Automatic irrigation module DIY kit soil moisture detection automatic water pumping

Automatic plant watering system. The system does not require a microcontroller. All we need are 4 AA batteries. The system can also be powered with USB. Controlling the watering frequency is regulated by the humidity module using the potentiometer (blue) NOTE: The pump is submersible, so it is important that it works in water, e.g. in a glass.

The set consists of:

1 x relay module
1 x humidity sensor with a regulator
1 x water pump
1 x holder for 4 AA batteries
1 x USB cable
1 x silicone tubing
10 x connection cables

How to assemble the kit? Here is a handy tutorial clip: