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Justin Davis

ph.d. electrical engineer - embedded systems developer

Toledo, Ohio

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This user joined on 09/28/2015.

My Projects

A very small fully-functional interface for an Arduino Due emulating an Altair 8800

Altair 8800 front panel Ardiuno shield

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

One-instruction TTL Computer

Microcomputer that runs without a CPU

GTXL Gigatron clone computer with keyboard

The 2017 Hackaday Prize

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

Memristor Simulator for a Neural Network

A low-cost 128KB cartridge for selling modern games for the C64

C64 Production Cartridge

Projects I Contribute To

Let's solve this badge! Join this team to share and discuss the DEF CON 26 Badge

DEF CON 26 Official Badge Hacking

Where DIY DIP/SSI/MSI CPU makers meet and discuss other TLA (three letters acronyms)

Hackaday TTLers

Yann Guidon / YGDES

Projects I Like & Follow

The 2015 Hackaday Prize

Developing a small fuelless microwave thruster

EMDrive/satellite

The 2017 Hackaday Prize

Just because! A home computer without microprocessor

Gigatron TTL microcomputer

Marcel van Kervinck

The 2017 Hackaday Prize

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

RepRap HELIOS

Nicholas Seward

The 2016 Hackaday Prize

A digital clock built with Diode-Diode Logic (DDL), a quirky new logic family using only common diodes and passive components.

The Diode Clock

The 2016 Hackaday Prize

The DIY laptop built entirely from PCB

ELLO 2M

Official Hackaday Prize Entry

Measure brain activity with light

fNIR Brain Imager

ED-64 will be an 8-bit computer built with discrete components, and will feature a ferrite core memory (documented as a separate project).

ED-64: A discrete 8-bit computer

Science in your hand. A pocket-sized instrument capable of visualizing and exploring the world around you. (Iteration 8)

Iteration 8

Official Hackaday Prize Entry

Open source universal infrared remote control based upon the STM8S microcontroller with oooodles of connectivity options.

OpenIR - Infrared Remote Control

A minimalist computer for a minimalist language

MENTAL-1, a Brainfuck CPU

The 2017 Hackaday Prize

A discrete-logic CPU that fits on a prototype board, and is able to run complex C programs, all without microcode.

8-bit TTL CPU

Where DIY DIP/SSI/MSI CPU makers meet and discuss other TLA (three letters acronyms)

Hackaday TTLers

Yann Guidon / YGDES

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

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

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

One Bit CPUs

The 2016 Hackaday Prize

This is an attempt to create some hardware that may help to learn digital electronics and will be cheap enough

Educational TTL

Biomat >> 3D Printer

Biomat 3D Printer Conversion

The 2015 Hackaday Prize

Small Satellite Cluster to Observe the Earth

Anthelion

Can you use an old floppy disk as an infrared filter for iPod? Test apparatus include a radiometer and a Snap Circuits IR detector circuit.

Snap Circuits Science: Infrared Detector

Bits

BigEd wrote 07/20/2017 at 06:18

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

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