A 6502 All in the Data
Emulating a 6502 shouldn’t be that hard on a modern computer. Maybe that’s why [lasect] decided to make it a bit harder. The PG_6502 emulator uses PostgreSQL. All the CPU …read more Continue reading A 6502 All in the Data
Author Archives: Al Williams
Your Own Tool Changer
All the cool new 3D printers have tool-changing heads. Instead of multiplexing filament through one hot end, you simply park one hot end and pick up another. Or pick up …read more Continue reading Your Own Tool Changer
Skylab Under the Ocean
A crew lives on a station in a hostile environment. Leaving that environment requires oxygen tanks and specialized gear to deal with pressure differentials. A space station? Nah. A base …read more Continue reading Skylab Under the Ocean
Passive Radar Explained
It is an old trope in submarine movies. A sonar operator strains to hear things in the ocean but dares not “ping” for fear of giving away the boat’s location. …read more Continue reading Passive Radar Explained
Kiki is the Unknown Array Language
Kiki bills itself as the “array programming system of unknown origin.” We thought it reminded us of APL which, all by itself, isn’t a bad thing. The announcement post is …read more Continue reading Kiki is the Unknown Array Language
Authenticate SSH with Your TPM
You probably don’t think about it much, but your PC probably has a TPM or Trusted Platform Module. Windows 11 requires one, and most often, it stores keys to validate …read more Continue reading Authenticate SSH with Your TPM
Using Metal Screws in Plastic Parts
Machine screws aren’t made for wood or sheet metal, they make specific screws for those applications. You probably also know there are special screws for plastic. But did you know …read more Continue reading Using Metal Screws in Plastic Parts
Bacteria Marching to the Beat of a Tiny Drum
Traditionally, identifying a bacterium requires peering through a microscope. Researchers from TU Delft want to trade your eyes for your ears when identifying bacteria. This is possible because they’ve crafted …read more Continue reading Bacteria Marching to the Beat of a Tiny Drum
USB, Abstracted
Modern technology builds on abstractions. Most application programmers today don’t know what a non-maskable interrupt is, nor should they have to. Even fewer understand register coloring or reservation stations for …read more Continue reading USB, Abstracted
[Kerry Wong] Finds SMD Test Clips
One of the many problems you run into when you work with SMD parts is trying to probe the little tiny pins. While we usually watch [Kerry Wong’s] videos for …read more Continue reading [Kerry Wong] Finds SMD Test Clips