Product Manual Tutorials Menu ... Search Moisture Sensor (SKU:SEN0114) Contents 1 2 3 4 [hide] Introduction Specification Usage More Introduction This Gravity: Analog Soil Moisture Sensor For Arduino can read the amount of moisture present in the soil surrounding it. It's a low tech sensor, but ideal for monitoring an urban garden, or your pet plant's water level. This is a must have tool for a connected garden! Gravity: Analog Soil Moisture Sensor For Arduino This moisture sensor uses the two probes to pass current through the soil, and then it reads that resistance to get the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly (more resistance). It will be helpful to remind you to water your indoor plants or to monitor the soil moisture in your garden. Specification Power supply: 3.3v or 5v Output voltage signal: 0~4.2v Current: 35mA Pin definition: Analog output(Blue wire) GND(Black wire) Power(Red wire) Size: 60x20x5mm Value range: 0 ~300 : dry soil 300~700 : humid soil 700~950 : in water Usage Moisture sensor Connection diagram /* # # # # # Example code for the moisture sensor Editor : Lauren Date : 13.01.2012 Version : 1.0 Connect the sensor to the A0(Analog 0) pin on the Arduino board # # # # the sensor value description 0 ~300 dry soil 300~700 humid soil 700~950 in water */ void setup(){ Serial.begin(57600) } void loop(){ Serial.print("Moisture Sensor Value:") Serial.println(analogRead(A0)) delay(100) } Open the Arduino Serial Monitor, and choose its baud rate 57600 as set in the code. More Share Relative humidity to absolute humidity calculator Shopping online from Gravity: Analog Soil Moisture Sensor For Arduino or DFRobot Distributor. Related category: DFRobot > sensors & modules > sensors > Temperature & Humidity Sensor Categories: Product Manual What links here DFR Series Related changes Sensors Special pages Printable version Permanent link Page information This page was last modified on 25 May 2017, at 14:37. Content is available under GNU Free Documentation License 1.3 or later unless otherwise noted. Privacy policy About DFRobot Electronic Product Wiki and Tutorial: Arduino and Robot Wiki-DFRobot.com Disclaimers