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RAIN SENSOR

Original price was: ₹299.Current price is: ₹149.

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A rain sensor is one kind of switching device which is used to detect the rainfall. It works like a switch and the working principle of this sensor is, that whenever there is rain, the switch will be normally closed. The rain sensor module/board is shown below. This board includes nickel-coated lines and it works on the resistance principle. This sensor module permits gauging moisture through analog output pins & it gives a digital output while the moisture threshold surpasses.

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General Description:

A rain sensor is one kind of switching device which is used to detect the rainfall. It works like a switch and the working principle of this sensor is, that whenever there is rain, the switch will be normally closed. The rain sensor module/board is shown below. This board includes nickel-coated lines and it works on the resistance principle. This sensor module permits gauging moisture through analog output pins & it gives a digital output while the moisture threshold surpasses.

Working Principle:

Raindrop sensor works on the principle of resistance. The principle is that when there is no raindrop on board, the resistance is high so we can get high voltage according to V=IR. When raindrops are present the resistance is reduced as water is a conductor of electricity and its presence connects nickel lines in parallel so the reduced resistance and there is a voltage drop across it.

Specifications:

1. This sensor module uses good quality double-sided material.

2. Anti-conductivity & oxidation with long-time use.

3. The sensitivity can be adjusted by a potentiometer.

4. For easy installation, it uses bolt holes.

5. It uses an LM393 comparator with wide voltage.

6. The output of the comparator is a clean waveform and the driving capacity is above 15mA.

Requirements

 

S. No. Component Name 220R , 1K
1 LM393 (Voltage Comparator)
2 Resistors 150R,1K,10K,100K
3 Variable Potentiometer 100k
4 LED’S
5 Male Connector Pin 6
6 Capacitors 1uF

 

Pin configuration:

 

S. No. Pins Pin Description
1 VCC (+) 3.3-5v
2 GND(G) Connect to ground
3 D0 Digital output pin
4 A0 Analog output pin

Applications:

1. Irrigation.

2. Automobile industry.

3. Weather Stations.

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