To capture an instant on film or sensor with a camera, you usually need a fast shutter. But alternately a...
Arduino
It may be the last gasp of summer here in the Northern Hemisphere, but it’s always cold somewhere, whether it’s...
Do you know Morse code already? Or are you maybe trying to learn so you can be an old school...
Morse code, often referred to as continuous wave (CW) in radio circles, has been gradually falling out of use for...
Numbers stations are a weird phenomenon where odd voices read out long strings of numbers or random codewords to the...
Video may have killed the radio star, but cell phones and smart phones all but killed the pager. They still...
We know what you’re thinking: with so many wireless modules available for just pennies, trying to create a physical data link...
For those who grew up with a cell phone in their hand, it might be difficult to imagine a time...
had previously built a frequency counter using an Arduino, with a useful range up to 6 MHz. Now, they’ve implemented...
has a type, as they say. At least as far as radios are concerned, he seems to prefer elegant designs...
In an age of increasing “stuff” orbiting Earth one big concern is what happens if one satellite hits another. The...
National Coding Week has been run for many years in the third week of September. Coding is used increasingly in...
Magnetic loop antennas are great if you are limited on space since they are just a potentially small loop of...
Computers and digital sensors have allowed for the collection and aggregation of data barely possible to imagine to anyone in...
433 MHz radio signals are all around us. They’re used for things like smart power plugs, garage door openers, and...
Every project these days that involves detecting speech seems built around complicated algorithms: machine learning, pattern matching, and spectrum analysis...
When the first radios and telegraph lines were put into service, essentially the only way to communicate was to use...
If you have an RTL-SDR compatible radio there’s an excellent chance you’ve heard of the rtl_433 project, which lets you...
All you need to get started in Software construction is a personal computer (Windows, Linux, Mac – they’ll all do),...
Old radios didn’t have much in the way of smarts. But as digital synthesis became more common, radios often had...
When sat down to design a sideband transceiver for the 20 Meter (14 MHz) ham radio band, he eschewed the...
My first exposure to radio communication happened when I was around 5 or 6 years old. My dad was working...
Amateur Radio Digital Communications (ARDC) is helping high school computer science students become makers by providing a grant to purchase...
With the push to having most of a radio receiver as part of a PC, it might seem odd to...
Lightning is a powerful and seemingly mysterious force of nature, capable of releasing huge amounts of energy over relatively short...
