Table of Contents
NETLESS3 workshop, Athens
Workshop took place at Frown, Athens - http://www.frowntails.com/technology/netless-workshop/
Photo log - https://www.flickr.com/photos/datenspiel/sets/72157634042359069
Following firmware was run on TP-Link MR3020:
netless3-10-factory.bin.zip netless3-10-upgrade.bin.zip
Data collected on netless node devices. It contains username, message and time at which two nodes interconnected. Since the devices don't keep real time, the represented time is relative to the moment when device was powered on (seconds from boot). In both attempts the devices' time was (more or less) synced by powering-on all 10 devices at the same moment.
To convert relative time we first need to turn the time at which devices were power on into unix time stamp:
date --date="Wed May 22 19:32:02 EEST 2013" +%s (prints "1369240322")
Then add seconds value to this timestamp and convert back to usual time format:
cat alex-log1.csv | sed "s/,\([0-9]\)/;\1/" | awk 'BEGIN { FS = ";"} { print "alex;"$1";"strftime("%F %T", $2+1369240322) }'
This is what we get:
(original data from a node:) netless power,1938 (converted data:) alex;netless power;2013-05-22 20:08:35
collected data
walk #1
alex1.zip
danja1.zip
elena1.zip
elina1.zip
elisavet1.zip
eva1.zip
iliana_maria1.zip
konstantinos1.zip
penelope1.zip
philip1.zip
walk #2
alex2.zip
danja2.zip
elena2.zip
elina2.zip
elisavet2.zip
eva2.zip
iliana_maria2.zip
konstantinos2.zip
philip2.zip
walk #2 visualization
The previous files contains also data from GPS devices. Merging GPS data with the data from netless node devices, a video visualizing our second walk was created: http://www.youtube.com/watch?v=FetseK5QzRM
