Gardening improves health and quality of life, connecting us to our local environment. Plus, you can eat organic fruits and veggies at very little cost. Yet for all these fantastic benefits, remembering to water can still take a backseat to our busy lives. Fortunately, home automation is easier than ever with inexpensive and accessible microcontrollers like the Raspberry Pi and Arduino.
This tutorial details the construction process for a remotely controlled solenoid irrigation valve. In other words, a home computer controls the water flow of an outdoor hose spigot, or bib. The materials cost is about $30-40, excluding the Raspberry Pi (RPi). Cheaper parts can be found with patience and creativity.
The design is intended as a simple introduction to building a complete, personalized home irrigation system. It is also intended to encourage simple DIY solutions to everyday problems. Make modifications and upgrades to suit your needs, resources, and skill level. To conserve water, include drip irrigation and a soil moisture sensor.
Note: This project involves high voltage which requires extreme caution. Always check power connections before touching exposed wires.