#rainalarm #raindetector #schoolproject #scienceproject #DIYproject
Hi Guys,
In this video we are going to see how to make rain detector (rain alarm) at home.
*This rain detector will give the alarm when it is raining.
Components Used here is :
1.Battery : 9V
2.ON / OFF switch
3.Transistor : BC 547
4.Buzzer (Active) - 5V
5.LED - (optional)
6.Blades -2
7.Connecting wires
Working Principle :
The main component of this circuit is a BC547 transistor that is working as a switch in this circuit.The blades act as a sensor.To make this project cheap, and to do all kind of people I have used blades as sensor.Otherwise we can use rain sensor instead of blades.
The blades are sensitive to raindrops. When the water droplets fall onto the blades(sensor) it turns the circuit ON as water is a great conductor of the electricity. Now the voltage will be passed to the transistor and it receives its required 9V. This will activate the transistor which results in activating the buzzer connected to it.
The buzzer acts as an alarm in this circuit and it will let the user know about rain.
*While making this circuit make sure that the gap between 2 blades are not more than 2mm, to get better performance.
Applications and Uses:
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A rain sensor alarm is a very useful device to alert when it is raining. It can be used in several areas and places where the user wants to be alerted the moment a single raindrop falls.
If you are having any doubt regarding this pls comment in the comment section.You are more welcome for the clarification.
Happy Learning!
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Buying Link :
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For LED :
www.amazon.com...
For ON /OFF switch:
www.amazon.com...
For Transistor:
www.amazon.com...
For Buzzer:
www.amazon.com...
For connecting wires:
www.amazon.com...
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