ECOSYSTEM

Read documents aloud, with a speed-reading window. dh81-talker reads Markdown documents (plain text with simple formatting marks) aloud on your own machine, using Piper neural voice models so no internet or cloud service is involved. It strips out formatting, skips code and tables, and inserts natural pauses at punctuation, with a choice of voices and adjustable speed. It also offers an optional desktop window that flashes one word at a time in sync with the speech (a speed-reading technique called RSVP), plus transport controls like pause, rewind, and seek.

Rust (plus a small TypeScript editor extension) · MIT

Offline local-corpus chatbot. dh81-oracle is a chatbot that runs entirely on your own machine with no cloud connection, answering questions about a folder of code and documents you point it at. It uses RAG (retrieval-augmented generation - it searches your files for relevant passages, then feeds those to a local language model so answers are grounded in your actual content) over Markdown, Rust, Python, and many other file types. Beyond the command-line tool, it ships a set of desktop apps built on the same engine, including a tabletop-RPG narrator, a world-building lore editor, and a session runner.

Rust · MIT

Web service for the Oracle. An HTTP service that puts a network-accessible interface in front of dh81-oracle, the local assistant that searches a collection of documents and answers questions about them with a language model running on your own machine. It exposes simple web endpoints so text-mode and web clients can search the corpus, ask one-off questions, or hold a multi-turn conversation, with each answer citing the source passages it drew from. It can launch and manage its own model server or connect to one already running, with optional token-based access control.

Rust · MIT

Terminal dashboard for signals from sky and network. quiktool is a keyboard-driven dashboard that runs inside a terminal window (a TUI, or text user interface) and pulls together many kinds of real-world signals in one place. With an inexpensive RTL-SDR USB radio receiver it tunes FM and AM stations, decodes HD Radio and government time signals (WWV and its international siblings), and tracks aircraft and ships; alongside that it shows live weather, earthquakes, solar activity, moon phase, and planet positions, plus a tab for sending end-to-end encrypted messages over Veilid. It is a hands-on way to see "everything is a signal" in action.

Rust · GPL-3.0-or-later

NOAA Weather Radio receiver and alert decoder. A Rust tool that listens to NOAA Weather Radio broadcasts using an RTL-SDR (a cheap USB radio dongle that turns your computer into a radio receiver) and decodes the emergency alerts carried on them. It reads SAME headers (Specific Area Message Encoding, the data bursts that carry the alert type, affected counties, and expiry time behind the Emergency Alert System), can filter to only your own county, and can also turn the slow-scan signals from NOAA weather satellites into actual weather images.

Rust · MIT

The cosmic and atomic cycle engine. dh81-cycles models 22 astronomical, solar, planetary, climate, and Earth cycles (such as the 11-year sunspot rhythm and the slow wobble of Earth's orbit) as simple sine waves, then scores when many of them peak together - a measure it calls "convergence." It can forecast which radio bands open and close as the Sun's activity rises and falls, turn the cycles into music, and search history for years with a matching cosmic fingerprint. A second half rotates the same idea onto matter, computing why iron is the most stable element and rebuilding the periodic table from first principles - all pure math with no internet or data files. Try the interactive visualization (a 60,000-year timeline with 164 historical events, plus an Atomic mode: the chart of nuclides, the 17 Standard Model fields, and a Particle Forge) - science guide.

Rust · MIT

Multi-mode radio receiver for cheap USB tuners. Turns an inexpensive RTL-SDR USB tuner (a small software-defined radio dongle, where decoding happens in software instead of fixed hardware) into a receiver for a wide range of signals: FM and AM broadcast, HD Radio, NOAA weather radio with emergency alerts, aircraft position beacons (ADS-B), ship location reports (AIS), and weather-satellite imagery, among others. One program picks the right decoder for the mode you choose and outputs audio, decoded data, or status that other tools can read. It is the hardware-facing radio backend that feeds the quiktool dashboard.

Rust · GPL-3.0-or-later

HD Radio decoder in Rust. A pure-Rust receiver for HD Radio, the NRSC-5 digital signal that many FM and AM stations broadcast alongside their normal analog sound. Fed raw radio samples from an inexpensive RTL-SDR USB dongle, it runs the full decoding chain - locking onto the signal, correcting errors, and reconstructing the compressed digital audio - then plays the result and pulls out station name, song title, and artist. It rebuilds the original C nrsc5 program entirely in Rust with no external C audio libraries.

Rust · GPL-3.0-or-later

Radio time-signal decoder. wwv-rs listens to the time-signal radio stations that national labs broadcast (such as WWV in the USA or DCF77 in Germany) and turns those beeps and pulses into a readable date and time. It works with an inexpensive RTL-SDR, a small USB radio receiver that lets a computer tune into radio waves, and it decodes nine different international standards entirely in Rust with no external C code. Use it as a command-line program called "wwv" to check your local reception, or embed it as a library in a larger software-defined-radio project.

