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J

Hello! I'm Jeff, the Fubsy Polymath.

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

Engineer since birth — soldering at five, still building robots, synths, clocks & hacking tools. More about me →

✦ Newest deep dives

CubeSat Simulator

CubeSat Simulator Electronics

DL-44 "Heavy" Blaster

DL-44 "Heavy" Blaster Firearms

Mauser C96 Broomhandle

Mauser C96 Broomhandle Firearms

Scanners & Radios

Scanners & Radios Scanners & Radios

Categories ▾

Radio & RF

Radio SDR Ham Radio Scanner Antenna RF Wi-Fi Mesh Network

Security

Security Pentest RFID / NFC Reverse Engineering Cryptography

Computing

Vintage Computer Minicomputer Microcomputer Microcontroller FPGA Single-Board Computer Handheld Analog Computing

Build & technique

Restoration 3D Printing PCB Design Soldering Firmware Open-Source Hardware

Machines & objects

Robotics Clock Display Tech Firearm Replica / Prop Keyboard Instrument Amplifier

Food & home

Cooking Fermentation Beekeeping

History & science

Historical Aerospace Satellites Nuclear

Food

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

Alcohol

Alcohol Brewing, Distillation, and Fermentation. Live

JoJo Bee's Sweets

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

Electronics

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

Music Studio

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

Hacking

Hacking Hardware, RF & security tinkering. Live

Scanners & Radios

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

Test Equipment

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

Analog Computers

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

Slide Rules

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

Clocks

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

Robots

Robots Vintage personal robots — HEROs and Omnibots restored. Live

Firearms

Firearms Standard, historical & accurate movie replicas. Live

Other Stuff

Other Stuff A place for things that have no place. 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

Digital Computers

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

CubeSat Simulator

CubeSat Simulator Electronics

DL-44 "Heavy" Blaster

DL-44 "Heavy" Blaster Firearms

Mauser C96 Broomhandle

Mauser C96 Broomhandle Firearms

Scanners & Radios

Scanners & Radios Scanners & Radios

HackRF One

HackRF One Hacking

Flipper Zero

Flipper Zero Hacking

Bus Pirate 6

Bus Pirate 6 Hacking

Clockwork PicoCalc

Clockwork PicoCalc Hacking

Clockwork uConsole

Clockwork uConsole Hacking

GL-iNet GL-BE3600

GL-iNet GL-BE3600 Hacking

DSTIKE Hackheld

DSTIKE Hackheld Hacking

M5Stack Cardputer ADV

M5Stack Cardputer ADV Hacking

M5Stack Cardputer Zero

M5Stack Cardputer Zero Hacking

M5Stick S3

M5Stick S3 Hacking

OpenSourceSDRLab PortaRF

OpenSourceSDRLab PortaRF Hacking

Nyan Box

Nyan Box Hacking

Wi-Fi Pineapple

Wi-Fi Pineapple Hacking

ESP32 Marauder

ESP32 Marauder Hacking

Ducky Script

Ducky Script Hacking

Parrot OS

Parrot OS Hacking

Hacker Tradecraft

Hacker Tradecraft Hacking

Antennas

Antennas Hacking

Fender Rhodes Stage 88

Fender Rhodes Stage 88 Music Studio

Test Equipment

Test Equipment Test Equipment

LED

Mechanical

Mechanical Clocks

Meter Movement

Meter Movement Clocks

Nixie

Numitron

Numitron Clocks

Scope

TIX

FreeWili (DC32)

FreeWili (DC32) Electronics

Multi-Pass (DC27)

Multi-Pass (DC27) Electronics

Supercon 6 (2022)

Supercon 6 (2022) Electronics

Whale Tail (FreeWili)

Whale Tail (FreeWili) Electronics

Hammond B-3

Hammond B-3 Music Studio

Altair 8800

Altair 8800 Digital Computers

PDP-8/I

PDP-8/I Digital Computers

Heathkit HERO 2000 (ET-19)

Heathkit HERO 2000 (ET-19) Robots

Omnibot 5402

Omnibot 5402 Robots

DSKY

DSKY Iconic Machines

Heathkit HERO 1 (ET-18)

Heathkit HERO 1 (ET-18) Robots

Heathkit HERO Jr (RT-1)

Heathkit HERO Jr (RT-1) Robots

Enigma

Enigma Iconic Machines

History

History Slide Rules

Using Slide Rules

Using Slide Rules Slide Rules

Loofbourrow

Loofbourrow Robots

Ruckus Game Over

Ruckus Game Over Hacking

AWOK Dual Touch V3

AWOK Dual Touch V3 Hacking

PWNagotchi

PWNagotchi Hacking

iCopy-X

iCopy-X Hacking

Conte Lethal Injection Attack Droid

Conte Lethal Injection Attack Droid Robots

Food

THAT — The Analog Thing

THAT — The Analog Thing Analog Computers

Heathkit EC-1

Heathkit EC-1 Analog Computers

Heathkit ES-400

Heathkit ES-400 Analog Computers

E-11 Stormtrooper Blaster

E-11 Stormtrooper Blaster Firearms

STEN Gun

STEN Gun Firearms

The Demon Core

The Demon Core Other Stuff

Brewing

Brewing Alcohol

Distilling

Distilling Alcohol

JoJo Bee's Sweets

JoJo Bee's Sweets JoJo Bee's Sweets

@tjscientist