feral

Designer. Maker.
Builder.

Roo Williams — feral.fyi

Nookshop

Commerce for one-off runs · 2026

Umami

A public, voice-first journal · 2026

Juno

A proactive AI accountability coach · 2026

EVERYMASK

A no-sew, reusable face mask · 2020

Taskbot

A desktop companion for focus · 2012

Nookshop
A lightweight commerce platform built for one-off runs — a single furniture piece, an art piece, a limited drop, not an ever-refilling catalog. The whole store can be run from a Telegram bot: add a product by sending a voice note and snapping a photo on your phone. No screens, no dashboard, no UI to fight with.
Umami
A public, voice-first journal. You record a short spoken note answering the day's prompt, drop it into a themed channel like gratitude, growth, or wonder, and it plays back over a soft music bed alongside everyone else's — daily reflection you speak instead of write, like leaving a voicemail for anyone who wants to listen. Notes can be exported into beautiful videos for social.
Juno
A proactive AI accountability coach you talk to through messages and voice, on a mission to connect people with themselves and prepare them to think with agility in a dramatically changing world. It builds you a dashboard that surfaces the patterns holding you back alongside your strengths, and sends a daily briefing with your priorities for growth and a personal letter celebrating your wins. Built with Liz Tran, executive coach to founders and CEOs and author of AQ, whose Agility Quotient framework shapes how Juno understands each person.
EVERYMASK
A no-sew, reusable face mask designed during COVID-19 using NASA’s ISRU principle — constructable from household materials. An adjustable headstrap eliminates ear pressure, a custom-formed nose piece creates a seal, and a replaceable filter clamp means only the filter needs washing. 3D-printable nose piece files on Thingiverse; a wire version works with a coat hanger and pliers.
Taskbot
A desktop companion to help remote workers fight distraction and build focus. Featured on Develop3D.
Bikestack 2026

A web app for cyclists to track bikes, components, and maintenance — logging service history and part wear, with ride and mileage sync from Strava. Public build pages let you show off a bike or sell parts.

Web design and development for a community mapping platform co-created with Cambridge, Cardiff, and Wrexham Universities. Funded by the AHRC, it helps communities co-create open data maps to reveal local need and shape better futures.

EVwhere 2018

Documenting EV culture in New York City. YouTube · Instagram

Tweetable Piñata Machine 2015

A tweetable aluminium baseball bat on a servo arm, triggered at live events. Featured on Hackaday.

Arduino Gameshow Host 2015

An Arduino-based buzzer and scoring system for a fast-paced weekly pitching contest. Featured on Hackaday.

Raspberry Pi Photobooth 2015

A phone-controlled photobooth built on Raspberry Pi. Featured on PetaPixel.

I design and build things at the intersection of software, craft, and ideas. Interested in tools, systems, and anything that blurs the line between digital, physical, and the more than human world.