Rain Detector / Rain Sensor

Rain-sensorSome models come with a basic analogue to digital converter that's adjustable.  It requires a 3 volt and ground connection, and has a signal line which triggers when wet.

I wired the signal connector directly to a GPIO.  It may also run at 5volts but didn't want to risk the pi.

2pcs Rain Sensor Detector Module Raindrop Detection Shield Arduino Compatible US
2pcs Rain Sensor Detector Module Raindrop Detection Shield Arduino Compatible US $8.77
End Date: Sunday Sep-8-2019 17:51:46 PDT
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Rain Water Level Sensor Depth Detection Module For Arduino Liquid Detector Drop
Rain Water Level Sensor Depth Detection Module For Arduino Liquid Detector Drop $1.31
End Date: Monday Sep-23-2019 7:15:39 PDT
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Rain Water Level Sensor Module Detection Raindrop Humidity Arduino Depth Board
Rain Water Level Sensor Module Detection Raindrop Humidity Arduino Depth Board $6.74
End Date: Saturday Sep-14-2019 22:34:36 PDT
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CB7 Snow Raindrop Sensor Detector Module Rain Humidity Module for Arduino New
CB7 Snow Raindrop Sensor Detector Module Rain Humidity Module for Arduino New $2.45
End Date: Saturday Sep-21-2019 20:02:09 PDT
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Sensor Rain Sensor Arduino Detector Module HD Rd Snow Leak Water Weather
Sensor Rain Sensor Arduino Detector Module HD Rd Snow Leak Water Weather $5.69
End Date: Monday Sep-23-2019 8:21:17 PDT
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Rain Water Level Sensor Module Detection DC 3V 5V Liquid Arduino Depth Board
Rain Water Level Sensor Module Detection DC 3V 5V Liquid Arduino Depth Board $5.39
End Date: Saturday Sep-14-2019 20:13:45 PDT
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Arduino Rain Sensor Module Rain Drop Detector Relay Control Module 12V DIY
Arduino Rain Sensor Module Rain Drop Detector Relay Control Module 12V DIY $3.25
End Date: Monday Sep-23-2019 4:30:36 PDT
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Arduino Rain Sensor Module Rain Drop Detector Relay Control Module 12V
Arduino Rain Sensor Module Rain Drop Detector Relay Control Module 12V $4.74
End Date: Wednesday Sep-18-2019 8:21:07 PDT
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Rain Raindrops Snow Sensor Module Detector Pour Suspension Water Wetness Arduino
Rain Raindrops Snow Sensor Module Detector Pour Suspension Water Wetness Arduino $5.45
End Date: Wednesday Sep-4-2019 4:40:00 PDT
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CB7 Snow Raindrop Sensor Detector Module Rain Humidity Module for Arduino New
CB7 Snow Raindrop Sensor Detector Module Rain Humidity Module for Arduino New $2.63
End Date: Saturday Sep-21-2019 19:57:48 PDT
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