Hi, I'm Essey Araya

I design and build solutions.

Projects

Contact Me

My Skills

Engineering Design

Web Dev

Data Analysis

Mechanical Engineering Projects

Tools: Autodesk Inventor, Altair Inspire FEA

Report

Chassis Design

During the Fall 2025 semester, I led a team of 3 in redesigning a solar car chassis to reduce weight, and improve factor of safety and manufacturability.

I evaluated 18 load cases using FEA to identify safe material removal, then refined the geometry by communicating with the manufacturing team to ensure reliable manufacturing.

The final design achieved a 32% reduction in mass while fulfilling all safety requirements and improving manufacturability.

Tools: Composite Materials, Mold Making, Universal Testing Machine, Excel, ANSYS ACP & FEA, 3D Printing, Stress-Strain Curves

Report

Composite Materials: Building an Aeroshell and a Battery Box

This project was completed during my summer 2025 internship at Berea College as part of the Solar Car team. I took ownership of designing and building a composite battery box and developed a scalable manufacturing approach for the solar car aeroshell.

I conducted coupon tests to evaluate strength to weight ratios of different composite layups and assess manufacturing quality, designed and fabricated female molds using 3D printed plugs. Design decisions balanced strength, weight, and manufacturability.

I achieved a lightweight composite battery box at 50% of the estimated budget and produced small scale aeroshell canopy.

Tools: OpAmps(LF353), Oscilloscope, Amplifier Circuit

Report

Electromyography: Building an Amplifier Circuit

An electronics project focused on measuring surface electromyography signals generated by muscle activity.

Utilized LF353 op amps to achieve sufficient gain while keeping noise low. I tested the circuit under different loading conditions to ensure the signal was stable and usable for analysis.

I chose electromyography for this lab project because of its impactful applications in prosthetics, medical diagnostics, and sport science.

Tools: PASCO Capstone, 3D Printing, Trigonometry, Mechanics

Video

Rolling Uphill? The Double Cone Illusion

A video showcasing why a double cone appears to roll uphill. I show how the center of mass actually moves downward visually and mathematically, revealing the geometry behind the classic “uphill cone” paradox.

This Project includes:

Video Motion Analysis using PASCO Capstone
Mathematical proof of the change in position of the center of mass with respect to time
Lagrangian of the System

Tools: Autodesk Inventor, Bambu Labs

Presentation

Jack Stand

Designed, prototyped and 3D-printed a jack stand for my final design and documentation project.

This Project includes:

Advanced CAD and 3D printing features
Dimension comparisons between design and printed part
Detachable handle system for convenient part replacement
Cost and waste analysis

Software Engineering Projects

Tools: HTML, SCSS, JavaScript, PostCSS

Live Demo View Code

Biscuté

A webiste that I co-built for a cookie company located in Addis Ababa, Ethiopia.

My main contributions include:

Responsive design with a joyful and delicious feel.
Alternative color theme switcher.
On-scroll animations.
Flip card effect for the product items.
On-hover enlarged product gallery.
About us page.
Submittable contact form, and more.

Tools: C++, Python, GitHub Actions (CI/CD), Pandas, Matplotlib

View Code

Drone Vertical Dynamics Simulation

Developed a physics-based simulation to model and validate the vertical flight dynamics of a drone.

Implemented a C++ simulation using Runge–Kutta integration to model motion under thrust, gravity, and drag. Defined simulation API through Drone.h, Integrator.h, and a shared State data structure.

Designed an automated CI/CD pipeline that builds and runs the simulation, verifies numerical results against analytical expectations, generates flight plots, and deploys validated results via GitHub Pages.

The framework is structured for future expansion to 2D and 3D dynamics, and real drone characteristics.

Tools: Python, Pandas, SQL, Numpy, Matpoltlib

Live Demo View Code

Technology Trends

As a Data Analyst, I collected data from various sources and identified trends for report on emerging skills.

This project includes:

Data Collection using API and Web Scraping.
Data Wrangling
Exploratory Analysis
Data Visualization
Dashboards
Presentation

Tools: HTML, CSS, React, JSX, OMDb API

Live Demo View Code

Movie Posters Vault

A movie posters search engine that allows users to search for and explore movie posters.

This project includes:

Collection of movies data using the OMDb API.
Search input that maps over the OMDb API and fetches the movie component that matches your search.
JSX component for a movie poster.
Responsive CSS design.

Who I am

Hello! My name is Essey Tesfamichael Araya. I'm a Sophomore, Engineering Physics, and Computer Science student at Berea College. My experiences include designing and testing composite structures for a solar car’s aeroshell and battery box, optimizing the chassis design, and conducting FEA for safety compliance.

On the software side, I’ve developed responsive web apps, including a site for Biscute (cookie company based in Addis Ababa), enhancing user experience and reach. If you’re a business looking to launch online or a professional wanting a portfolio site, contact me here.

Hi, I'm Essey Araya

My Skills

Engineering Design

Web Dev

Data Analysis

Mechanical Engineering Projects

Chassis Design

Composite Materials: Building an Aeroshell and a Battery Box

Electromyography: Building an Amplifier Circuit

Rolling Uphill? The Double Cone Illusion

Jack Stand

Software Engineering Projects

Biscuté

Drone Vertical Dynamics Simulation

Technology Trends

Movie Posters Vault

Who I am

My Certifications