Collaborate Disseminate
If you are a ham radio operator of a certain age, you probably remember ads for “The Instructograph,” a mechanical device for learning Morse code. [Our Own Devices] has an …read more Continue reading Machine Teaches Morse Code
Real flowers do it, and even the Beatles did it. [Robo Hub] now has a plastic sunflower that tracks the sun using, of course, an Arduino. It may not qualify …read more Continue reading Robot Sunflower Follows the Sun
When you think of a particle accelerator, you usually think of some giant cyclotron with heavy-duty equipment in a massive mad-science lab. But scientists now believe they can create particle …read more Continue reading Particle Accelerator… on a Chip
Building a crystal clock source for a CPU used to be a bit of an effort but these days, there’s nothing to it. Even if your CPU or other device …read more Continue reading All Inverters are (Not) Created Equal
The FCC is circulating a proposal for new rules pertaining to amateur radio in the United States. In particular, they want to remove certain baud rate restrictions that have been …read more Continue reading Ham Radio May Speed Up Soon
Making conference badges, official or unofficial, has become an art form. It can get pretty serious. #badgelife. But DEFCON-goers aren’t the only people making fancy personalized nametags. Hams often had …read more Continue reading Simple Badge is Simple, But Its Yours
When it comes to programming in C and, sometimes, C++, the printf function is a jack-of-all-trades. It does a nice job of quickly writing output, but it can also do …read more Continue reading Linux Fu: Customizing Printf
Laser printers today are cheap and readily available. But in 1976, they were the height of printing technology. The IBM 3800 was the $175,000 printer to have in that year. …read more Continue reading Retrotechtacular: The $175,000 Laser Printer
If aliens visited the Earth, they might find our obsession with music hard to fathom. We have music in our homes, our cars, and our elevators. Musical performances draw huge …read more Continue reading Is That a Record Player in Your Pocket or…
The [Math Sorcerer] loves books. His latest acquisition is the famous Real and Complex Analysis, which is a very stout math book. How stout? Well, there are several chapters on …read more Continue reading Math Book Gets Real with Complex