It’s only feature still is telling the time, but it does at least have Wi-Fi now...| Unimplemented Trap
Exploring original Macintosh icon resources and turning them into a small desktop display.| Unimplemented Trap
Wire wrapping the OG Apple with modern parts and some new additions| Unimplemented Trap
A machine that gives the impression that there is more going on inside than is actually the case: using CMOS shift registers to produce psuedo-random numbers with Nixie tube readout.| Unimplemented Trap
My PiDP-8 and 11 replicas are now properly mounted up in this small cabinet made from stuff I had laying around.| Unimplemented Trap
A tiny games console built around a Noritake Itron Gu20x8 vacuum fluorescent display and powered by an Arduino nano.| Unimplemented Trap
An Arduino Nano based 16-bit integer calculator designed for helping with 6502 programming projects. It can convert between binary, decimal, octal and hexadecimal and perform arithmetic and other logical operations in an RPN style.| Unimplemented Trap
A sort of 8-bit calculator that takes hexadecimal input and displays the results in both hexadecimal and binary. All done with 74 series logic and no microcontroller or CPU and makes for a handy companion for the 8 bit programmer…| Unimplemented Trap
I came across this weird chip a few months ago. Designed by Motorola in the 70s, its purpose is to replace the “ladder logic” relays in industrial process control so all it needs to do is make simple decisions based on whether different inputs are logic high or low. Curious to learn more, I built a small single-board CPU around it…| Unimplemented Trap
A quick weekend project to see what I could make work with the parts I had laying around. This one’s been in the back of my mind for a while so it was time to give it a shot. Using some basic logic chips, 555 timer, and an old static RAM chip, I put together this circuit which can display any pattern you can fit on an 8x8 LED matrix…| Unimplemented Trap
I’ve been using the Clarke brand vice-mounted sheet metal brake for a few years now and it’s been useful for various projects and handled both sheet aluminium and steel without issue. But more frequently I found myself wishing I had a real box and pan (sometimes called finger) brake for when I needed 2 folds on the same corner…| Unimplemented Trap
Developing small 8 bit programs for the 6502, I often wanted to be able to view the source of the assembled output in hexadecimal. Tools like Hex Fiend give you a nice GUI but I wanted something I could run via the terminal.| unimplementedtrap.com
Building my own paper tape punch| unimplementedtrap.com
Punched paper tape was once the default way of storing and transferring information, even before computing. But in 2025 your options for creating new tapes are limited to digging through eBay for a real punch, one which is large, heavy, surprisingly expensive and in need of mechanical care. Or lasers.| unimplementedtrap.com