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Reading an ISKRA AM550 P1 Port with a Pi

Jan 17, 2020 · 3 min read · environment ·
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Although I am the guy with a soldering iron and a bit of software development experience, I am not a fan of the "internet of things", "smart meters" or smart anything really. Not because I don't like technology, but because of the potential security and privacy problems it brings with it. That said, …
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1N4148 diode as RF switch

Feb 24, 2018 · 4 min read · hamradio Hardware technology ·
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For a recent experiment I was using BA389 PIN diodes to switch low power RF signals. I was asked why I didn't use an ordinary 1N4148 for that. Since I didn't know what an 1N4148 would do when used like that, and I also didn't really know what a BA389 actually does, I decided to do some measurements.Aren't diodes …
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