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Ralphw

Interested in autonomous robots, self driving cars, Lisp, LOGO, 6502.

Ohio
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7 Followers
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ralphw
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Who I Am

I went to a technical school in Cambridge, then worked at another technical school in Pittsburgh. I was happy to have spent time on self-driving car projects, as well as other efforts along the way.

Did a lot of IT consulting as networks of computers became widespread within companies.

Why I'm on Hackaday.io

Interested in the projects here.

C LISP java robots machine vision ai scheme arduino APPLE2 6502 STEbus midi synthesizers

This user joined on 07/26/2014.

My Lists

6502 stuff

The coolest 6502-related projects on Hackay.io

Curated by Ralphw

1
4

STEbus stuff

Systems using the STEbus - a backplane architecture that uses Eurocard connectors (familiar if you use Nubus)

Curated by Ralphw

7
0

My Pages

  • Pre-MIDI Music for the Apple II (2/2)

    03/14/2022 at 00:13 • 0 comments

    The Alpha Syntauri demo - a system the appeared on the marketplace in the early 1980s as well - is listed below.  Many models had a velocity-sensitive keyboard.

  • Pre-MIDI MUSIC for the Apple II (1/2)

    03/13/2022 at 23:55 • 0 comments

    I have a small collection of keyboards designed to plug into the Apple II.


    The Passport Designs Soundchaser keyboard is a four octave keyboard, typically paired with the Mountain Computer Music System board set.  It can do 16 voices, in any combination of 8-bit waveforms.

    First, the Passport Designs demo: (link to YouTube)


    Visit https://hackaday.io/page/11929-pre-midi-music-for-the-apple-ii-22 for the next demo.

View all 2 pages

Things I've Built

Navlab-1

Self-driving car project at Carnegie-Mellon University. Project involving a team of about 25-25 people, grad students, faculty and staff. My roles involved unix administration and backplane optimization for onboard Sun servers.

Projects I Like & Follow

225.1k
2.6k
62
981
pcb mill built from garbage using basic hand tools and little money
Project Owner Contributor

PCB mill for under $10

shlonkinshlonkin

74.9k
2k
86
394
Spartan 6 FPGA Shield includes SPI Configuration Flash, Breakout Headers, SRAM, programmable from Arduino or SPI Programmer
Project Owner Contributor

Arduino-Compatible FPGA Shield

technolomaniactechnolomaniac

  • The 2016 Hackaday Prize
22.7k
4.2k
12
91
Replicate an Apple-1. Or an OSI Challenger. Or something else. Design your own 6502 computer by programming it.
Project Owner Contributor

L-Star: Software-Defined 6502 Computer

Jac GoudsmitJac Goudsmit

  • The 2018 Hackaday Prize
17.1k
52
5
44
Homemade low cost CPLD dev board (Arduino STM32F103 and Altera MAX II EPM240/EPM570 CPLD). Two dev boards into one.
Project Owner Contributor

Arduino + CPLD = CPLD Fun Board!

Just4FunJust4Fun

7.3k
61
4
57
A Modular 4-Bit CPU Design
Project Owner Contributor

DDL4-CPU

Dave's Dev LabDave's Dev Lab

7.2k
121
12
77
A 65c816-based MiniITX motherboard.
Project Owner Contributor

Neon816

Lenore ByronLenore Byron

  • Official Hackaday Prize Entry
6.9k
1.3k
3
48
A single-board computer kit with a 6502 controlled by a Propeller.
Project Owner Contributor

Propeddle: Software-Defined 6502 Computer

Jac GoudsmitJac Goudsmit

6.3k
31
2
36
A custom 136 key mechanical keyboard, inspired by the Sun Type 5 keyboard, and the classic phone dial-pad.
Project Owner Contributor

Sundial Keyboard

Jesse Robinson (beacon)Jesse Robinson (beacon)

6k
56
9
56
A Z80 homebrew computer with 64KB SRAM & 32KB ROM (with BASIC), TMS9918A VDP (video) and AY-3-8910 PSG (audio)
Project Owner Contributor

LM80C Color Computer

Leonardo MilianiLeonardo Miliani

3k
50
6
17
DIP40: Xilinx ZYNQ-7000, HDMI, USB, micro-SD, 32MB LPDRR2, 16MB Flash
Project Owner Contributor

Soft Propeller +HDMI +USB

Antti LukatsAntti Lukats

1.6k
10
0
16
A Speech Synthesizer, SID Soundcard, and MIDI IN Realtime SID+AY Synthesizer for the Amstrad CPC!
Project Owner Contributor

Speak&SID CPC

Michael WesselMichael Wessel

  • Official Hackaday Prize Entry
1.3k
244
0
13
A general purpose interface PC interface that should be able to give a regular pc I/O interfaces that are commonly found on MCU-s.
Project Owner Contributor

PC general purpose interface

DL101DL101

1.1k
15
2
10
65C02, 32K Flash ROM, 64K fast RAM, USB link to PC. Runs BBC BASIC, at up to 14MHz.
Project Owner Contributor

STEbus 65C02

KeithKeith

363
6
0
4
A $9 computer, some simple C+ Code, and a Web Browser! What can we learn about the Internet of Things using only this handful of materials?
Project Owner Contributor

Internet Of Things with C.H.I.P

muhammedmuhammed

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