Automatic Water Tap version 2

This system is a modification from the previous one. In this system, i used a Relay 1 Channel 5V Hi-Lo Input Optocoupler instead of TIP 32 and for voltage step down 12V to 5V, i used a Step Down AMS1117 5.0V In 6-12VDC Out 5.0V instead of 7805. For the solenoid valve, i used AC 220 V Solenoid Valve for water. Sensor i still used the same with the sensor on previous system