RFID From First Principles And Saving A Cat

[Dale Cook] has cats, and as he readily admits, cats are jerks. We’d use stronger language than that, but either way it became a significant impediment to making progress with an RFID-based s…

Learning Synths

Learn about synthesizers via Ableton’s interactive website. Play with a synth in your browser and learn to use the various parts of a synth to make your own sounds.

How Much Bandwidth Does CW Really Occupy?

Amateur radio license exams typically have a question about the bandwidths taken up by various modulation types. The concept behind the question is pretty obvious — as guardians of the spectr…

A Single-Resistor Radio Transmitter, Thanks To The Power Of Noise

One of the great things about the Hackaday community is how quickly you find out what you don’t know. That’s not a bad thing, of course; after all, everyone is here to get smarter, righ…

Impatience Is A Virtue When Testing This Old Maritime Teleprinter

[Larry Wall], inventor of Perl, once famously said that programmers have three key virtues: sloth, hubris, and impatience. It’s safe to say that these personality quirks are also present in s…

Abacus Synthesizer Really Adds Up

The abacus has been around since antiquity, and takes similar forms over the hundreds of cultures that have embraced it. It may be one of the first devices to be considered as having a “user …

Metric Modulation Simplified by a Metalhead

Let Tyler Rossow show you how metric modulation works!

Hackaday Links: October 10, 2021

We have to admit, it was hard not to be insufferably smug this week when Facebook temporarily went dark around the globe. Sick of being stalked by crazy aunts and cousins, I opted out of that littl…