[rrd-users] announce: smart metering with rrdtool

devzero at web.de devzero at web.de
Thu Sep 30 00:21:37 CEST 2010


i was encouraged by a friend to post about my smart meter, so 
maybe somebody finds this useful, too.

i´m using rrdtool for monitoring energy usage, by combining a 
so called "currentcost envi" with an embedded linux routerboard
(mips based board from omnima.co.uk, design is from older 
edimax/sweex router)

You may have a look at :

The solution is built around rrdtool, which is the essential building-block.

What´s special about this solution is that it`s easy, it`s cheap, it`s only 
140 lines of scripting code and it may be a good example or starting 
point for everybody who want`s to do long-term data logging with 

it basically consists of three scripts:
create-rrd.sh for creating the rrd, fetchdata.pl to get data from the 
energy monitor device and stick that into the rrd and  makegraphs.sh 
for creating the graphs.

sorry, that this solution is presented in german language for now, 
maybe i create an english version later on. 

feel free to ask if you have any questions, i can translate the most essential
parts on request.

And thanks for creating rrdtool and making it available for free, especially to 
tobi oetiker


i got some of the concepts/ideas/code-snippets from similar solutions
on the net. Will add references for that later on, too.

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