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Justin Davis

ph.d. electrical engineer - embedded systems developer

Toledo, Ohio
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9 Followers
24 Following
10 Projects
152 Likes
justin-davis
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This user joined on 09/28/2015.

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68
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A very small fully-functional interface for an Arduino Due emulating an Altair 8800
Project Owner Contributor

Altair 8800 front panel Ardiuno shield

Justin DavisJustin Davis

6.6k
58
11
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A breadboard-able computer which uses only a single instruction - MOVE
Project Owner Contributor

One-instruction TTL Computer

Justin DavisJustin Davis

2.8k
38
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Microcomputer that runs without a CPU
Project Owner Contributor

GTXL Gigatron clone computer with keyboard

Justin DavisJustin Davis

1.7k
16
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Connecting a floppy drive emulator (Gotek) to the Atari ST with a few small adapter boards.
Project Owner Contributor

Atari ST Floppy Drive Emulator Adapters

Justin DavisJustin Davis

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Incorporates an improved minimal-chip One Instruction CPU with a hardware-driven VGA output
Project Owner Contributor

One instruction VGA computer

Justin DavisJustin Davis

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Simulating the functionality of memristors using off-the-shelf parts to form a neural network crossbar array
Project Owner Contributor

Memristor Simulator for a Neural Network

Justin DavisJustin Davis

View all 10 projects

11.2k
375
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Let's solve this badge! Join this team to share and discuss the DEF CON 26 Badge
Project Owner Contributor

DEF CON 26 Official Badge Hacking

LutetiumLutetium

36.6k
107
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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

77.4k
291
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255
Just because! A home computer without microprocessor
Project Owner Contributor

Gigatron TTL microcomputer

Marcel van KervinckMarcel van Kervinck

42.5k
1.8k
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RepRap HELIOS is a highly printable SCARA 3D printer. It has an outrageous print area and can print on almost any flat surface.
Project Owner Contributor

RepRap HELIOS

Nicholas SewardNicholas Seward

32.2k
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Retrocomputer built from TTL logic running CP/M with no CPU or ALU
Project Owner Contributor

Novasaur CP/M TTL Retrocomputer

Alastair HewittAlastair Hewitt

18.3k
1.5k
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This project describes the use of Raspberry Pi as an IoT connected vital signs monitor. The HealthyPi HAT for Raspberry Pi used.
Project Owner Contributor

Connected Health: Open source IoT patient monitor

Ashwin K WhitchurchAshwin K Whitchurch

16k
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A microprocessor built with TTL chips. In one square inch.
Project Owner Contributor

1 Square Inch TTL CPU

roelhroelh

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How many TTL ICs do you actually need to output a VGA image?
Project Owner Contributor

World's Simplest TTL VGA circuit?

George FootGeorge Foot

8.2k
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3D Print yourself some of these magazines to keep your shop organized and boost your pick and place productivity!
Project Owner Contributor

SMD Component Magazines

Robin ReiterRobin Reiter

8.2k
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Test any electronic component with this pocket component tester
Project Owner Contributor

Component Tester in a Keychain

Akshay BawejaAkshay Baweja

7.2k
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I have been exploring one bit CPUs. For the right application they may be worth knowing.
Project Owner Contributor

One Bit CPUs

agp.cooperagp.cooper

5.3k
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A 16-bit CPU, with 16 registers, described in 66 lines of code - with HDL, emulators and a macro assembler.
Project Owner Contributor

OPC-5 - a CPU for FPGA, in one page

Ed SEd S

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A DIY true single-chip computer with video and C interpreter
Project Owner Contributor

ELLO 1A

Kn/vDKn/vD

3.4k
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Building a Drop-In Replacement for the MOS6526. Sponsored by PCBWay
Project Owner Contributor

74HCT6526

Daniel MolinaDaniel Molina

3.2k
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I've made a custom Magnetic Rotary Encoder using an AS5048A
Project Owner Contributor

Magnetic Rotary Encoder

Chris GChris G

2.8k
1.2k
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Bringing a vintage DIY binary counting computer back to life
Project Owner Contributor

Restoring the TRANSBINIAC computer

JohnJohn

2.2k
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A flexible, configurable video circuit for homebrew computers, with shared RAM access and easily-tunable timings
Project Owner Contributor

Configurable video output for 6502 computers

George FootGeorge Foot

1.6k
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An addressable LED based on discrete transistors
Project Owner Contributor

The TransistorPixel

TimTim

1.2k
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16-Bit TTL Compatible I/O Expander for the PiDP-11 and Raspberry Pi
Project Owner Contributor

PiDP-11 I/O Expander

Steven StallionSteven Stallion

524
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Inspired by the shell-swapping hermit crab, HERMITS uses interchangeable mechanical shells for tiny robots to do all sorts of things.
Project Owner Contributor

HERMITS

Ken NakagakiKen Nakagaki

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roelh wrote 10/18/2019 at 06:59 • point

Hi Justin, thank you for following the #1 Square Inch TTL CPU  ! however, that project was completed, and action is now at #Kobold K2 - RISC TTL Computer.

  Are you sure? yes | no

Ed S wrote 07/20/2017 at 06:18 • point

Thanks for liking our #OPC-5 - a CPU for FPGA, in one page project!

  Are you sure? yes | no

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