Author: Johannes Ernst

  • Day 2 of working on a treadmill and on the computer

    Last year, I remodelled my home office, and setup two (self-built) standing desks (post). Last week – you guessed it – I added an under-the-desk treadmill. And today was the second day I spent most of the working day on it. Here are my observations: All walking speeds below about 2-2.5 mi/hour are fine. It…

  • In praise of masterclass

    Take a master of their art, and let them be coached, for an hour, by a grandmaster. In public, with everybody there to listen, learn and be amazed. That is a masterclass in a nutshell. Wikipedia claims that masterclasses exist in “painting, drama, any of the arts, or on any other occasion where skills are…

  • How to change your Ethernet’s Mac address on boot (Linux)

    Let’s say you bought three cute little USB-to-Ethernet adapters for your Raspberry Pi Zeros running UBOS. Plug one in, works like a charm. … as long as you don’t attempt to use two with two Pi Zeros at the same time, on the same Ethernet network. Or all three. Because if you do that, as…

  • The 2nd Raspberry Pi in the House Now Controls a Closet Fan

    When I remodeled my home office last year, I put a (bathroom) fan into the ceiling of the server closet. This would allow the heat from the servers leave the house via the attic, without heating my office up too much in the summer. It gets quite a bit a sun and heat even without…

  • I’m done with War On Anything

    The older I get, the more I realize that I have no interest whatsoever to make war on anybody or anything. I don’t care for: War on other countries, people or religions War on drugs, poverty, and so many other things War on competitors, etc. etc Renaming the “War Room” at Uber to “Peace Room”…