General Information
Temp. Outside9,2 °C
Temp. Inside22,7 °C

Usages for today
Gas0,00 m3
Power0,2 kWh
Water0 L

HA Statistics
Devices 292
Device values 1723

Hot Projects

Read about them
on my web log:
Smart meter
Ethernet Doorbell
Mantis CNC Mill
DIY Wireless Sensors

Last pages added:

Opentherm Gateway
Smart meter
Nemef Radaris Evolution
Audio Video

Monitoring water consumption

This Excel graph shows how i kept an eye on our water usage before i had watermetes installed and connected to my HA system:

Here's how it is done nowadays: Watermeters, some additional hard- and software, a SQL database and some VB code makes it possible to view the water usage realtime. Every time this page is viewed, these charts are created "on the fly".

In August 2007 i started monitoring water usage in our house. I bought 2 water meters: one for hot water usage and one for the tot water usage. Some time went by before i installed them, but once installed, displaying the water usage online was a matter of minutes, because all other hardware needed (counter, 1-wire cable and so on) was already in place for the gas usage. So it was just a matter of pugging the meter in and off we go! You can see the results of the water usage monitoring here.