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Mark Frauenfelder

Latest from Mark Frauenfelder

monkey-couch-guardian

My cats like to jump on furniture and shed their fur, which ends up on my clothes. To stop them, I’m using a Monkey Couch Guardian. I made it from one of those old-fashioned cymbal-banging toy monkeys, modified with an inexpensive Arduino microcontroller and a proximity sensor. Now when a... Read more »

A couple of years ago I whittled a wooden spoon as a thank-you gift for our family friend Valerie, who was my daughter’s elementary school art teacher. Valerie appreciated it so much that my wife asked me to make another wooden gift for Valerie’s upcoming birthday. I thought about it... Read more »

It’s possible to draw a fairly straight line with a pencil, but if you want to be accurate, you must use a ruler or straightedge to guide the pencil as you draw. Similarly, if you want to saw a piece of wood (or plastic, or PVC pipe) so that the... Read more »

Relaxing in a coffee house with a professionally made cup of espresso or cappuccino is one of life’s simple pleasures, but I also enjoy making my own coffee drinks at home. I buy whole beans online and grind them in a coffee grinder. I’m a pretty good home barista, if... Read more »

Last year my 13-year-old daughter asked for a skateboard, so I gave her my 20-year-old board (which wasn’t seeing much use). She liked to ride it along the bank of the Los Angeles River, and I would ride with her on a Razor scooter. But after a while, I started... Read more »

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