#define SENSOR_POWER 2
#define SENSOR_SIGNAL 34

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(SENSOR_POWER,OUTPUT);
  digitalWrite(SENSOR_POWER,LOW);
}

void loop() {
  digitalWrite(SENSOR_POWER,HIGH);
  int a=analogRead(SENSOR_SIGNAL);
  Serial.print("The WaterLevel is: ");
  Serial.println(a);
}