Rust · MIT

Talk to a $30 radio dongle from Rust. RTL-SDR is a family of low-cost (around $30) USB dongles that act as software-defined radios - receivers whose tuning and decoding are done in software rather than fixed hardware, letting one device pick up FM radio, aircraft signals, weather-satellite imagery, and more. This library lets Rust programs find, open, and control those dongles: listing connected devices by serial number, tuning frequencies, and reading the raw radio samples to process. It is a Rust port of the long-established Osmocom rtl-sdr C library and ships a documented FM-radio example you can run end to end.

Rust · MPL-2.0

Iterative paragraph distiller. A command-line tool that takes blocks of text and repeatedly trims them, dropping about one sentence per pass, until each paragraph becomes a single sentence, then compiles those into a short overall thesis. It runs the summarisation on your own machine using ONNX models (a portable format for pre-trained AI language models) rather than calling an outside service, and reads plain text, Markdown, or JSON. It ships with a few model choices plus a training pipeline for fine-tuning a custom one.

Rust · MIT

USB phone backup over the terminal. dh81-backup (its built program is named phonebak) is a text-based tool that detects a phone plugged in over USB and copies its contents to your computer, with no iTunes or Android "adb" desktop software needed. It speaks each phone's native USB protocol directly - the iPhone backup and crash-report system for Apple devices, and the ADB wire protocol for Google Pixel - and saves the result as files plus a JSON record describing what was captured. Backups are currently stored unencrypted, so they should live on an encrypted disk.

Rust · MIT

Multi-source music player. dh81-jockey plays music from several different sources - your own local files, internet radio, a TIDAL streaming account, and text-to-speech reading of documents - all through a single shared interface called the AudioSource trait, a common contract that lets each source be searched, browsed, and streamed the same way. It ships as both a command-line player and an optional graphical app, so other programs in the ecosystem (such as quiktool and the Deadband game) can offer audio playback without re-solving how to talk to every source.

Rust · MIT

Real-world terrain for Vintage Story. A mod suite that turns real-world geographic data into playable terrain inside Vintage Story, a block-based survival sandbox game similar to Minecraft. Rust code reads public datasets - USGS elevation maps, OpenStreetMap roads, water, railways and buildings, and ESA satellite landcover - then generates game chunks, while a thin C# mod feeds them into the game through its own APIs, with an optional HTTP daemon that streams chunks on demand. King County, Washington is the current proving ground, aiming eventually at the Pacific Northwest to Denver corridor.

Rust + C# · MIT

A privacy-hardened code editor (quikedit). dh81-editor is a "soft fork" of Zed, a fast graphical code editor, shipped under the binary name quikedit. A soft fork tracks the original project closely but layers its own changes on top: here those changes rebrand the app, turn off all telemetry and crash reporting (the network calls are removed at the source, not just disabled), trim other automatic phone-home traffic, and set sensible defaults like a built-in AI coding assistant and skipping huge build folders. It exists so the ecosystem has a writing-and-coding tool it fully controls and trusts.

Rust · GPL-3.0-or-later

A "telephone game" for synthetic voices. This tool speaks a set of test sentences with a text-to-speech voice, optionally adds noise to imitate a poor radio channel, then listens to the result with a speech recogniser and measures how much the words changed - a digital version of the children's "telephone" game. The change is scored as word error rate and character error rate (how many words or letters differ from the original, where 0 means a perfect match), and a pass threshold decides which voices are clear enough to become spoken characters in the Deadband game world. Everything runs locally and offline.

Rust · MIT

Guided stem-production assistant for FL Studio. meristem coaches a solo musician through making music in stems (the separated instrument tracks of a song: drums, bass, vocals, and so on) alongside FL Studio, a popular music-making program that stays the actual audio engine. Today it can run an offline release-quality gate that measures a finished track's loudness and peak levels and reports what each streaming service (Spotify, Apple Music, YouTube, and others) will do to it, scaffold a project file, and drive a live clip-launching performance on an APC mini mk2 hardware pad-grid or an on-screen stand-in.

Rust · MIT OR Apache-2.0

NASA space-weather data client. dh81-iswa pulls heliophysics time-series data - measurements of the Sun, solar wind, and Earth's magnetic environment - from NASA's CDAWeb HAPI service, a standard public web feed for space-weather data. It reads data only (no writing, no storage of its own), keeps a local cache of recent responses to avoid hammering the server, and limits how often it asks. It is the space-weather counterpart to noaa-wx-rs, giving the ecosystem a clean way to bring in feeds like solar X-ray flux and geomagnetic storm indices.

Rust · MIT