Introduction: Smart Modification of a Irrigation System

Material list:

IP67 Distribution box

24V IP67 Power supply

shelly RGBW2

Step 1: Existing System

Four irrigation circuits with Gardena irrigation
valves 24V (1278-20)

(The picture shows only three of the valves in a valve box. The fourth valve is in a separate box)

Step 2: Electrical Installation:

From Gardena direct there is no smart solution for an irrigation system with valves. Since I've already tried a lot with shellies, I came up with the idea to control the valves with a shelly RGBW2 with four separate channels. The connection is very simple (Fig.1). I housed the shelly RGBW2 in an IP67 junction box (Fig.2) and connected it to a 24V power supply (Fig.4).

The connection of the power supply to the 220V power
supply should be done by an electrician. So please be careful, especially if you are not very familiar with electrical installations !!!

Step 3: Setting Up the Shelly App

1) Set Device Type to 4x white stripes LED, then appear

four separate buttons in the app

2) Set the switch compartment type

3) Set the standard mode Power on to Off, so that the system at

after a brief power failure, the valves do not turn on again.

4) Now the individual channels can still be named

A routine can then be created in the shelly app or in the Alexa app so that the four irrigation circuits are switched on one after the other.

Step 4: