Arduino controlled garden watering system

The watering system consists of two parts. This is the manifold part of the system - this is the part that goes out in the garden. The other part is the faucet part - which is the part that is connected to the faucet. The manifold part has a flow sensor on the input, and a solenoid valve on each of the 48 outputs. It is then possible to adjust the amount of water fed to each plant/tree. When the watering system starts, the manifold part request the faucet part to turn on the water via a rf2g4 module. T