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John Croudy

Electronics, Computing, Synthesizers, Clocks. Rinse and repeat...

California
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10 Followers
7 Following
3 Projects
66 Likes
john-croudy
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This user joined on 01/11/2017.

2.8k
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16-bit computer system featuring a custom-designed CPU
Project Owner Contributor

LEO-1 Homebrew CPU

john-croudyJohn Croudy

1.5k
8
2
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A digital clock and frequency generator based on a Symmetricom X72 Rubidium oscillator.
Project Owner Contributor

Rubidium Atomic Clock

john-croudyJohn Croudy

217
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LEA is a free macro assembler for 68000 and LEO-1
Project Owner Contributor

LEA Macro Assembler

john-croudyJohn Croudy

43.2k
117
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Where DIY DIP/SSI/MSI CPU makers meet and discuss other TLA (three letters acronyms)
Project Owner Contributor

Hackaday TTLers

yann-guidon-ygdesYann Guidon / YGDES

Things I've Built

Rubidium Atomic Clock

Digital clock and frequency generator based on a Symmetricom X72 Rubidium oscillator.

LEO-1 Homebrew Computer

16-bit computer system built around a custom CPU. Work-in-progress.

Clementine 6L6

Vacuum tube hi-fi amplifier.

Flip-Dot Clock

GPS-controlled clock made from a flip-dot display from the back of a bus.

Delia

Modular analog synthesizer

91.4k
303
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Making my own automatic chessboard
Project Owner Contributor

Automatic Chessboard

phantom-chessboardPhantom Chessboard

55.1k
1.5k
27
259
Wearable prototype breadboard used as LED wristwatch
Project Owner Contributor

Breadboard Wristwatch

ingeInge

30.9k
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27
374
A low-power E-Paper weather display powered by an ESP32 microcontroller. Utilizes the OpenWeatherMap API.
Project Owner Contributor

ESP32 E-Paper Weather Display

lmarzenlmarzen

14.3k
95
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The PERSEUS-8 is the enhanced version of the minimum configuration type the PERSEUS-7 6502 computer
Project Owner Contributor

PERSEUS-8 homemade 6502 computer

mitsuru-yamadaMitsuru Yamada

12.8k
35
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A Working Replica of the classic 555 timer made using discrete components
Project Owner Contributor

Giant 555 Timer

rudraksha-vegadRudraksha Vegad

10.9k
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A SCPI programmable precision resistor
Project Owner Contributor

Programmable Precision Resistor

sebastianSebastian

10.5k
133
11
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An LED watch custom built into a late 1800s / early 1900s pocketwatch case.
Project Owner Contributor

LED Pocketwatch

spark-vulpesSpark Vulpes

9.7k
196
11
152
Modular Autonomous Quadruped Robot Project (Open Source)
Project Owner Contributor

LOTP Robot Dog V2

limenitis-reductaLimenitis Reducta

7.4k
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Modern take on TIL311 and reimagination of #PICTIL optimized for easier production and lower part count
Project Owner Contributor

reTIL

alexAlex

4.3k
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A simulator homage to old-school mini/mainframe systems with real lights and switches
Project Owner Contributor

PlasMa Mini-Mainframe Simulator

phil-tippingPhil Tipping

3.9k
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A smart watch based on STM32 & LVGL & FreeRTOS
Project Owner Contributor

OV-Watch: a STM32 smart watch

kingham-xukingham xu

3.2k
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A fully functional replica of Charles Babbage's Difference Engine No.2 with 3D printed parts
Project Owner Contributor

3D Print Babbage's Difference Engine No.2

mechredpandaMechRedPanda

2.5k
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A Watch with a quasi-analog always-on display, consisting of 240 concentrically arranged SMD LEDs, running 20 days before charging
Project Owner Contributor

LED Watch

arbinar.bin

2.5k
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open-source hybrid digital piano with MIDI and Ethernet
Project Owner Contributor

hybrid MIDI digital piano

greg-zweigleGreg Zweigle

2.4k
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I am making a full sized Challenger 4P reproduction, a 6502 based personal computer from the late 1970s.
Project Owner Contributor

OSI Challenger 4P Reproduction

michael-gardiMichael Gardi

2.2k
26
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My design for a desktop Calculator based on the original Nixie tubes IN-12, Walnut case, and Cherry-MX customized keyboard.
Project Owner Contributor

TORI Nixie Calculator

ohadharelohad.harel

1.5k
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A small tribute to the 80's game Elite. An Arduino+LCD shows the iconic tumbling Cobra Mk 3, plus some extras (other ships, clock mode).
Project Owner Contributor

ElitePetite

mark-wilsonMark Wilson

1.1k
17
6
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LEGO blocks for analog design
Project Owner Contributor

Op-amp building blocks

mihaicuciucmihai.cuciuc

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mihai.cuciuc wrote 03/01/2024 at 23:46 • point

Hi, John! Thanks for your interest in #Opamp building blocks!

  Are you sure? yes | no

Mitsuru Yamada wrote 04/29/2021 at 03:45 • point

Thank you for liking and following my #PERSEUS-8 homemade 6502 computer !

  Are you sure? yes | no

Jacob Still wrote 07/04/2019 at 05:48 • point

Hey John, Thanks for taking the time to like and follow my #DIYTIL311 project!

  Are you sure? yes | no

roelh wrote 06/23/2019 at 17:45 • point

Hi John, thank you for liking and following the #1 Square Inch TTL CPU  !

  Are you sure? yes | no

Ulysse wrote 04/23/2017 at 16:44 • point

And I love synths too !

  Are you sure? yes | no

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