SEN0114

  Moisture Sensor (SKU:SEN0114) Contents    1 Introduction 2 Specification 3 Usage Introduction This moisture sensor 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! This 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 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 70050 : in water Usage Moisture sensor Connection diagram /* # Example code for the moisture sens or # Editor : Lauren # Date : 13.01.2012 # Version : 1.0 # Connect the sensor to the A0(Analo g 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 http://planetcalc.com/2167/ Powered By DFRobot © 2008-2017