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The sourcecode of the Flukso is available at Bart's github page: http://github.com/icarus75/flukso. Clone it to have your own local copy. The repository contains the three parts: Microcontroller firmware, Router board software (openwrt) and the code for the website.
For the local interface to work you have to update the Lua scripts installed in ”/usr/share/lua/flukso”. I suggest that you make a backup copy. Then you simply scp the updated files from the github repository to the Flukso. If you're using mySmartGrid, you have to adjust the logging location afterwards. Open flukso.lua and edit the xmlrpcaddress entry to look like this:
xmlrpcaddress = 'http://dev2-logger.mysmartgrid.de/xmlrpc'
After restarting the flukso daemon, you should have a ”/tmp/sensor” directory:
root@flukso:/tmp/sensor# ls 21dbb8a1b3b27e51d9b8384d6daf6a20 acff964b2308069847f02222bb3a6fd1
The last 60 seconds of measurements are stored there in JSON format:
root@flukso:/tmp/sensor# cat acff964b2308069847f02222bb3a6fd1 [[1279099535,0],[1279099536,0],[1279099537,0],[1279099538,0],[1279099539,0],[1279099540,0],[1279099541,0],[1279099542,0],[1279099543,0],[1279099544,0],[1279099545,0],[1279099546,0],[1279099547,0],[1279099548,0],[1279099549,0],[1279099550,0],[1279099551,0],[1279099552,0],[1279099553,0],[1279099554,0],[1279099555,0],[1279099556,0],[1279099557,0],[1279099558,0],[1279099559,0],[1279099560,0],[1279099561,0],[1279099562,0],[1279099563,0],[1279099564,0],[1279099565,0],[1279099566,0],[1279099567,0],[1279099568,0],[1279099569,0],[1279099570,0],[1279099571,0],[1279099572,0],[1279099573,0],[1279099574,0],[1279099575,0],[1279099576,0],[1279099577,0],[1279099578,0],[1279099579,0],[1279099580,0],[1279099581,0],[1279099582,0],[1279099583,0],[1279099584,0],[1279099585,0],[1279099586,0],[1279099587,0],[1279099588,0],[1279099589,0],[1279099590,0],[1279099591,0],[1279099592,0],[1279099593,0],[1279099594,0]]
In order to export these values create a symlink for the webserver:
# ln -s /tmp/sensor /www
Then the sensor readings can be queried from another machine like this:
$ curl http://192.168.2.102/sensor/acff964b2308069847f02222bb3a6fd1