Recent Projects

A cycle-accurate RCA CDP1802 COMX-35 rebuilt in SpinalHDL, with faithful NTSC, PS/2 keyboard, cassette I/O, and a cycle-exact simulator.

Comx-35 computer in an FPGA

winston-lowe Winston Lowe

An MC6803 (or 6801) Video Terminal taking full advantage of the Expanded Multiplexed Mode.

(Per)plexed 6803 Video Terminal

eric-poch Eric Poch

Build your own Leica M or Thread Mount Rangefinder now! (BOM typically under $250USD Potentially under $200USD)

The RGM-79 M Or LTM Digital Rangefinder Camera

An RS232C serial terminal using MC6802 & LED dot matrix display modules

6802 Serial Terminal

mitsuru-yamada Mitsuru Yamada

A 3-core board (MPU + MCU + FPGA) for a DIY desktop pick-and-place machine. WIP.

Xeltri — Pick-and-Place Control Board

shin-lin Shin Lin

A compact smart heat-safety system that senses, analyzes, and alerts—turning real-time environmental data into actionable protection.

Heat Sentinel — Your Personal Heat Index Guardian

the-spanner The Spanner

A Starship - Graphene mass production - Water from Rocks + 200 new designs Co Authors - Gemini AI & Kimi 3 AI AI vetted zero Physics fails

The Gemini Protocols for Deep Space Travel

archer-quinn Archer Quinn

Wanted to build a rolling ball robot that was like the pop from Arc Raiders. This is my journey into making a prototype.

Rolling Ball Robot

A homebrew Z80 single board computer running RomWBW for RCBus systems.

E80C: Homebrew Z80 CP/M Computer

An open-source, all-in-one motion control board for desktop pick-and-place machines. RISC-V, Ethernet, USB-C, 7 stepper drivers on board.

PickOMatic V2 : RISC-V Pick and Place Controller

rmingon rmingon

Repairing and refurbishing an original ZX Spectrum issue 2

Original ZX Spectrum refurbished

compact, energy-efficient, battery-powered system for ePaper-based display of information gathered via Wi-Fi

Tinta - low power wireless epaper device

Crafting an electric plane with modern tools

AirCraft

The atomic force microscope for the masses

A working DIY quartz tuning fork AFM

luis-mestre Luis Mestre

Continuing my development of small portable audio recording setups, this time trying a more unconventional SBC to test what it can do...

Zimaboard 2 Recording Rig

craig-hissett Craig Hissett

Real transformer language models running on stock NES, SNES, Game Boy Color, Genesis and N64 hardware, measured in actual cycles.

Transformers on Retro Game Consoles

scott-boudreaux Scott Boudreaux