Just drawing out what I think we discussed as a group. A series of "bubble" layers to be filled layer by layer in a predetermined sequence and rate. Sorry for the poor quality, I decided it would just be easier to take a picture of my diagram than try to make it on one program or another.
I just have to figure out what kind of solenoid valve we can use/cheaply get our hands on. I've found some really cheap ones on a surplus website Surplus Shed but they state purpose for low volume air and vacuum applications. Ideally we'd like to be able to use water, but I feel if part availability/price states that filling the bubbles with air is the cheapest and easiest way, you don't argue, especially with a two week deadline.
I also found a range of solenoid valves through an irrigation parts website General Imsubs. I can't begin to express how cool I'd feel if I was the group using an irrigation solenoid valve.
As Neil and I work on this more I'll be able to walk through more detail of how we'll fill the bubbles, but again, material supply will strongly determine what we can actually accomplish.
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