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Ralphw

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

Ohio
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16 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

STEbus stuff

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

Curated by Ralphw

8
1

6502 stuff

The coolest 6502-related projects on Hackay.io

Curated by Ralphw

2
4

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

  • The 2017 Hackaday Prize
418.5k
1.9k
155
1.4k
Pi Zero-based open-source mobile phone (that you can assemble for 50$ in parts)
Project Owner Contributor

ZeroPhone - a Raspberry Pi smartphone

aryaArya

228.4k
2.6k
62
987
pcb mill built from garbage using basic hand tools and little money
Project Owner Contributor

PCB mill for under $10

shlonkinshlonkin

75.9k
2k
85
396
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
23.8k
5.3k
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
19.2k
54
5
45
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

7.7k
65
4
60
A Modular 4-Bit CPU Design
Project Owner Contributor

DDL4-CPU

daves-dev-labDave's Dev Lab

7.7k
123
13
80
A 65c816-based MiniITX motherboard.
Project Owner Contributor

Neon816

lenore-byronLenore Byron

  • Official Hackaday Prize Entry
7.2k
1.3k
3
49
A single-board computer kit with a 6502 controlled by a Propeller.
Project Owner Contributor

Propeddle: Software-Defined 6502 Computer

jac-goudsmitJac Goudsmit

6.7k
59
12
61
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

6.7k
33
2
39
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-beaconJesse Robinson (beacon)

3k
52
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
17
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

1.5k
31
0
9
Speech synthesis on a microcontroller. Talking projects, cheap as chips!
Project Owner Contributor

μTTS

greg-kennedyGreg Kennedy

  • Official Hackaday Prize Entry
1.4k
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

1.4k
16
2
11
65C02, 32K Flash ROM, 64K fast RAM, USB link to PC. Runs BBC BASIC, at up to 14MHz.
Project Owner Contributor

STEbus 65C02

keithKeith

1.2k
9
2
9
Bringing Halo style game play to Laser Tag Team Ops
Project Owner Contributor

Halo inspired laser tag (LTTO hack)

daveverleedave.verlee

977
6
0
7
A complete guide to building one of the coolest audio-modulated high voltage machines on the planet!
Project Owner Contributor

Making the Ultimate Class-E Musical Tesla Coil

zach-armstrongZach Armstrong

515
7
2
5
STEbus I/O slaves are much easier to make than masters. This board uses simple TTL only.
Project Owner Contributor

STEbus I/O prototyping board

keithKeith

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leylinazi99 wrote 06/28/2022 at 07:46 • point

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