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Min (@dhdxkhsk-a11y)

Senior Systems Software & Assistive Interface Engineer.
Focusing on low-latency OS accessibility abstractions, tactile refreshable braille drivers, and deterministic text rendering engines.

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 [ Low-Latency UI IPC ] [ Screen Reader Bridges ] [ Rust / C11 ]

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🧭 About Me

I design and build runtime infrastructure where operating systems meet assistive input/output hardware.

My primary engineering focus centers on closing the latency gap between graphical display servers and assistive technology clients—specifically screen readers, refreshable braille terminals, and head-tracking pointing devices. I believe accessibility should never be treated as an afterthought or a high-level UI patchwork; it belongs in the systems layer, built with deterministic memory management and zero unnecessary IPC hops.

When I am not tracing kernel input events or writing SIMD-accelerated text shape parsers, you will find me soldering custom split ergonomic keyboards, experimenting with analog tape loops, or bikepacking along gravel backroads.

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🛠️ Technical Competency

Languages & Runtimes

Category	Primary Technologies	Secondary / Exploring
Systems Programming	Rust, C11, C++20	Zig, Nim
Userland & Scripting	Go, TypeScript, POSIX Shell	Python 3, Lua 5.4
Web & Embedded Standards	WebAssembly (SIMD), WAI-ARIA 1.3	WebGPU, WebRTC DataChannels

Platform Subsystems & Driver Architectures

Subsystem	Specialization	Key APIs & Protocols
Linux Accessibility	Direct AT-SPI2 bus IPC, evdev event tap	D-Bus, uinput, Wayland accessibility protocol extensions
Windows Platform	Native UI Accessibility (UIA/IA2) provider architecture	IAccessible2, WinEvents, Raw Input API
macOS Accessibility	Native Accessibility API wrappers	AXUIElement, CoreGraphics event taps
Embedded & Peripherals	Braille display controller communication	USB HID-Telephony / Custom Braille Protocol, UART / BLE

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🚀 Key Open-Source Projects

1. braille-bridge

A memory-safe, zero-allocation userland daemon for refreshable braille displays.

• Core Stack: Rust, hidapi, D-Bus / Windows Named Pipes.
• Implements translation tables for Unified English Braille (UEB) and Korean 8-dot Computer Braille at sub-millisecond conversion latency.
• Features pluggable transport backends for USB HID, Serial (UART), and Bluetooth LE.

2. subtext-engine

Deterministic glyph rasterizer and high-contrast text rendering pipeline.

• Core Stack: C11, FreeType, HarfBuzz, Software Rasterizer.
• Optimized for extreme low-vision rendering: zero halo artifacts, custom subpixel geometric expansion, and user-defined color separation curves.
• Zero GPU dependency required; runs deterministically on constrained embedded x86 and ARM platforms.

3. aria-lint-cli

Zero-runtime AST accessibility invariant analyzer for design systems.

• Core Stack: Go, tree-sitter.
• Statically verifies accessibility tree contracts, keyboard trapping invariants, and dynamic announcement live-regions directly inside CI/CD pipelines before bundling.

4. earcon-dsp

Spatialized directional audio cue synthesizer for non-visual desktop navigation.

• Core Stack: Rust, cpal, HRTF convolution filters.
• Generates 3D acoustic breadcrumbs and boundary feedback without interfering with primary speech synthesizers.

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🔬 Current Research & Exploration

• Implementing zero-copy memory buffers for Wayland accessibility tree updates under heavy DOM mutations.
• Benchmarking WebAssembly SIMD vs native SSE4.2 text layout algorithms for headless screen readers.
• Developing open-spec tactile vector graphic converters for consumer dual-cell refreshable braille pads.

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💻 Workstation & Tooling

[Hardware]
Machine   = Lenovo ThinkPad P1 Gen 5 (Custom RAM/SSD)
Displays  = 2x 27" 4K IPS (Running locked 200% Integer Scaling)
Keyboard  = Corne Choc Split (Low-Profile 36-key, Miryoku Layout)
Audio     = Beyerdynamic DT 770 Pro (80 Ohm) + Motu M2 Audio Interface

[Software]
Operating System = Void Linux (musl libc variant) / FreeBSD 14.1-RELEASE
Window Manager   = River (Wayland dynamic tiling compositor)
Terminal         = Foot / Alacritty
Editor           = Neovim (Hand-rolled Lua configuration, zero bloated frameworks)
Shell            = Zsh + Tmux

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📬 Connect & Verification

• Email: dhdxkhsk@gmail.com
• GitHub: @dhdxkhsk-a11y
• GitLab: @dhdxkhsk
• Hugging Face: @r3eaw3
• GPG Fingerprint: 9F8A 2B71 C4E0 813D 6D25 E4A9 72B0 11C8 40A5 E68F

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“Software is truly finished only when every single person can operate it without friction.”