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These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. wait 500 milliseconds before the next loop print mapped results to the serial monitor: MappedValue = map(moistureValue,minADC,maxADC, 0, 100) print ADC results to the serial monitor: initialize serial communications at 9600 bps:ĪnalogReference(INTERNAL) //set ADC reference to internal 1.1V Int maxADC = 600 // replace with max ADC value read fully submerged in waterīool is1V1Output = false // set true if 1.1V output sensor is used for 3V set to false Int minADC = 0 // replace with min ADC value read in air The usual maxADC value will be around 600.Ĭonst int analogInPin = A0 // Analog input pin that the sensor output is attached to (white wire) The usual maxADC value will be around 1000.įor 3V version set is1V1Output to false. This example code is in the public domain.įor 1.1V version set is1V1Output to true. * Sensor output (white wire) connect to Analog A0 on Arduino.Ĭonnect VCC (brown wire) to 3.3V or 5V on Arduino (3.3V gives more stable readings)Ĭonnect GND (green wire) to GND on Arduino. Reads analog value of soil moisture sensor and displays it

SoilWatch 10 soil moisture sensor example Output: 0 – 3.0V (approximately) – 3V version Output: 0 – 1.1V (approximately) – 1.1V version Voltage: 3.1 – 5.0V (absolute maximum 5.5V) for 3V version Voltage: 2.8 – 5.0V (absolute maximum 5.5V) for 1.1V version

Soil moisture sensor