Projects

Hands-on engineering projects, mostly electronics and hardware, with full documentation: design, construction, and the occasional detour into necrocomputing.

Fluke 8050A TFT Display

Replacing a 4½-digit LCD multimeter display with a 320×240 color TFT driven by an STM32 tapping the display bus. Ten-page design write-up.

electronics · hardware · 2016–2020 · complete

newRPL Keypad Overlays

Printed keypad overlays for HP calculators running newRPL — designed in OpenSCAD/SVG, iterated through seven physical versions.

calculators · 3D printing · 2021 · complete

genmon Thermocouple Board

A Raspberry Pi HAT adding exhaust-thermocouple sensing and serial to the genmon generator monitor — plus the "Sloppy Reflow" talk.

electronics · Raspberry Pi · 2020 · complete

PiDP-11/73 Replica

A working scale-model PDP-11/73: Raspberry Pi, a PDP-11 emulator, and glorious blinkenlights.

necrocomputing · PDP-11 · 2020

Ender-3 Pro Configuration

OctoPrint and Cura configuration notes for an Ender-3 Pro upgraded with a BigTreeTech SKR V1.4 — start/end G-code and the reasoning behind it.

3D printing · 2021 · ongoing

SAL-33 Telescope Mount

Landing page (and QR-code target) for the SAL-33 GoTo telescope mount.

astronomy · ongoing

From the archives

Older material carried over from previous versions of this site:

IP/TCP for the PDP-11 — necrocomputing: source and notes for a PDP-11 TCP/IP implementation.
April Fool's Prank of 1995 — a traceroute-spoofing prank from the early UUNET days (blog post).