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How can i order the rain sensor please? and how much is it? Answered

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Vyger

2 years ago

Since you had to ask a second time my price is now $59.99, full retail value.

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iceng

2 years ago

Leave a message with the author by going to his page from the ible

https://www.instructables.com/id/Arduino-Modules-Ra...

If he is too busy to respond go to

https://www.adafruit.com/

sells those things.

Unlike a switch, a drop of water, is like a resistor and two drops are like two resistors in parallel which if you know DC circuits will present a lower DC resistance to an analog_to_digital_converter ADC present in most micro processors.

You need to have alternating metal strips attached to a insulating waterproof support structure like a glass, fiberglass, or most plastics and a position that self drains any water after a while.. You could try to use a $3 ohm meter to measure the rain...