Author Archives: paulwallich

Burning down the house by remote control

Posted on March 9, 2018

A few weeks ago I blew up my Octoprint installation by adding and deleting too many extensions at the same time. Before reinstalling, I thought it might be a good time to upgrade a bit.  So now there’s a cute … Continue reading →

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Cooperative Editing whether you want it or not

Posted on January 7, 2018

The last time I tried teaching some kids how to program arduinos, the room we were in had no wifi to speak of. Getting working copies of the desktop IDE onto half a dozen ancient underpowered windows laptops was a … Continue reading →

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The finicky details are the easy part

Posted on August 7, 2017

For someone coming from a woodworking background, 3D engraving by laser is as far opposite from carving as it’s possible to get. Not just the medium — multiple machine passes from a specially-prepared bitmap — but also the understanding of … Continue reading →

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Glowforge!

Posted on July 12, 2017

My laser cutter arrived a few weeks ago. It’s pretty cool. Partly because I’ve been anticipating it for the better (worse?) part of two years, but mostly because it’s just there. I’ve used a laser cutter before, and this was … Continue reading →

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Arduino on Windows: not ready for prime time

Posted on July 10, 2017

I’ve been teaching a little middle-school mobile robot workshop at the 12-year-old’s school, and it’s been a mess. The kids did pretty well assembling the bots and wiring them up, but clearly I needed to spend much more than the … Continue reading →

Posted in going places, probably boring, things that don't work | Tagged | 3 Comments

Buy extension cords, not wire

Posted on March 1, 2017

When you’re in the sticks, your supply options are limited. That’s why the other day I bought a couple of extension cords instead of the bulk wire that was right on the other side of the aisle at the hardware … Continue reading →

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Solder first, Trim Headers Later

Posted on January 26, 2017

I had a bunch of Adafruit Metro Minis to solder up for a workshop I’m teaching, and –as usual — almost all the header strips were longer than they needed to be. I guess it’s much quicker to pack a … Continue reading →

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