#include <WiFi.h>
#include <HTTPClient.h>
#include "DHT.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
const char* ssid = "Wokwi-GUEST"; // isi dengan "Wokwi-GUEST"
const char* password = ""; // ngga perlu password buat wokwi
// Setelan Thingspeak
const char* server = "api.thingspeak.com";
String apiKey = "4VXPM3QDCO1YX5O2"; // Ganti dengan WRITE API KEY channel kamu
#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
Serial.begin(115200);
dht.begin();
lcd.begin(16, 2);
lcd.init();
lcd.backlight();
lcd.setCursor(0, 0);
WiFi.begin(ssid, password);
Serial.print("Connecting to WiFi");
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
Serial.println("\nConnected to WiFi");
lcd.setCursor(0, 1);
lcd.print("nyambung");
delay(2000);
lcd.clear();
}
void loop() {
delay(2000);
float h = dht.readHumidity();
float t = dht.readTemperature();
if (isnan(h) || isnan(t)) {
Serial.println("Failed to read from DHT sensor!");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Failed to read from DHT sensor!");
return;
}
int hRounded = round(h);
int tRounded = round(t);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Nama :Rafi");
lcd.setCursor(0, 1);
lcd.print("Suhu:");
lcd.print(tRounded);
lcd.print("C");
lcd.print(" Hum:");
lcd.print(hRounded);
lcd.print("%");
// Kirim data ke ThingSpeak
if (WiFi.status() == WL_CONNECTED) {
HTTPClient http;
String url = String("http://") + server + "/update?api_key=" + apiKey + "&field1=" + String(tRounded) + "&field2=" + String(hRounded);
http.begin(url.c_str());
int httpCode = http.GET();
if (httpCode > 0) {
Serial.printf("Kode HTTP GET: %d\n", httpCode);
if (httpCode == HTTP_CODE_OK) {
String payload = http.getString();
Serial.println("Payload: " + payload);
}
} else {
Serial.printf("HTTP GET failed, error: %s\n", http.errorToString(httpCode).c_str());
}
http.end();
}
}
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esp:2
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esp:3V3
esp:EN
esp:VP
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esp:GND.1
esp:D2
esp:D3
esp:CMD
esp:5V
esp:GND.2
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esp:CLK
dht1:VCC
dht1:SDA
dht1:NC
dht1:GND
lcd1:GND
lcd1:VCC
lcd1:SDA
lcd1:SCL