AC 230V energy meter

[jocke4u]

Hi,

I have mounted a 3-phase energy meter on my water heater which has a S0 signal that I use in a modified version of http://www.mysensors.org/build/pulse_power
It works just fine except for one small detail, it get stuck to the last watt value when it shuts off (0 watt) because no S0 signal and therefore no interrupt.
The fix I have applied right now is to invalidate watt variable (set to 0) if it's more than 7 sec ago since last blink.

I wonder if there are a better solution to this, do you have an idea?

/ Jocke