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xef 2024/06/10

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Arduino-Based Curtain Automation, Mk 2

In 2012, I built a controller so that I can open and close my curtain from the command line! It worked ok for a while, but eventually I rebuilt it from scratch. The description of the first build is here, or read on for the description of Curtain Mk 2. So. My apartment has a 16' wide floor-to-ceiling window, and a correspondingly-huge curtain. I wanted to put the curtain under software control so

xef 2013/09/10

Arduino

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message threading

message threading. © 1997-2002 Jamie Zawinski <jwz@jwz.org> In this document, I describe what is, in my humble but correct opinion, the best known algorithm for threading messages (that is, grouping messages together in parent/child relationships based on which messages are replies to which others.) This is the threading algorithm that was used in Netscape Mail and News 2.0 and 3.0, and in Grendel

xef 2013/09/09

Algorithm

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engineering pornography

This is one of my favorite geek stories of all time. I know I've mentioned it to a few of you recently, and you hadn't seen it, so here it is for posterity. Date: Wed, 27 Sep 89 10:27 PDT From: "Thomas L. Mc Mahon" <tlm@riverside.scrc.symbolics.com> Subject: Cuts and jumpers (on a different scale) To: Hardware@riverside.scrc.symbolics.com [Not quite the right mailing list but close. If you don't c

xef 2012/12/21

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SmoothLifeL

supports many interesting phenomena such as gliders that can travel in any direction, rotating pairs of gliders, wickstretchers and the appearance of elastic tension in the 'cords' that join the bl obs. Slides showing how the rule works. Paper describing SmoothLife and SmoothLifeL. Previously.