Arduino control of soil moisture

Project for controlling soil moisture 4x (or more plants). The results of control are issued on the monitor, where you can see the general state of plants or separately.
The feature of the system is that it can work autonomously, and the assembly itself is made in such a way that reduces the battery energy consumption. For this, the system is set to enter the "sleep" and wake up from the key; the switching and reading from the sensors occurs a short interval of time; the sensors themselves are connected to the ports that can be set to the minimum energy consumption. As a result, on the Chinese 2mA battery the system works about a week (with the fact that the project has chosen the most "progress" arduino plate: it was simply overwhelming available:) ) . The project can be downloaded or viewed by link.