ALEXEI BROWN

SDR (HackRF / Airspy / RTL-SDR) → real-time demod → GPU Whisper STT → searchable archive — fully local

Multi-layer software-defined-radio intelligence stack: captures RF across UHF/VHF/HF/marine/aviation bands, demodulates in real time (WFM/NFM/AM/SSB), transcribes voice traffic with faster-whisper on AMD ROCm, extracts entities (callsigns, locations) and archives everything into a searchable SQLite/FTS5 database. The DSP core was extracted into a standalone library (rfai-dsp) with anti-alias decimation, phase-continuous VFO mixing and an abstract SDR backend.

Stack: Python · PyQt5 · HackRF / Airspy / RTL-SDR (SoapySDR) · DSP (rfai-dsp) · faster-whisper + ROCm · SQLite/FTS5

Wearable ISR: glasses → home computer (face recognition) → phone — custom ONNX demographic models

Real-time computer-vision pipeline for smart-glasses use cases: MediaPipe Face Mesh (468 landmarks), ArcFace recognition, multi-face tracking at 30fps with a persistent identity library — all in-browser. Ships custom-trained 'Folkus' demographic models (2.3 MB INT8 ONNX, running via ONNX Runtime Web) that beat commercial APIs: gender 92.1%, age 5.37y MAE, ethnicity 72.2% across 7 groups. Camera glasses stream to a host computer that recognises faces and feeds AI context back via phone.

Stack: JavaScript · MediaPipe · ArcFace · ONNX Runtime Web · Custom ONNX models · WebGL

Heart rate, HRV and SpO₂ from a webcam — 100% in-browser rPPG

Browser-based remote photoplethysmography pipeline extracting heart rate, HRV, SpO₂ and stress indicators from regular webcam video. No wearable required — pure signal processing on a noisy real-world input.

Stack: JavaScript · rPPG · Signal processing · Browser ML

Real-time board scraper → NLP clustering → spike detection → auto-published sourced articles

Full-stack intelligence pipeline that continuously ingests public message boards, runs NLP for topic clustering, sentiment, authenticity and signal detection, flags narrative spikes via z-score detection, and auto-generates balanced, sourced journalistic articles with SEO/OG metadata. Live dashboard with rolling 24h/7d/30d windows; 5,400+ story artifacts and 14 auto-published articles to date.

Stack: Python · SQLite/FTS5 · NLP · LLM article generation · Cloudflare Pages

Lead discovery → auto-generated mobile-first sites → deployed at scale on Cloudflare ($0 hosting)

End-to-end small-business platform: scrapes Google Maps for businesses with reviews but no website, qualifies them, auto-generates personalised mobile-first HTML sites (17 design variants) and deploys each to tradez.au/<slug>/ on Cloudflare Pages. 9,264 leads scraped, 1,657 qualified, 1,655 demo sites deployed, 4,568 businesses in the public directory. Includes CRM, outreach tooling and a 3-agent orchestration system.

Stack: Python · HTML/CSS · Cloudflare Pages/Workers · Web scraping · Stripe/PayID

Android BLE scanner with device fingerprinting, GATT explorer and Claude AI analysis

Advanced Android BLE scanner: device fingerprinting, GATT explorer, signal traces over time, behavioural pattern detection (proximity, dwell, repeat encounters), and built-in Claude AI analysis of captured BLE data.

Stack: Android · Kotlin / Java · BLE protocols · Time-series analysis

Gesture and voice layer on top of tmux for running multiple AI agents

Reimagining terminal multiplexing for AI-agent workflows: gesture-controlled agent dashboard, voice commands, tab cycling between tasks/chat/hardware, pinch-to-click overlay, 10 themes, live mock agent state.

Stack: TypeScript · MediaPipe · Terminal UI · WebGL

Native Kotlin + custom OpenGL ES 2.0 renderer, deterministic physics — 2.6 MB APK

Slingshot gravity puzzle built native in Kotlin (not Unity) for a 2.6 MB APK with instant cold-start. Deterministic semi-implicit Euler integrator with substeps (verified <1% drift over 20s for stable orbits), trajectory prediction that matches the live sim exactly, and a 4-pass OpenGL ES 2.0 renderer with procedural planet shaders, glow bloom and particle systems. 20 handcrafted levels + 3 sandbox systems.

Stack: Kotlin · OpenGL ES 2.0 (custom GLSL) · Android SDK 24–34 · Deterministic physics