December 2016

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Saturday, December 31st, 2016 12:00 am
Some time ago I started experimenting with IoT (Internet of things), using primarily Arduino. This blog is a simple diary of my experiments.

As the base project for my experiments I'm working on the SmartGarden - an intelligent multi-station irrigation and environment monitoring
system.

Initially I started from just irrigation part, using OpenSprinkler design, later on moving to the more advanced Sprinklers_pi (running on Arduino Mega) firmware, adding to it more and more features and capabilities. As I was adding more and more new things - multi-station support using RF network of nodes, sensors data collection and logging etc, I've rewritten large parts of the code and changed hardware design.

Currently the project reached v1.0 release (running my home irrigation system since May 2015). The system is stable and reliable.
It is still work in progress, with some fit-and-finish required (WEB UI improvements etc), but it is good enough to use.

Also I'm working on the next generation of hardware and firmware (v1.5). As of mid-Oct 2015 v1.5 is nearly-ready, I will be upgrading my setup to it before next watering season starts.

Source code for my project (both hardware schematics and firmware source) is available on GitHub: https://github.com/tony-osp/SmartGarden.

Friday, February 24th, 2017 07:14 pm (UTC)
This is a great project you're developing here. I was initially looking at Ray's as well since I have the Orbit 91592 Valve. Like you, however, I felt it was overly complicated for my needs.

What I'm trying to sort out at the moment is that since I don't have a traditional 24vac irrigation power supply, shouldn't I just start with a 24vdc power supply? It would seem that would save me from having to build a rectifier. The max distance from the 16 channel relay module to the valves is 50 ft. Is that a concern for the current pulse? If I can go with 24vdc, what current is best? I have a couple old laptop power supplies at 19.5vdc and 4.6 amps, and recycling is fun but that seems like too much current.
Sunday, February 26th, 2017 04:12 pm (UTC)
Thanks for answering my questions. I was looking in the Hardware folder in the repo for SmartGarden and I'm not seeing the parts that control the valve (RC circuit, relay, etc). Could you add the Eagle files for that?