Alex van den Bogaerdt schrieb: > ----- Original Message ----- > From: "Matthias Lemke" <[email protected]> > To: <[email protected]> > Sent: Saturday, December 10, 2011 9:54 AM > Subject: [rrd-users] counting pellets with rrd > > >> Hello, >> >> I connected my eta pellets heating unit via webservices to my home >> server. I am interesting in counting the amount of pellets per day (warm >> weather days should have low counts of pellets). The unit has a counter >> that counts from zero up forever... The unit sends the value in "kg". >> normally I have around 15...20 kg / day. >> I want to have a graph that shows me the kg/day. So I thought that I can >> write one data per day to the rrd. But, after two nights of testing and >> testing, I have no idea for the correct rrd setup... > > In addition to what's already mentioned, don't forget that you need to modify > the heartbeat setting from its default. >
done. > You say that you want to know the amount of pellets. RRDtool has no idea how > many pellets weigh a kilogram, but if you know then you can tell RRDtool and > show pellets per day. Just multiply (using a CDEF) by 86400 for 'per day' and > by the amount of pellets per kg. This can be done in the same CDEF, even in > the same multiplication. Oh, that is a missinterpretation. I am interested in kg/day. Not really counting the pellets :) thanks > > HTH > Alex > > _______________________________________________ > rrd-users mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
