Linux Fu: Preprocessing Beyond Code
If you glanced at the title and thought, “I don’t care — I don’t write C code,” then hang on a minute. While it is true that C has a …read more Continue reading Linux Fu: Preprocessing Beyond Code
Author Archives: Al Williams
Modern Control of a Logic Analyzer
When you think of a logic analyzer today, you might think of a little USB probe that can measure a few signals and decoding for various serial buses. But actual …read more Continue reading Modern Control of a Logic Analyzer
Beyond The Basics: Exploring More Exotic Scope Trigger Modes
Last time, we looked at some powerful trigger modes found on many modern scopes, including the Rigol DHO900 series we used as an example. Those triggers were mostly digital or, …read more Continue reading Beyond The Basics: Exploring More Exotic Scope Trigger Modes
Temperature Measurement by Wire
There’s an old joke about how to tell how tall a building is using a barometer. The funniest answer is to find the building owner and offer them a nice …read more Continue reading Temperature Measurement by Wire
A RISC-V Security Key
The TKey is a RISC-V-based security key that plugs into a USB port. The device has a number of features, including a device-specific serial number, RAM scrambling, and a monitor …read more Continue reading A RISC-V Security Key
Restoring the DC Bias
If you have a signal that passes through a capacitor or transformer, you will lose the DC portion of the signal. What do you do? If you need it, you …read more Continue reading Restoring the DC Bias
Open Source Scanner Scans the Slides
What do you get when you join a slide projector and a digital camera? Filmolimo, an open source slide scanner. The scanner uses an M5Stack Fire, an ESP32 development board. …read more Continue reading Open Source Scanner Scans the Slides
The Tech That Died in 2023
We don’t indulge too often in looking back, but [Chole Albanesisu] at PC Magazine did and wrote the tech obituary for all the tech gadgets and services that died over …read more Continue reading The Tech That Died in 2023
3D Printing with Plastic Cutlery
How many plastic spoons, knives, and forks do you think we throw away daily? [Stefan] noted that the compostable type is made from PLA, so why shouldn’t you be able …read more Continue reading 3D Printing with Plastic Cutlery
3D Printing Stacks
There is a big difference between building one of something and building, say, 100 of the same item. It isn’t surprising, then, that 3D printing in bulk differs from printing …read more Continue reading 3D Printing Stacks