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Author Archives: paulwallich
Vindicated
About two years ago, for no really good reason, I designed a 3D-printable setup for coupling those standard gearmotors to Lego bricks and axles, and posted it at Youmagine. Hardly anyone liked it or downloaded it. Then, last week, Adafruit, … Continue reading
Burning down the house by remote control
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
Cooperative Editing whether you want it or not
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
The finicky details are the easy part
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
Glowforge!
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
Arduino on Windows: not ready for prime time
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
Buy extension cords, not wire
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
