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 $8.49
End Date: Monday Nov-6-2017 16:51:46 PST
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1 Rain detector module and sensor board kit for easy arduino interface DIY DG
1 Rain detector module and sensor board kit for easy arduino interface DIY DG $0.99
End Date: Friday Nov-10-2017 0:39:52 PST
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1 Rain detector module and sensor board kit for easy arduino interface DIY 2O
1 Rain detector module and sensor board kit for easy arduino interface DIY 2O $0.99
End Date: Thursday Oct-26-2017 20:20:08 PDT
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1Pc Hot Rain Detector Module Sensor Board Kit for Easy Arduino Interface DIY
1Pc Hot Rain Detector Module Sensor Board Kit for Easy Arduino Interface DIY $0.99
End Date: Friday Nov-10-2017 3:01:58 PST
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1 Rain detector module and sensor board kit for easy arduino interface DIY HW
1 Rain detector module and sensor board kit for easy arduino interface DIY HW $0.99
End Date: Friday Nov-3-2017 17:54:51 PDT
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RAIN DETECTOR BOARD FOR ARDUINO AND COMPATABLES SHIPS FROM US
RAIN DETECTOR BOARD FOR ARDUINO AND COMPATABLES SHIPS FROM US $0.99
End Date: Thursday Nov-9-2017 7:28:56 PST
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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 $2.58
End Date: Monday Nov-13-2017 17:07:13 PST
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New Raindrop Detection Sensor Snow Rain Detector Weather Module Humidity Arduino
New Raindrop Detection Sensor Snow Rain Detector Weather Module Humidity Arduino $0.99
End Date: Saturday Oct-21-2017 1:21:20 PDT
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Raindrop Detection Sensor Snow Rain Detector Weather Module Humidity For Arduino
Raindrop Detection Sensor Snow Rain Detector Weather Module Humidity For Arduino $0.99
End Date: Friday Oct-20-2017 8:43:15 PDT
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Rain Drip Detector Module Shield Sensor Cable For AVR ARM Arduino Compatible
Rain Drip Detector Module Shield  Sensor Cable For AVR ARM Arduino Compatible $1.99
End Date: Friday Nov-17-2017 19:26:55 PST
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