2.1.1 Water sensor This project is designed to alert the operator of a water borehole when the tank is full so that there wouldn’t be wastage of water and power. It is designed in accordance with the request of our supervisor and it has been constructed on a Vero-board, although the PCB layout of the design was also prepared but not implemented considering the economics aspect of the design (cost). The circuit diagram and the constructed picture is shown below (Fig. 2.1.1a and Fig. 2.1.1b) respectively. Fig.2.1.1a-circuit diagram of the water sensor Fig.2.1.1b- constructed picture of the water sensor