Assalammualaikum..
Figure 1.0 Circuit Diagram
Figure 1.0 Schematic diagram
As shown above in figure 1.0, we are using battery 9V as a power supply for this circuit. The operation is when we put the sensor on the diaper, we manually switch it ON until the sensor sense the presence of the wetness.
The basic operation for this circuit is when the sensor sense the presence of wetness, it will give the signal through the I.C NE555. From pin number 3, it will produce the output via LED and buzzer. The LED will lights up and the buzzer will trigger.
The component listed below :
1. R1 - 10k
2. R2 - 1k
3. R3 - 100k
4. C1 - 1uF
5. Battery 9V
6. IC NE555
7. Buzzer
8. BC109C
9. LED
10. Switch
11. Sensor
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