How to make a rain alarm at home

Introduction:

Rain detector circuit is the device which will really work as you wish what you want to do. It is a device which will generate the signal when the rain comes. The frequency will be more when the rain is heavier and the frequency is very less when the rain will be low. It all means that the frequency will depend on the rain. We always should focus on the signal making. Don’t focus on the rest of the part which we have to make it. When we get the signal now we can do anything we want to do.

We will make a single wire circuit so that the circuit is easy and every reader can read it. Double wired is quite complicated and the circuit which is made has to be with an IC’s so I will prefer today to show you with a single cable and for the complicated circuit you may go to the article how to make a rain detector with IC’s.

1^st experiment:

As you know that not a single machine is made with having all facilities in the first attempt so here it goes.

This is the easiest circuit that you have ever seen. In the practice of school, this is done in 5^th or 6^th class. It is very easy to make and only a few cheapest thing is required.

Aim: To make rain detector.

Material required:

                LED, connecting wire, battery and a zigzag switch like in calculator.

Procedure:

        1. Connect everything as you can. I hope that you can glow the led by connecting the wire. And you will not see in the pitcher for help you can see this picture.

        

        2. Prepare rain detector probe. For that only connect the wire on the two end of the switch.

       

         3.   Connect wire of that length so that the detector reaches your roof.

         4.   Cut the wire of the led circuit from anywhere.

        5. Connect the detector in the terminals of the led circuit.

        6.  Now when the rain will come or the detector pad becomes wet by any source then the circuit will glow

 We have made a circuit that will work according to the rain. But there are a lot of disadvantage on this circuit.

Advantages:

        1.  It is very cheap.

        2.  The battery lasts very much.

        3.  Not risky.

        4.  No harmful effect.

        5.  The circuit can be made by everyone.

Disadvantages:

       1.  It doesn’t tell about the speed of the rain which is fallen on the roof.

       2.  It will send a signal or the led will be glowing until the detector becomes wet.

       3.  It something is over that then the detector will not work until it gets wet.

       4.  There is so many problems that you will face when you will make this circuit.