Samuel Scheffler

Garry's Mod running natively on Android phones and tablets, with touch controls, Steam download, Workshop addons and multiplayer.

354,804 downloads · 178 stars

GitHubLatest release

Half-Life 2, Portal and four more Source engine games as native apps on Meta Quest and PICO headsets, with no PC attached. One launcher imports the player's Steam files and updates in place.

18,406 downloads · 80 stars

GitHubLatest release

Half-Life: Alyx on a standalone Quest. It hosts a Linux runtime inside an Android app, translates the game's OpenVR calls to OpenXR and renders through Vulkan.

8,779 downloads · 71 stars

GitHubLatest release

Live trading on mention markets. It transcribes live audio, matches configured words and places orders on Kalshi or Polymarket. A Rust workspace with a React app and a GPU speech service. With Roy Vaid.

sonist.tech

A local 3D globe and 2D map over 93 public datasets, from earthquakes to ship traffic, that needs no API keys.

A satellite imagery explorer for the Exeter Astronomy club. Pick a place and a layer, scrub through time, compare periods and export. With Roy Vaid.

geotiles.techGitHub

Runs a trading bot for IMC's Prosperity 4 competition across hundreds of simulated days to show the spread of outcomes instead of a single replay.

Records Polymarket's five-minute crypto markets and their order books, and backtests strategies on them. With Roy Vaid.

GitHub

Pulse, motion and sound recovered from ordinary video, using five published computer vision methods. With Roy Vaid.

GitHub

Scores small-cap headlines for likely price impact from sentiment, event type, source and float. With Roy Vaid.

GitHub

Turns a TV episode into a 30 to 60 second narrated recap video.

Finds the same event listed on different prediction markets and computes the spread from live order books.

An iOS app for Exeter students with class schedules, Canvas homework, dining menus, widgets and a Watch app.

GitHub

The Student Council's ID system for attendance and elections, an app for The Exonian, and a student Q&A site.

BioAlignLife for Trustworthy LLMs in Healthcare-Oriented Settings. A benchmark for whether LLM agents stay aligned as a planted false fact spreads through their memory, retrieval and self-training.

Accepted at BioFM 2026, an IEEE ICDM workshop

Linear probes on Qwen3-8B's reasoning tokens that catch the model considering a deceptive move and then rejecting it.

Ran AV for school assemblies and visiting speakers.

Set up venues for each presenter and handled attendees' tech questions.

Props for an independent film and custom equipment for the Portsmouth Naval Shipyard.