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Usagi Electric (David)

I have an unhealthy obsession with vacuum tubes, but I'm terrified of high voltages. Low voltage tubes it is then!

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2 Projects
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usagi-electric-david
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This user joined on 10/29/2020.

3.9k
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This is a 1-bit vacuum tube computer running at just +24V and -12V.
Project Owner Contributor

1-Bit Vacuum Tube Computer

usagi-electric-davidUsagi Electric (David)

1.5k
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Using an Arduino to test vacuum tubes at just 24V.
Project Owner Contributor

Low Voltage Vacuum Tube Tester

usagi-electric-davidUsagi Electric (David)

Things I've Built

Breadboard Vacuum Tube Full Adder

I build a lot of projects on breadboards, but this was my most recent. It's a full adder using four 6DJ8 dual triodes. It looks like chaos, but it works rather well!

Vacuum Tube SR Flip Flop Display Piece

Once I figured out how to build a proper flip flop with tubes, I really wanted to build a display piece that could sit on my desk. This was the result.

4-Bit Hexadecimal Relay Calculator

Taking what I learned in the 10-bit calculator, I wanted to make something with a bit more readable display as well as test out building the individual components of the calculator on removable cards.

10-bit Binary Relay Calculator

This is a calculator that adds or subtracts to 10-bit binary numbers and is made out of just relays, capacitors and resistors.

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Retrocomputer built from TTL logic running CP/M with no CPU or ALU
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Novasaur CP/M TTL Retrocomputer

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This motor driver is able to control a motor using PID by I2C. Taking precise control of a motor have never been so easy.
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Smart Motor Driver for Robotics

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Response to Hackaday comments section: a 555 timer in Arduino form factor
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Trollduino V1.0

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A microprocessor built with TTL chips. In one square inch.
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1 Square Inch TTL CPU

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I have been exploring one bit CPUs. For the right application they may be worth knowing.
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One Bit CPUs

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TD4 CPU is a "4bit CPU that runs". It is very interesting for what can be done with so little.
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TD4 CPU

agpcooperagp.cooper

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A breadboard-able computer which uses only a single instruction - MOVE
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One-instruction TTL Computer

justin-davisJustin Davis

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Weave your own Core Memory to learn and hack!
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Core 64: Interactive Core Memory Badge

andy-geppertAndy Geppert

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Designing hardware is difficult. We Have a hardware platform that generates schematic and layout design files in a typical 10 minutes time.
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Simplify Embedded hardware designs

makarand-kapoorMakarand Kapoor

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Make a working reproduction of the venerable KENBAK-1 with a fully integrated development environment including an Assembler and Debugger.
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2:5 Scale KENBAK-1 Personal Computer Reproduction

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Self-Powered IoT Node for Environmental Sensing
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Recreation of the MC14500-based WDR-1-Bit-Computer
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WDR-1-Bit-Computer

pascalPascal

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Take an small robotic arm (MeArm) and a dev board with more processing power than necessary (Jetson TX2). What could go possibly go wrong?
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Ty the Typing Robot

elecia-whiteElecia White

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My attempt to create a CPU/MCU without transistors or relays
Project Owner Contributor

LLTP - Light Logic Transistorless Processor

dr-cockroachDr. Cockroach

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An 8-states Turing machine with 2 tapes, made using basic electronic components
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A two tapes Turing machine

olivier-bailleuxOlivier Bailleux

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The Smack-'n-Go Reverse Kitchen Timer
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cook'oo clock

sven-gregoriSven Gregori

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A replica of the OSI 300 from Ohio Scientific: a 6502 trainer from 1977 with 128 bytes of RAM and binary switch programming
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OSI 300 Replica

timTim

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a finite state machine based on the MC14500 Industrial control unit.
Project Owner Contributor

1 - bit ttl / cmos finite state machine

dave-collinsDave Collins

View all

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Dr. Cockroach wrote 10/26/2021 at 10:30 • point

Thank you for the follow and like of my #LLTP - Light Logic Transistorless Processor 

I think your tube and relay work is very cool :-)

  Are you sure? yes | no

Mitsuru Yamada wrote 09/24/2021 at 00:30 • point

Thank you for following me!

  Are you sure? yes | no

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