Suggest a suitable board for rain drop sensor.

Projects General Guidance
1

I have purchased a rain drop sensor. it is actually a 5v potentio meter.. I need to get a dc motor running when it detects a rain drop. the speed of the motor should increase as rain increases. Can any body suggest a board and program. i am completely new to this electronics.

rain sensor.jpg
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2

Can't help you without more info on the sensor. Post the link to the vendor OR the datasheet for the sensor.

3

This can give u an idea about the sensor. this guy shown how to connect to a laptop. but i want connection to a dc motor and it should vary speeds.

Thank you

4

Pro-Mini

5

how to use it. can u give me any program. plz help me. i have to submit that project on monday.

6

I need to get a dc motor running when it detects a rain drop. the speed of the motor should increase as rain increases

How does the sensor detect the rate of drops falling?
Surely, once one of the tracks is bridged, it stays there and the sensor remains triggered.
Maybe if you put the sensor at an angle so that drops run off, you could use trigger events to calculate rate.

7

Google "arduino controlling dc motor with potentiometer"

8

SaiSurya91:
how to use it. can u give me any program. plz help me. i have to submit that project on monday.

In my opinion it cannot be done. You should have started earlier. When was the project given to you?

It would be better to do something than nothing and get at least a few marks. Do you have an Arduino of any kind, or can you get one? Do you havd some leds also? If so, you might be able to build something which uses the leds to show how fast the motor would go.

Paul

9

cant we replace potentio meter in this video with the rain sensor. Yes the sensor gets triggered on first drop. but as the number of droplets increases, resistance increases and analog output decreases. so as that the motor speed should vary.

10

cant we replace potentio meter in this video with the rain sensor.

Sure. You have our permission. Not that you needed it.

Yes the sensor gets triggered on first drop. but as the number of droplets increases, resistance increases and analog output decreases

You know this how? You have some code that proves it? If so, mapping the data you have to a value for analogWrite() to control the speed of a motor is trivial.

11

I didn't watch the video but wouldn't the resistance decrease with more water ? Isn't this why you're not supposed to use an electric hair dryer when you're in the bathtub ?