Paul King chronic tinkererer

OpenHAB and Wireless Temperature Sensors

The cheap wireless modules I bought are finally working nicely so I've hooked up a temperature sensor to OpenHAB using an Arduino coupled with a cheap ethernet module.

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Make sure that the four screws...

Have a few beers, impulse buy a new toy. To keep you on your toes it ships with a puzzle...

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3D Printing a Rollerblind Cog

Lately I've been trying to automate the rollerblind in my office. I'd like it to close itself when it gets dark, and reopen in the morning...

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Mimicking RF Remote Signals with Arduino

Recently I read an interesting article about black-box analysis of unknown radio signals that inspired me to revisit my home light controller.

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Opening Spotify links in Spotify

Not a fan of Spotify's webplayer? Here's a quick hack to open Spotify links using the desktop app. (Assumes Chrome browser)

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Solving a fun Hackaday puzzle

Tonight I visited Hackaday to find they had a new landing page. Here's a quick walk-through of how I solved it.

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Installing Socket.io, NPM, and Centos 5.x

Centos 5 ships with a pretty old version of tar, that's incapable of unpacking one of the socket.io dependencies: websocket-client-1.0.0.

If you try to npm install socket.io, you'll hit a bunch of errors like:

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Scaling HTML5 Canvas For Cheap

Last night while trying boost the framerate of my canvas based Raycaster, I remembered a post I'd read on using CSS 3D transforms to optimize 2d canvas drawing on the iPhone 4.

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