Posts Tagged ‘datalogging’

…of course i was logging

Wednesday, February 10th, 2010

Screen shot 2010-01-30 at 20.12.55I fractured my ankle in a hard snowboard crash a couple of weeks ago and of course I was data logging the accelerometer forces. I was using the iPhone app developed last fall for the seismi{c}ycling project; while riding the phone was in my jacket’s internal chest pocket.

A group from ITP was enjoying the bitter weather at Mount Snow, in West Dover, VT on our (now annual?) Snowbunnies trip. This crash was late in the day on a wide open trail. I accidentally disengaged my heelside edge for a moment, causing me to rotate slightly clockwise and slide laterally. Moments later, my heelside edge caught again, now on the downhill side, causing me to quickly flip backwards onto my head … thankfully I was wearing a helmet. After that I can’t recall what exactly happened, but I know that it involved a lot of tumbling which my right ankle just couldn’t weather. (more…)

rattle…

Saturday, September 26th, 2009

handlebar_vibrationThis is just a teaser for a project I’ve recently begun, but I had an “a-ha” moment when the visualization program finally came together just now and wanted to share…

This is geocoded accelerometer data from the handlebars of my bicycle on my commute from Greenpoint to ITP in the East Village. The sample at middle of the graph, and the red circle on the path coincide. I realized just now that this is a seam in the Williamsburg Bridge. Neat.

I’ll post proper documentation of the project as it becomes more robust…but I’m excited. Waiting for the heart rate monitor interface to arrive…looking to couple internal status with external events…

data logging…mobile

Tuesday, November 11th, 2008

(this is an initial report for a longer post)

in conducting field research for the CycleSense bicycle proximity sensor i’m looking to gather data about actual proximity events while riding and to correlate these events with video documentation and personal annotation from the test subject…probably just me.

to that end, i’ve worked on rigging up a data logging solution for the sensor package. there was some information on using bluetooth enabled mobile phones as a storage device, communicating to a bluetooth module such the blueSMiRF attached to a microcontroller. in this case, an ultrasonic rangefinder is read by an Arduino which sends the range values through the blueSMiRF to a nokia phone. (more…)