esp8266 moisture detector v1

wet.ino

/* wetness sensor v1 
 *  active buzzer is connected to D1
 *  sensor is connected to A0
 *  temp sensor is connected to D3
 *  lolin nodemcu uses D4 for its LED
 */

#include <ESP8266WiFi.h>

#define THRESHHOLD 20
#define BUZZER D1
#define LED D4

const char* ssid     = "network";
const char* password = "password";

void setup() {
  Serial.begin(9600);
  pinMode(BUZZER, OUTPUT);
  pinMode(LED, OUTPUT);
  delay(10);

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");  
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

int value = 0;

void loop() {
  int wetness = analogRead(A0);
  Serial.printf("analog %d\n", wetness);
  digitalWrite(BUZZER, wetness < THRESHHOLD ? LOW : HIGH);
  digitalWrite(LED, wetness > THRESHHOLD ? LOW : HIGH);
  delay(1000);
}