OpenSprinkler with Custom Web App (Updated)

I recently purchased an OpenSprinkler from Ray’s Hobby and am very impressed thus far! The device has accomplished its primary task of moving the controls away from a central box in the garage to any networked device (iPhone, iPad, laptop, etc.). It comes provided with a wonderful web interface out of the box. The install was very easy! I already had a Hunter irrigation control system and simply unplugged everything from it and moved over the connections to the OpenSprinkler. I even used the housing of the old system to house the new system. Below is a picture of the final physical install:

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