I have updated the page showing my household temperature graphs. Previously I was logging data to the cloud using Pachube and while this works well, the tools available for graphing the information are not great. As the number of readings increased, the tools I was using to render the graphs became slower and slower. What’s more the graphs used flash which wasn’t particularly helpful if I wanted to view the graphs on my iPad. I have now reverted to some home brew data logging using RRDTool. Data is stored in a Round Robin Database and then rendered using some more …
Category Archives: Heating
Update on hammering TRV – 2
Posted by Chris
on February 6, 2012
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I spent some time yesterday clearing my garage a bit. While doing so, I found the original head to the new TRV I’ve had fitted to my bedroom radiator. Previous visitors will be aware from here and here that the TRV was sounding like a jack hammer. My plumber thinks this is due to the radio controlled actuators I have fitted. The following video proves this isn’t the case as it does exactly the same with the original head on it. Sorry I filmed it with my iPhone in portrait mode! It looks to me like it is definitely a …
Cloud Logging
Posted by Chris
on December 7, 2011
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I have been playing with logging this week. FHEM now automatically records the measured temperature, the desired temperature (set point) and actuator levels for each room to Pachube.com (pronounced Patch Bay). With the data held on Pachube, I can do various things like build dynamic graphs for display on this site. At the moment, I am using a Pachube app which displays the graphs using flash, but being an iOS user, this is less than optimal. You can view the current temperatures in my three bed terrace by clicking the following link: Household Temperature Graphs Bookmark on Delicious Digg this post …
Update on hammering TRV
Posted by Chris
on November 23, 2011
1 comment
I’ve been having problems with a new TRV fitted in my bedroom. I’ve checked the TRV at home and while I can’t tell whether it matters (I think the only markings are in the back) I do think the plumber has put it on the return side of the radiator. Just after kicking in this evening, I felt both pipes and the one with the TRV on it is noticeably cooler to the touch than the other (with the lock valve on it). Hmm… I am also trying out WordPress for iOS (this post being sent from my phone) so …