CHIC is the code name I gave to my project. It’s an acronym for:
Clos du Lac
Right now the prototype is running, albeit turning on a LED instead of a sprinkler valve. There is an image map of the community on a web page where the user can click on the lot number to see the current status of the sprinkler for that lot. A dashboard is displayed with information regarding the current status, days of week to water, the length of time to water as well as a manual on/off control. The manual on has a built in timer for 60 seconds, just in case you forgot to turn it off. I added this in case of maintenance needs i.e. checking for leaks or testing out the water pressure.
I tried to keep the code simple. The device calls the agent every hour to see if it is the correct day and time to water. I use the server to store the days and duration to water. The start time is set to a default of 7:00am PST.
The proposal to the HOA is that each homeowner has one of the Imps connected to their wifi network (i’m assuming that everyone has a wifi set up in my neighborhood) and connects to the the sprinkler for the front yard vines. For final hardware I think I could leverage from the Jane design. I would only need the Imp, 24v regulation down to 3.3v and the thyristor to control the valve. Perhaps one LED to indicate watering or flashing for manual mode.