Category Archives: Technology

Measuring Mains Frequency

Posted on 2022-06-04 by Nigel VH

Mains frequency in North America is specified at a frequency of 60Hz, however in reality that number varies up and down a small amount as load and generation balance on the power grid. As generation exceeds load, physically the turbines … Continue reading →

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New Oscilloscope

Posted on 2022-02-25 by Nigel VH

For a number of years I’ve had some older analog oscilloscopes without storage capabilities, paired with a Saleae Logic, which has done well for my use cases in general, but there are some limitations. If a signal was faster than … Continue reading →

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Storage Expansion

Posted on 2022-02-08 by Nigel VH

For the last several years I’ve had a storage shelf attached to my home server supporting roughly 30TB of redundant storage making use of ZFS, which I’ve been quite pleased with. I use it to store all my various media, … Continue reading →

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Home Energy Monitor

Posted on 2022-01-28 by Nigel VH

Some friends and I recently spoke about understanding our home energy usage better, and implementing data collection for various circuits in which we had little real visibility into the actual usage and how they contributed to our energy bills. We … Continue reading →

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GPS Antenna Distribution Amplifier

Posted on 2022-01-18 by Nigel VH

In doing some recent repair and testing work on a few GPSDOs (GPS Disciplined Oscillators), I was looking to have multiple devices running at the same time without switching antennas. There are of course generic splitters, which can be a … Continue reading →

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