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29ee010-programmer

Teensy 3.5 Arduino sketch to program 29EE010 Page-Write EEPROM devices

bikebling

Bling code for Burning Man bike with 31+36 DotStar LEDs

cadetwriter

Developed as a by-product of the IBM 1620 Jr. project, the Cadetwriter is a general-purpose ASCII terminal. It can be connected via RS-232 or USB to any mini, micro, mainframe, or replica computer as a terminal device. A commercial quality IBM/Lexmark Wheelwriter 1000 was adapted by interposing a circuit board containing a Teensy 3.5 microcontroller between the typewriter's keyboard and motherboard. Custom firmware controls the typewriter and communicates with the host computer. To support the full ASCII character set, characters not on the printwheel are synthesized using overprinted characters and "period graphics". The Cadetwriter can print up to 16cps and is a reliable, low-maintenance, low-cost substitute for Teletype, DECwriter, Diablo, Spinwriter, Imagewriter, etc. teleprinters.

distributed-webcam

ism-bracelet-reversing

Reverse engineering work on ISM-band LED bracelets

julies-race

Julie's Race, a C64 BASIC game recovered from 1983(?) floppy disk. I wrote this one afternoon on holiday in Orange, TX for the amusement of my niece Julie. If she could type a single letter correctly, four character-graphic "boats" would race across the screen accompanied by "music". She cheered for the green one.

junk

Just looking at configuration today

lair

LAIR Pro -- Logic Analyzer Interface for RC-2014 Pro Bus

led-ring-pyportal

PyPortal-based controller for an LED ring used for retroreflective chromakey

linc80cpmpack

The files and scripts used to build the official CF disk images for CP/M in LiNC80 with SCMon v 1.0.0

makesmith-joystick

Control a MakesmithCNC machine with a simple analog joystick

midiapps

MIDI apps for Mac OS X: MIDI Monitor and SysEx Librarian.

pico-powermon

Wireless 12VDC power monitor based on Raspberry Pi Pico W

pixmob-reversing

Work to reverse engineer PIXMOB BLE LED bracelets

remote-cambadge

Remote Cambadge extension for the Hackaday Superconference 2017 Cambadge

slowsoftserial

Teensy Arduino library for async serial communications at slower baud rates

slowsoftserial-test-packets-decoder

Saleae Logic2 extension to decode protocol packets used for testing SlowSoftSerial

spoon-knife

This repo is for demonstration purposes only.

v20_rom_dump

Failed attempt at a Teensy 3.5 Arduino sketch for dumping the memory of a small-scale NEC V20-based system, such as the IBM Wheelwriter 1000 typewriter upon which the Cadetwriter is based. The attempt failed because it turns out the glue logic chip on the Wheelwriter 1000 logic board interferes with this method of accessing the ROM.

wallofbender

Display screen for monitoring Bluetooth advertisements from DC25 Bender Badges

wallofjoco

Leader board and dispenser controller for Pirate Monkey badge aboard JoCo Cruise 2018

walloftio

Display board for Bluetooth advertisements from Trans-Ionospheric badges

wff-n-proof

6502 assembly routines for WFF'N Proof game, recovered from 1985 floppy

zorba-composite-video

Documentation for Modular Micros' composite video add-in board for the Zorba Portable Computer