Having managed to get my Emonpi to upload to www.emoncms.org, my next task is to try to visualise the data in the way I want.
I have only two sensors. One is a CT sensor for monitoring the power consumption of the house. I have been able to get feeds working satisfactorily from it so I can visualise instantaneous power consumption, power consumption per day, and so on.
The other sensor is a pulse counter, reading the pulses on my PV generation meter at a rate of one per Wh. Getting feeds such as total kWh and kWh per day from this works fine.
However one of the principal reasons for getting the Emonpi was to monitor (more-or-less instantaneously) the power output from my PV inverter. The "solar power" app looks great and I would love to be able to get the solar_power feed working!
In trying to do this I got some guidance elsewhere in this forum that there is an input processor named "kWh to Power" available on www.emoncms.org, which isn't available locally on the Emonpi. I have struggled to get my data uploading remotely but I have finally succeeded.
However I have been unable to configure this input processor. For example, when the output according to the inverter display is around 500W, the value fluctuates every few minutes, showing either 720000 or 1440000. I have tried changing the settings in the input processor but this doesn't seem to make any difference. How is this processor supposed to work, and am I trying to get it to do something it wasn't designed to do? Help please!
Re: Deriving solar power from pulse counter
Another option might be to add a second CT for monitoring the output from your PV. You would then be able to process both feeds in a similar manner.
This approach may be better suited to your objective "to monitor (more-or-less instantaneously) the power output from my PV inverter."
Re: Deriving solar power from pulse counter
Thanks Robin. Unfortunately it's not that simple as my inverter output is 3 phase. Thanks to Eric in another thread I have managed to get the processor functioning and I can now visualise my data nicely. Although the solar power app doesn't work on my Blackberry smartphone :-(