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Isaac Adjei

zaccesss
London ⇄ Birmingham, UK

Hi, I'm Isaac Adjei 👋

Electronic Engineering and Computer Science student at Aston University, Birmingham, working where hardware meets software. I design circuits and PCBs, write firmware from bare-metal C to Rust, build full-stack platforms and write free teaching material. Everything below is open source.

🌐 isaacadjei.me · 💼 LinkedIn · 📧 hello@isaacadjei.me

Featured

git-unlocked: a free Git curriculum in 12 sections and over 220 files, covering GitHub, GitLab, Bitbucket, Azure DevOps, Gitea, Forgejo and Codeberg on Windows, macOS and Linux. CC BY-SA 4.0 and archived on Zenodo.

PHAEMOS: an IoT predictive maintenance platform. ESP32, STM32, Arduino and Pico 2W sensor nodes stream telemetry to a FastAPI backend where an Isolation Forest flags anomalies before a machine fails. It also has a real-time TypeScript dashboard, a Rust edge gateway and KiCad hardware.

MELOPHOS: LED light bars that teach piano, with guitar next, in active development. An ESP32-S3 hub reads MIDI, a Rust engine scores every note and a browser Studio tracks progress. It is built for accessibility. I have monocular vision, so light-guided cues matter to me and to anyone who finds sheet music hard to follow.

isaacadjei.me: my portfolio of projects, research, a blog, an interactive lab and public stats, built with Next.js 16, React 19 and TypeScript. Its source is published after every deploy.

Hardware and embedded

Two-Stage Audio Amplifier: a TL071 active band-pass filter into an OPA551 power buffer driving an 8 Ω speaker. Simulated in Proteus, proved on a breadboard and built as a custom PCB.

NeoPixel LED Cube: a 4x4x4 WS2812B cube on an Arduino Uno with four animation modes, light-sensor brightness and button controls.

AVR-Zac: bare-metal C on the ATmega644P with state machines, interrupts, PWM and ADC, down to a reaction-time game and a Tetris melody.

More

Why sponsor me?

  • Keep git-unlocked free and growing for learners everywhere
  • Fund PCBs and components for PHAEMOS, MELOPHOS and new builds
  • Cover hosting as PHAEMOS and MELOPHOS go live
  • Give a student more time for open source work alongside a degree

Other ways to support

☕ Buy Me a Coffee · 🎨 Patreon

@zaccesss

5 monthly sponsors would cover hosting for PHAEMOS and MELOPHOS as they go live. They would also fund PCBs and components for new hardware builds and give me time to keep growing git-unlocked with new sections and interactive examples.

Featured work

  1. phaemos/phaemos

    Open industrial IoT platform for predictive maintenance: four sensor nodes, a FastAPI backend, Isolation Forest anomaly detection and a live Next.js dashboard. Reveal before failure.

    TypeScript 3
  2. melophos/melophos

    Open instrument learning platform: an ESP32-S3 hub lights the notes on any keyboard or guitar, logs every note and scores practice on a self-hosted server.

    Python 2
  3. zaccesss/git-unlocked

    Practical Git learning guide covering version control foundations, GitHub, GitLab, branching, collaboration workflows and advanced command line usage.

  4. zaccesss/astoncv

    Archived coursework edition of AstonCV, a CV database website in plain PHP and MySQL. Continued as Vitafolio.

    PHP 1
  5. zaccesss/two-stage-audio-amplifier

    A two-stage audio amplifier: active band-pass filter (TL071) into unity-gain power buffer (OPA551). Designed in Proteus, built on breadboard and PCB.

  6. zaccesss/neopixel-led-cube

    Adaptive 4x4x4 NeoPixel LED cube project with Arduino firmware, sensor driven brightness, button controls, animation modes, build docs and media.

    C++ 1

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  • Access to all private repositories: hardware design files, KiCad schematics, PCB layouts, coursework labs and study notes
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  • Monthly update on what I'm building across software, hardware and open source