Smart Irrigation System Using Homematic IP

General
1

I’ve been working on a smart irrigation system using Homematic IP, and I wanted to share my experience and setup with the community. This project has been a great learning opportunity, and I hope it can inspire others to explore similar solutions.

The Challenge:
My garden relies on a deep well for water, but the water supply isn’t sufficient for prolonged irrigation. I decided to utilize an old, unused three-chamber septic tank as a water storage solution. The goal was to have the tank continuously filled from the well while ensuring efficient watering of the garden using a separate pump with a good filter.

The Solution:
I designed a system where the well pump fills the tank until it’s full, monitored by a float switch. The garden pump then operates on a timer or manually for a set duration. To automate this, I created a custom float switch using readily available materials.

Components Used:

  • Float Sensor: A recycled plastic bottle with a weight to keep it submerged when the tank is empty.
  • Homematic IP Window Contact: Acts as the float sensor by detecting the water level.
  • Homematic IP Switches: Control the well and garden pumps.

Setup Details:

  1. Pump Wiring: Both pumps are connected to Homematic IP switches for remote control.
  2. Float Mechanism: The float is attached to a nylon rope that runs through a pulley system inside a conduit. The rope is connected to the Homematic IP window contact, which sends signals based on the tank’s water level.
  3. Automation Rules:
    • Turn on the well pump when the tank is low (window contact open).
    • Turn off the well pump when the tank is full (window contact closed).
    • Schedule the garden pump to run daily at 7:00 AM for 30 minutes.

Results:
This system has been running smoothly for six weeks now. It’s been a cost-effective and efficient solution for my garden’s watering needs. The best part is the ability to control everything through the Homematic IP app or even Amazon Alexa!

I’d love to hear from others who have implemented similar solutions or have tips for improving this setup. Let’s continue to innovate and share our experiences in the smart home community!

Best regards,
[Your Name]