Water level buzzer
Water level Buzzer is a Simple circuit which will buzz when waster level reaches the sensor level. From the point of view of mini projects this will definitely help making the easy mini projects and too cheap.
Components Used :
2 PCB pins
BC 547 transistor
1. Fix the power supply on the board
2. The components must be placed on the board by the reference of the circuit diagram.
3. When the components are been placed and then dip the Sensor at the level at which you want the sensor to buzz.