Author Archives: paulwallich

This is why there are PCB fab services

So the kid decided to teach a soldering workshop at geek camp. Of course that means a custom PCB (and custom firmware, but that’s not my department). Which meant that I finally got to test all those tutorials about etching … Continue reading

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The Pin Dance

Don’t get me wrong, I love Circuit Python. Sure, I could get stuff done in the ugly stepchild language that is Arduino, but the niggling details, the mediocre IDE, none of it was my friend. And truth to tell, it’s … Continue reading

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In praise of cattle

The 16-year-old, who wants a career somewhere in IT, introduced me a while back to the distinction between pets and cattle. When something goes wrong with your pet, you nurse it back to health. When something goes wrong with one … Continue reading

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Pedal Assist: Not What I Thought It Was

It’s been a few years since I started wanting an e-bike, but for a long time I was put off by physics. We live at the top of a steep hill, and I’m fat and out of shape. So all … Continue reading

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Osmotic Bubbles

Who knew? Our fancy toilet has been leaking for a while, and at long last I decided to do something about it. Which involved disassembling a bunch of toilet-body parts (remember, fancy), turning off the water and extracting the flush … Continue reading

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Thank you, Electronics Goldmine

I admit it, I have an addiction to things that call themselves bargains. Down in the basement are multiple cubic feet of random electronic and mechanical components that looked like a good idea or might be useful someday or just … Continue reading

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Ok, this is actually useful

And it only took me 9 years to notice. It’s an openscad script for making keyboard feet. Thank you. Not such a big deal at home, but at a school with donated computers of interesting provenance and a couple dozen … Continue reading

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Possibly the creepiest Christmas ornament of 2020

Zapped on my glowforge, slightly modified from a design by IconPai at the Noun Project. Every year I take the bottom however many inches have to come off our tree to make it fit the living room ceiling and slice … Continue reading

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Something actually useful

Our dishwasher is getting to be a certain age. And the plastic parts are showing it. Especially after one of the youth tripped over a cat and onto the bottom rack. When the wheels fall off they have a really … Continue reading

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