Can the OpenSprinkler be modified or adapted to utilize DC latching solenoids on the irrigation control valves? I’d love to be able to try this system, but all the locations where I would want to use it do not have AC power. I currently use battery operated controllers (such as the ones made by DIG Corporation or Hunter Industries) and 9 volt DC latching solenoids. The advantage to these solenoids is that they only require a 10 millisecond pulse to open the valve, and they do not draw any current while the valve is watering. The disadvantage is that the voltage polarity must be reversed in order to close the valve.