Eightlines Creations

Experiments in Physical Computing

Passing the kid test

I've had the Solenoid project working for about a week and a half now, but the rain and lack of sunlight was getting in the way of making a video of everything in action. It worked out well because it gave me the chance to demonstrate the project to a ...

XBee Solenoid Controller

This Solenoid controller has been filled with a ton of small successes. Today I'm chalking up one more success to the list. I've got the XBee portion of the controller working. I had been working on this for a long time now, and the more I work on it the ...

A Simple redesign

If you can’t explain it simply, you don’t understand it. -- Albert Einstein The big issue I was having with the Solenoids was too much pressure. So while on a trip to Sudbury my Stepfather and I redesigned it. Well, I just told him what I was thinking of doing, and he ...

Listo Destructo

So the guys at the electronics stores are loving me lately. I'm pretty good at destroying things. While electronics is a reasonably affordable hobby, I've managed to turn it into something a little more extreme. So without further adieu, here's my "listo destructo": ATMega168 IC -- I was using a headless ...

Iterative Steps

If anyone had have told me this project would cost slightly in the range of $300 I would have probably not have started it at all. Individually the components don't cost that much, Arduino -- $60, transistors -- $10 for nine of them, copper connectors -- $2, and so on. ...

Controlling the Rain by Arduino

This past January I was biking home in the rain when this thought hit me. I was stopped at a red light looking at the pools of water on the ground wondering if it would be possible to calculate the density of rainfall. I thought, even when they're giving weather ...

June 9th 2010
Tags: Code, ObjectiveC, Three20, Tutorial 0 Comments

Three20 TTTableViewController commitEditingStyle

This post is mostly for my future reference. I found the documentation of the TTTableViewController's commitEditingStyle to be lacking. Some of the comments on StackOverflow provide the right answer, but the code wasn't posted so I struggled for a bit. Below is an example of the version I managed to ...
September 11th 2009
Tags: Found 0 Comments

TGIMBOEJ

The Great Internet Migratory Box of Electronics Junk (TGIMBOEJ) is a box. It's a box that arrives on your doorstep after you drop your name on a wiki page and wait a good deal of time. It's a box that has electronics junk inside and it works off the premise ...
August 9th 2009
Tags: Ideas 0 Comments

Power Monitor Packet

As Hugo helpfully commented in a previous post, here is the link to the Power Monitor Patent. The specific page I'm linking to is the Packet model. Lots of reading to do here, but its pretty interesting. One of the things I find most interesting about this patent is the citations ...
July 26th 2009
Tags: Ideas 0 Comments

Building a Scooter Bike for Kids

Ages ago I bookmarked a design posted on Make for a Scooter Bike, as I intended on building one when my daughter got old enough. On a recent trip to the surplus store I picked up a wheelset for $3 and figured what better time to start than now. I ...
June 10th 2009
Tags: Ideas 0 Comments

Arduino Packet Analyzer

Following the previous success where we managed to see the transmissions from the Black & Decker Power Monitor, Andrew Kilpatrick and I went about trying to capture the packets. Without an access to an oscilloscope with packet capture capabilities we built our own with an Arduino. Essentially, the code waits for ...

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