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Geronfir/README.md

Geronfir

Lexiclock build Lexiclock release

Android (Kotlin) + embedded + Linux-tooling developer — I build, test and ship real software from an Android phone. No laptop, no PC.

I develop entirely on an Android phone: a full Linux environment via Termux + proot (Debian), a persistent tmux workspace, ESP32-S3 firmware flashed over Wi-Fi OTA, and GitHub Actions as my build machine. Everything below was written, compiled, tested and released from that device.

Constraints force discipline — no desktop IDE means scripted, reproducible builds; a small CPU and tight RAM mean lean, deliberate code. I ship anyway.

Featured work

Voxnova-esp32 — real-time AI voice assistant on an ESP32-S3: I2S mic in, audio streamed to the Gemini Live API through a Cloudflare Workers + Durable Objects relay, spoken reply out. C++/PlatformIO firmware, TypeScript edge layer, Python flash tooling. Adapted from Nova AI.

Lexiclock — Android home-screen widget that spells the time in words. The time-to-words engine is pure Kotlin with no Android imports, so all 71 unit tests run on a plain JVM in CI. Jetpack Glance, Material 3, offline-first, no background service.

Bifold.yazi — Yazi plugin that gives the terminal file manager a dual-pane layout, with a runtime flip between side-by-side and stacked, pane resizing, and cross-pane copy/move. Pure Lua, no external binaries.

geronfir.github.io — portfolio with case studies for the projects above.

Stack

Kotlin · Android · Jetpack Compose / Glance · Python · C++ / PlatformIO · TypeScript · Lua · Bash · Linux (Termux, proot) · ESP32-S3 · Cloudflare Workers · Git · GitHub Actions

Contact

Email · Portfolio · GitHub

Built from an Android phone. Yes, really.

Popular repositories Loading

  1. Bifold.yazi Bifold.yazi Public

    Yazi plugin: dual-pane split view with switchable orientation (side-by-side or stacked), pane resize, and cross-pane copy/move. Fork of terrakok/split-tabs.yazi.

    Lua 2

  2. Geronfir Geronfir Public

    My GitHub profile README — Android/Kotlin + Linux-tooling dev, shipping from a phone.

  3. Lexiclock Lexiclock Public

    LexiClock — Typographic Android home-screen widget that spells the time in words. Jetpack Glance, pure-Kotlin engine, Material 3, 71 unit tests.

    Kotlin

  4. Geronfir.github.io Geronfir.github.io Public

    Personal portfolio — Android-only developer

    HTML

  5. Split-Tabs.yazi Split-Tabs.yazi Public

    Forked from terrakok/split-tabs.yazi

    Lua

  6. Voxnova-esp32 Voxnova-esp32 Public

    Real-time AI voice assistant on ESP32-S3 microcontroller powered by Gemini Live API & Cloudflare Workers. Adapted from Nova AI.

    Python