CP/M Gently
If you are interested in retrocomputers, you might be like us and old enough to remember the old systems and still have some of the books. But what if you …read more Continue reading CP/M Gently
Author Archives: Al Williams
The (RF) Sniff Test
Sometimes the old tricks are the best. [Kevin] learned an old trick about using a ‘scope to sniff RF noise and pays it forward by sharing it in a recent …read more Continue reading The (RF) Sniff Test
Hackaday Podcast Episode 335: Beer, Toast, and Pi
What happens when you listen in on Elliot Williams and Al Williams? You get a round up of the best of last week’s Hackaday posts, of course. The topics this …read more Continue reading Hackaday Podcast Episode 335: Beer, Toast, and Pi
The (Data) Plot Thickens
You’ve generated a ton of data. How do you analyze it and present it? Sure, you can use a spreadsheet. Or break out some programming tools. Or try LabPlot. Sure, …read more Continue reading The (Data) Plot Thickens
Homebrew Tire Pressure Monitoring System
When [upir] saw that you could buy tire valve stem caps that read pressure electronically, he decided to roll his own Tire Pressure Monitoring System (TPMS) like the one found …read more Continue reading Homebrew Tire Pressure Monitoring System
The Android Bluetooth Connection
Suppose someone came to talk to you and said, “I need your help. I have a Raspberry Pi-based robot and I want to develop a custom Android app to control …read more Continue reading The Android Bluetooth Connection
Picture by Paper Tape
The April 1926 issue of “Science and Invention” had a fascinating graphic. It explained, for the curious, how a photo of a rescue at sea could be in the New …read more Continue reading Picture by Paper Tape
The Shady School
We can understand why shaderacademy.com chose that name over “the shady school,” but whatever they call it, if you are looking to brush up on graphics programming with GPUs, it …read more Continue reading The Shady School
Debugging the Instant Macropad
Last time, I showed you how to throw together a few modules and make a working macropad that could act like a keyboard or a mouse. My prototype was very …read more Continue reading Debugging the Instant Macropad
Dead Bug Timer Relay Needs No PCB
We often marvel at the many things a 555 can do. But [Zafer Yildiz] shows us that it can even take the place of a PCB. You’ll see what we …read more Continue reading Dead Bug Timer Relay Needs No PCB