First, thanks for your input, this was something I hadn't seen yet.

>>Although this is a worthwile project, the main flaw of course is that you're relying on a PC being up and running 24/7. If you are running Windows, then that isn't possible

1) Maybe I should have mentioned that the controllers would be mostly autonomous (web enabled, embedded controllers). I just didin't want to bore everyone with too much detail.
2) We would likely put out Windows, Linux and Mac versions of the software as well as a web interface.

The links you gave are similar, but note two things.
1) The price at the top of each page is without a PC interface.
2) As far as I can decipher, while the more expensive models say they have two outputs, they seem to be controlled by the same signal (they just provide higher wattage), so it looks like $235 per each independently controlled device. With any luck, that's several times the price we would be shooting for (by having fairly large numbers of inputs and outputs on the same controller).

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