The block diagram of this simple project is shown in Fig. 1 and its circuit diagram is in Fig. 2. The project is built around water temperature sensor probe DS18B20, a 4-digit multiplex 7-segment ...

Fig. 1: Block diagram of home automation system using Arduino Fig. 2: Circuit diagram of home automation system using Arduino Relay connections marked as x, y, COM (common), NO (normally open) and NC ...