Irrigo, WiFi garden irrigation system

I would like to share with the community my homeassistant controlled irrigation system.
I have made it with an ESP32 board, a relay board and some 24VAC valves.

These are some interesting features of Irrigo:

WiFi connectivity
Simple Web Interface for configuration
MQTT enabled
4 Channels
Simple Web Firmware Update
Compatible with Home Assistant
Flexible
Supports 24V AC valves
Web GUI

In the picture below you can find an easy scheme of the connections:


The project is open source and you can find the code on github:

feel free to use it and let me know if you found it useful,

Carmix

Nice work!
Where do you physically place the ESP32+Relays: in the house and run long wires to the valves, or close to the valves?

Actually I placed ESP32+RELAYS almost near the valves, the nearest valve is at less than 1 meter, the farthest is 8 meters. Anyway I think that you can allow a discreet distance between valves and supply since the power is at 24VAC and there is no much current to trigger the solenoid

Seems nice, what I can see it does not support stand alone mode(it is scheduled thru MQTT) , correct?