Hogyan működik: https://www.youtube.com/watch?v=B7UIgOLMYoY
/*
* Created by ArduinoGetStarted.com
*
* This example code is in the public domain
*
* Tutorial page: https://arduinogetstarted.com/tutorials/arduino-water-sensor
*/
#define POWER_PIN 7
#define SIGNAL_PIN A5
int value = 0; // variable to store the sensor value
void setup() {
Serial.begin(9600);
pinMode(POWER_PIN, OUTPUT); // configure D7 pin as an OUTPUT
digitalWrite(POWER_PIN, LOW); // turn the sensor OFF
}
void loop() {
digitalWrite(POWER_PIN, HIGH); // turn the sensor ON
delay(10); // wait 10 milliseconds
value = analogRead(SIGNAL_PIN); // read the analog value from sensor
digitalWrite(POWER_PIN, LOW); // turn the sensor OFF
Serial.print("Sensor value: ");
Serial.println(value);
delay(1000);
}
forrás:
https://arduinogetstarted.com/tutorials/arduino-water-sensor
