Sameer Rahman standing among autumn trees

Electrical & Computer EngineeringJunior, Case Western Reserve

I like building things people can actually use, usually by way of an unreasonably hard side project.

  • Building: an ozone sensor board @ AtmoSense
  • Open to: hardware & embedded internships
Selected work · every project has a live demo All demos in Labs →
01 KiCad · C++ · PlatformIO 2026

HyperBrush

Electrical lead on a student startup building a powered toothbrush. I handle the motor drive, power and firmware. The details are under NDA, so the demo is a generic motor driver.

Electrical lead
role
Fall 2026
started
Motor · power · firmware
what I own
Try it live
02 KiCad · SPICE · JLCPCB assembly 2026

Ozone sensor board

During my hardware internship at AtmoSense, I redesigned the circuit board inside their ozone sensor, had it made, and tested it against real ozone.

Loading model…
41.9 × 48.3 mm
board size
262×
how much the sensor reacted to ozone
5 / 5
built boards that powered on
Summer 2026
internship
Try it live
03 ESP32 · C++ · FreeRTOS 2025

Wireless microscope

A Wi-Fi microscope camera. Open a web page on your phone and you get a live view, plus full-quality photos when you want them.

160×120
live view, 5 frames a second
1024×768
photo size
180 s
idle before it sleeps to save battery
0
apps to install
Try it live
04 Java · JavaFX · Maven 2025

Pacman, with greedy ghosts

A maze game I wrote in Java. The ghosts follow one simple rule: always step toward you. Rebuilt here so it runs in your browser.

19 × 19
maze grid
200 ms
between ghost moves
4
moves each ghost considers
Try it live
About

Hardware, firmware, and the bridges between.

I’m Sameer, an undergraduate at Case Western Reserve University studying Electrical and Computer Engineering.

This past summer I was the electrical engineering intern at AtmoSense, where I redesigned their ozone sensing board around a bare SAMD21 and took it from schematic to a manufacturing handoff. Before that, embedded firmware in the Jenkins Lab and generator diagnostics at Energypac in Dhaka.

On campus, I’m the peer advisor for the Electrical & Computer Engineering department, where I help fellow students sort out coursework, research, and the career paths inside ECSE.

I document what I learn here so future-me has somewhere to look it up (in case he forgets).