Posted in Arduino, Sprinkler Projects on Nov 12th, 2012
Logging is a useful feature which allows you to find out how OpenSprinkler has worked say, in the past week. While you can check the scheduled water programs using the ‘Program Preview’ feature, it does not account for dynamic changes like rain delay, power loss etc. This is where logging comes in handy: you can […]
Posted in CNC, Sprinkler Projects on Oct 21st, 2012
I have a new toy that came in two weeks ago: it’s a Full Spectrum 40W hobby laser cutter! It has been sitting in the shipping box for all this time. This weekend I finally gather everything I needed to set it up, and here are some fresh-made engravings: Not too bad for the first […]
Posted in Arduino, Sprinkler Projects on Oct 18th, 2012
Recently I received a request to customize OpenSprinkler for a 12V DC external relay board. It turns out to be relatively easy to do. Since it may be useful for other folks, I am writing a post here to briefly describe the modifications. First of all, the relay board has built-in opto-couplers and flyback diodes. […]
Posted in Sprinkler Projects on Oct 9th, 2012
OpenSprinkler’s 1-year anniversary! Yes, on Oct 9 last year, the OpenSprinkler project got posted on Hackaday and became known to the world for the first time. A lot of updates have happened during this past year. The hardware has gone through four cycles of changes, and the latest version is 1.4. From August 2011 we […]
Posted in Sprinkler Projects on Oct 8th, 2012
Update: OpenSprinkler 2.0 or above uses a different switching regulator and does not require additional resistor any more. The information below is only relevant to OpenSprinkler 1.x. As you know, OpenSprinkler uses a single 24VAc sprinkler transformer to power both the circuit and the sprinkler solenoids. Frequently people are using a WiFi adapter together with […]
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