_Logger Public

    Python-based virtual embedded sensor data logger that simulates ADC readings, logs sensor data, generates plots, and creates automated PDF engineering reports.

    Python

  5. virtual-automated-electronics-test-station virtual-automated-electronics-test-station Public

    Python-based automated electronics validation and reporting system.

    Python

  6. project-5-esp32-hardware-validation-test-bench project-5-esp32-hardware-validation-test-bench Public

    ESP32 hardware validation test bench with DHT11, LDR, and PIR sensors, CSV serial logging, Python data analysis, plots, and PDF validation report.

    Python