Belajar Pertanian - mqtt-tanah

Project MQTT Sensor Kelembapan Tanah

Project ini untuk monitoring kelembapan tanah dari jarak jauh dengan komunikasi MQTT (lebih realtime dan cepat)

Rangkaian:

SIG(Sensor) --> 33 (ESP32)
GND(Sensor) --> GND (ESP32)
VCC(Sensor) --> 3.3V (ESP32)

Note: Jangan lupa masukkan Library MQTT dan WiFi

ESP32 - MQTT.h

#include <WiFi.h>

#include <MQTT.h>

String ssid = "Wokwi-GUEST";

String pass = "";

WiFiClient net;

MQTTClient client;

void konekWifi(){

Serial.println("Coba Konek ke WiFi...");

WiFi.begin(ssid,pass);

while (WiFi.status() != WL_CONNECTED){

Serial.print(".");

delay(50);

}

Serial.println("\nWiFi Terhubung");

}

void konekMqtt(){

while (!client.connected()){

Serial.println("Coba konek ke MQTT...");

if (client.connect("Bebas-Aja")){

Serial.println("Terhubung ke MQTT");

client.publish("wokwi/cek/koneksi", "online");

}

else {

Serial.println("MQTT gagal terhubung");

Serial.println("Sedang konek ulang, sabar!");

}

void setup() {

Serial.begin(115200);

pinMode(33, INPUT);

konekWifi();

client.begin("mqtt-dashboard.com", net);

client.setWill("wokwi/cek/koneksi", "offline", true, 1);

}

void loop() {

if (!client.connected()){

konekMqtt();

}

client.loop();

int baca = analogRead(33);

int s = map(baca, 0 , 4096 , 0, 100);

Serial.println("nilai sensor tanah: "+ (String) s);

if (s > 50){

client.publish("wokwi/cek/kelembapanTanah", "Tanah Basah");

}

else {

client.publish("wokwi/cek/kelembapanTanah", "Tanah Kering");

}

delay (2000);

}

Rangkaian:

SIG(Sensor) --> 33 (ESP32)
GND(Sensor) --> GND (ESP32)
VCC(Sensor) --> 3.3V (ESP32)

Note: Jangan lupa masukkan Library PubSubClient dan WiFi

ESP32 - PubSubClient.h

#include <WiFi.h>

#include <PubSubClient.h>

String ssid = "Wokwi-GUEST";

String pass = "";

WiFiClient espClient;

PubSubClient client(espClient);

void konekWifi(){

Serial.println("Coba Konek ke WiFi...");

WiFi.begin(ssid,pass);

while (WiFi.status() != WL_CONNECTED){

Serial.print(".");

delay(50);

}

Serial.println("\nWiFi Terhubung");

}

void konekMqtt(){

while (!client.connected()){

Serial.println("Coba konek ke MQTT...");

if (client.connect("Bebas-Aja", "wokwi/cek/koneksi", 1, true, "offline")){

Serial.println("Terhubung ke MQTT");

client.publish("wokwi/cek/koneksi", "online", true);

}

else {

Serial.println("MQTT gagal terhubung");

Serial.println("Sedang konek ulang, sabar!");

}

void setup() {

Serial.begin(115200);

konekWifi();

client.setServer("mqtt-dashboard.com", 1883);

pinMode(33, INPUT);

}

void loop() {

if (!client.connected()){

konekMqtt();

}

client.loop();

int baca = analogRead(33);

int s = map(baca,0,4096,0,100);

Serial.println("nilai sensor tanah: "+ (String) s);

if (s > 50){

client.publish("wokwi/cek/kelembapanTanah", "Tanah Basah");

}

else {

client.publish("wokwi/cek/kelembapanTanah", "Tanah Kering");

}

delay (2000);

}