Category Archives: Electronics

Dangerous failures

Posted on December 21, 2019 by davidcrocker

Sometimes, equipment that is supposed to be designed with safety in mind turns out to be unsafe. Here’s an example I came across a few years ago: a mains-powered smoke alarm installed in a top-floor flat:

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Five things I never use in Arduino projects

Posted on October 16, 2011 by davidcrocker

I’ve been using Arduino for a few months now, and designing electronics and embedded systems for a lot longer. In reading the Arduino forum, I’ve seen a few areas that Arduino users often find difficulty with. It seems to me … Continue reading →

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Prototyping small embedded projects with Arduino

Posted on August 9, 2011 by davidcrocker

Recently I needed to design and build a small battery-operated device with 4 outputs sequenced at a variable rate. After playing with a 555 timer IC and some CMOS flip-flops, I realised that the modern way would be to use … Continue reading →

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