A collection of hobby projects, playing with mostly obsolete technology: Classic arcade games in smaller packages, vintage computing (think 1950s and 60s), and an incomplete-but-not-abandoned attempt to build a scanning tunneling microscope with atomic resolution.
New – A first glance at the Enigma touch, an electronic model of the Enigma cipher machine. Photos, quick reference card, and detailed user instructions.
New – The RPC-4000 drum computer replica should now be fully working, and I have added the complete project files and documentation to the page. Still looking for software!
New – Updated usage instructions for the 65F02 CPU accelerator, as well as an updated version of the TinyProg FPGA programming software. See the 65F02 files & links page. Also, the 65F02 accelerator supports most of the Conchess chess computers with Ulf Rathsman’s programs! See the 65F02 main page for more.
I like old arcade games from the 70s and 80s (although I’m not good at playing them). Some of these early games generate their video display in unusual ways – by drawing vectors via X/Y control of the CRT’s electron beam, or by generating their video signal from hard-wired TTL logic.
Two projects in this section feature original circuit boards in new, smaller enclosures which showcase the boards. Also, a small MAME cabinet specializing in vertical-format arcade games from the “Golden Age”, based on a Raspberry Pi and a customized mechanical joystick.
Asteroids mini
… where vintage is defined as anything from “older than me” to “my first computer”. Pocket-sized replicas of 1950’s magnetic drum computers, a mouse from 1968, and the 6502 microprocessor from 1975 re-implemented to run at 100 MHz.
Enigma touch
A catch-all for projects that don’t fit the categories above. At the moment, this comprises my – fairly comprehensive but unfinished – Scanning Tunneling Microscope project, a wristwatch for nerds, and modification instructions for an echo effect pedal for musicians.
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