Hello! I'm Jeff, the Fubsy Polymath.

You might know me as tjscientist. I make things edible, audible & hackable.

Engineer since birth and soldering since five years old. Over 50 years later, I'm still building robots, synths, clocks, hacking tools and so much more.

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This website is where I (try to) keep track of all my projects, research, and ideas. Most items you see here are devices I've built, or acquired and refurbished over the years. Yes, I'm addicted. Addicted to anything old tech, new tech, steampunk, esoteric, strange and unusual, and on and on.

Have a look around. Drop me an email. Subscribe to my feed. Eventually I will get some YouTube videos up as well, but alas, finding the time is easier said than done and I still have not yet perfected that pesky time machine. Thanks for visiting! More about me →

Alcohol

Alcohol Brewing, Distillation, and Fermentation. Live

Analog Computers

Analog Computers Op-amps that solve equations — computing in continuous voltage. Live

Antennas

Antennas The hardware between the radio and free space — dipoles to dishes, BALUNs, matching networks, measurement gear, and satellite tracking. DIY build + commercial buy throughout. Live

Antique Medical Equipment

Coming soon

Antique Medical Equipment …and quack devices. A museum-style collection of antique medical, surgical & pseudo-medical apparatus — violet-ray wands, electropathic belts, radionics boxes, embalming machines, and early electrotherapy — studied device by device. Coming soon

Calculators

Calculators Mechanical & electronic calculators — Curta, the Adam Savage giant Curta, the Arithmos build, and more to come. Live

Clocks

Clocks Nixie, LED & mechanical — telling time with style. Live

Cyberdecks

Cyberdecks DIY and commercial cyberdecks — portable field computers with an integrated keyboard and screen. Clockwork uConsole & PicoCalc, the DFCD FreeCAD deck, and a full Raspberry Pi 5 PiFlux build with all add-ons. Live

Electronics

Electronics Designs for amps, synthesizers, effects, and so much more. Live

Firearms

Firearms Standard, historical & accurate movie replicas. Live

Firmware

Firmware Deep dives on hacking firmware — Evil-M5Project, Mayhem, ESP32 Marauder, Ducky Script — and the devices each runs on. Live

Food

Food Food & recipes — what's coming out of my kitchen. Live

Hacking

Hacking Hardware, RF & security tinkering. Live

Iconic Machines

Iconic Machines A museum-style collection of famous reproduced and collected machines (digital and electromechanical), each a multi-volume deep dive ending on the open-source build or artifact. Launch units: Enigma (Open Enigma) and the Apollo DSKY (Open DSKY). Live

JoJo Bee's Sweets

JoJo Bee's Sweets Honey, beeswax, maple syrup & small-batch baking from our family hives. Live

Music Studio

Music Studio Synths, effects & the home studio — building the sound. Live

Other Stuff

Other Stuff A place for things that have no place. Live

Radios

Radios Ham handhelds, HF rigs, DMR hotspots, shortwave & weather RX, CW gear, and a CubeSat simulator. Live

Research

Research Tech essays and investigations — Bad Apple, why hackers prefer Linux, CMATRIX, hacker tradecraft, and more. Live

Robots

Robots Robot Builds, Restorations, and Concepts. Live

Scanners

Scanners Scanners old & new, ham radios, mesh networks, and so much more. Live

Slide Rules

Slide Rules Computing before silicon — logarithms you can hold. Live

Television

Television The history, theory, and hands-on restoration and building of television — starting before the CRT with the Televisor, Baird's 1920s mechanical TV (Nipkow-disc scanning). Mechanical-TV deep dive + a build log for the MindSets NBTV Televisor kit (NBTV signal, live streaming, steampunk cabinet). Live

Test Equipment

Test Equipment From vacuum-tube testers to spectrum analyzers and everything in between. Live

Vintage Digital Computers

Vintage Digital Computers The machines that went discrete — minicomputers and microcomputers, studied to the gate and rebuilt on the bench. Live