Introduction
This project is an intelligent control for garden irrigation to conserve water on colder/wetter days and to water more on hot/dry days.
An Internet connected Raspberry Pi is also connected (via GPIO header) to a relay which connects to a solenoid operated valve on an irrigation system.
A nodeJs server runs on the Pi and it checks for the weather forecast each morning for the upcoming day, works out the required demand for watering (high, med or low).
Watering schedules are configured by the user for each of the watering demand levels (high, medium, low) and stored in a database.
Based on the watering demand for the day, a scheduler reads the relevant watering times from the database and operates the solenoid valve via the GPIO header based on the time slots.
There is a web interface to setup the watering time slots and to override the watering control.

Installation
Mongo DB and NodeJs needs to be installed
npm install will install all required node modules except for rpio - this module will not work on a Windows machine and maybe not a Mac? So if testing or doing dev work on a machine other than a Raspberry Pi things will be fine, if installing on a Pi, also run: npm install rpio

Running
First, start mongod
There are two serverJs files, again this is so dev/testing work can be completed on a machine which isn't a Raspberry Pi. server.js is the file to run on a Rpi (node server.js) and serverDev.js is a copy of server.js but it has any rpio module references commented out so please run this if not on a Rpi - obviously there will not be any rpio functionality.
Web ui can be access from http://localhost:3333

Technologies used
Server:
Raspberry Pi hardware runs Express, MongoDB, cron like scheduler, Dark Sky weather api and a rpio module to allow nodeJs access to the GPIO headers on the Raspberry Pi
Web ui:
Fairly standard web ui, using Materializecss, Ajax requests to DB

Current status of project:
This is now a working project, it is an MVP right now though!