Designer. Maker.
Builder.
Roo Williams — feral.fyi
Projects
A proactive AI accountability coach that checks in over Telegram, remembers your goals and the history of your conversations, and nudges you to follow through. Supports voice-note journaling and a personal dashboard.
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.
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.
A tweetable aluminium baseball bat on a servo arm, triggered at live events. Featured on Hackaday.
An Arduino-based buzzer and scoring system for a fast-paced weekly pitching contest. Featured on Hackaday.
A phone-controlled photobooth built on Raspberry Pi. Featured on PetaPixel.
A desktop companion to help remote workers fight distraction and build focus. Featured on Develop3D.
Writing
Bio
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.
Elsewhere