I sort of hijacked another thread, with this, so I thought I would give this idea its own thread...
I have a project idea that can use something like this and i am looking which way to go. What i have is this. A solar power setup, that has panels, a battery bank, and a standalone inverter, and it is wired into a changeover relay, into my house's main swtchboard. A uhf remote controlled reciever is cammanding it when to turn on or off. So at this stage, i have to look at the battery bank voltmeter to see if its charged enough to run for a while. When the sun is shining it can charge at 25amps, whn the voltage gets to 14v, its full. I can then press the remote on button, the inverter powers up, and the relay changes over, the house is then running on the inverter. When the battery voltage gets down to 11volts, the inverter drops out, and the changeover relay drops out, reverting the house back to standard mins power, without my help.
What i would like is a web based system, that shows its system voltage (12volts, so i can see the state of charge of the battery bank being charged by the solar panels) without being home ( using iphone or other pc) and even program the arduino to power up the inverter when the batteries are full. A nice web page showing a full list of history, charge state, current flow etc, would be nice. So two way data flow.....
Even a history graph of current flow in and out? So I would connect the arduino uno analog pins to a voltage divider to sense battery voltage, and another pin to a current shunt to sense power being used etc And voltage history?
Any ideas? So to get started should I buy a ethernet sheild for my uno or something else? It needs to be web based so its accessable outside of home ( not wifi only)
Theres just so much arduino ethernet and wireless stuff on the net now, im just confused, dont know what way to persue. Does anyone have the expertise and experience in this to show me which way to go?