I have just assembled an emonGLCD which I ordered in June 2014.
It worked! However I have a few questions regarding displaying information.
On my emoncms install running locally on an RPi I have a page which shows “PV Generation”, “Nett Power Use” (which is the amount of power coming from/going to the grid) and “Real Power Use” which is the amount of power the household is using.
On the emonGLCD I expected that the top left window with the House icon would reflect the equivalent of the “Real Power Use” in emoncms and the bottom left window with the Transmission Tower icon would show arrows pointing away from the icon when I am consuming/exporting power equivalent to “Net Power Use” in emoncms.
What appears to be happening is the House icon area is actually showing the “Nett Power Use” and the Transmission Tower icon area is displaying solar output minus the “Nett Power Use” displayed in the House icon area.
I’m confused too believe me.
emonTX V3 is using emontx.power2 for grid power and emontx.power3 for solar power - emontx.power1 would never calibrate correctly when I first installed the emonTX.
I have changed the SolarPV.ino sketch to reflect these inputs and am getting the figures as displayed in the attached photo.
As a complete noob to anything to do with sketch programming I would like some assistance as to what I need to change in the sketch to display the fields with the correct figures.
I know it is something I am a) over my head in and b) doing something daft to make it not work correctly.
Where in the sketch is the math done to calculate the data to populate the displayed fields?
Another quick question. When I first installed the emonTX I changed the const float Ical fields as below to fine tune my system.
const float Ical2= 92.6; // (2000 turns / 22 Ohm burden) = 90.9
const float Ical3= 87.7; // (2000 turns / 22 Ohm burden) = 90.9
After I had the emonTX installed and tucked away under the house I also needed to fine tune the emoncms feeds with Calibration once I had it up and running. As a result the figures shown on the emonGLCD reflect the data received from the emonTX. Is there any way of calibrating the data in the SolarPV.ino sketch?
Gary (who is floundering a bit at this stage)