Eightlines Creations

Experiments in Physical Computing

Air Quality Monitoring

Recently I had a discussion with someone from the South Riverdale Community Health Centre on Air Quality monitoring in Ontario (AQI). I learned a number of things, there are only 40 Air Quality Monitors in Ontario and they test for six key indexes. Toronto runs a slightly different test, the ...

Machining a Maple Case for the GPS

GPS Case Originally uploaded by Eightlines Playing with code is fun, but when you do it all day for work it's nice to come home and build something tangible. I picked up some scrap Hard Maple from the baseball bat manufacturer that happens to make Barry Bonds' bat of choice (purportedly). Now ...

Mapping GPS Data

When I last left the data logger project off I was having quite a few issues with managing the size of the data in the allotted EEPROM space on board the Arduino. I built up an SDCard writer based on several specs I found in the messageboard and it worked ...

Data Logger — Next Steps

The Arduino EEPROM is a useful thing to have available for those times when you need to store small samples of data. In my initial data logger prototype I managed to record the Hall Sensor data into two bytes worth of space per minute interval. This gave me around 4.25 ...

Data Logging to the Arduino EEPROM

I made the first successful run with the data logger yesterday. I've wired up a hall sensor to the wheel of my bike and recorded 60s intervals of my ride into work and back. Ideally I'm looking for increased resolution over a typical bicycle computer; where a ...

Data Logger

Been working on a data logging application lately with the intentions of recording my biking sessions and displaying them on a mapping API. The general idea is to use the Hall sensor common in many RPM applications to record revolutions to the EEPROM onboard the Arduino. I'm having a few issues ...

January 6th 2013
Tags: Ideas 0 Comments

RoboBrrd and Voice Commands

Update - Jan 18, 2013 - Updated code to exclude newlines from the actions and embedded code as a Gist. Want your RoboBrrd (or any other Arduino app) to obey your every command? Here's a quick script using Florian Schultz' Speech to Text Library (STT). This script will change the color ...
November 2nd 2012
Tags: Ideas 0 Comments

Arduino Leonardo and Windows 8

Ran into a problem installing the Arduino Leonardo on Windows 8 yesterday and I thought it would be useful to other people (including me, when my memory fails) to document the solution. Although the Leonardo does not require FTDI drivers, it still requires the COM port drivers to be installed. Windows ...
December 29th 2011
Tags: Code, Processing 0 Comments

DLP-RFID1 for Processing

I recently had to set up a Processing application to monitor 15 RFID readers. The source was in C++ so I made a quick port to Processing. I'm adding it here in case it's of use to anyone using a DLP-RFID1 device. Is there a better way of doing it? ...
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 ...

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