{"id":22600,"date":"2016-07-14T11:56:08","date_gmt":"2016-07-14T11:56:08","guid":{"rendered":"http:\/\/randomnerdtutorials.com\/?p=22600"},"modified":"2019-04-02T10:23:32","modified_gmt":"2019-04-02T10:23:32","slug":"guide-for-rain-sensor-fc-37-or-yl-83-with-arduino","status":"publish","type":"post","link":"https:\/\/randomnerdtutorials.com\/guide-for-rain-sensor-fc-37-or-yl-83-with-arduino\/","title":{"rendered":"Guide for Rain Sensor FC-37 or YL-83 with Arduino"},"content":{"rendered":"

The rain sensor is used to detect water and it can detect beyond of what a humidity sensor do. This article explains how to use the FC-37 rain sensor module with the Arduino.<\/p>\n

The FC-37 rain sensor (or other versions like YL-83) is set up by two pieces: the electronic board (at the left) and the collector board (at the right) that collects the water drops, as you can see in the following figure:<\/p>\n

\"rain<\/p>\n

The rain sensor has a built-in potentiometer for sensitivity adjustment of the digital output (D0). It also has a power LED that lights up when the sensor is turned on and a digital output LED.<\/p>\n

\"labeled<\/p>\n

You can also read this guide for the Soil Moisture Sensor YL-69 or HL-69 with the Arduino<\/a>.<\/p>\n

How does it work?<\/h2>\n

Basically, the resistance of the collector board varies accordingly to the amount of water on its surface.<\/p>\n

When the board is:<\/p>\n