help me with my arduino!

alifshaer — Tue, 19 Nov 2019 01:54:47 +0800

Hi, im currently doing a simple project using arduino with sensors and esp8266-01. i think im doing the correct coding but it seems to not working out. Please help me (p/s: im still learning my way into the programming world)

Im trying to send data rom my sensors into a server website which is thngspeak.com and heres are my source code;

#include <SoftwareSerial.h>
#include <LiquidCrystal.h>
#include <dht.h>
LiquidCrystal lcd(10, 9, 5, 4, 3, 2);

dht DHT;
dht DHT_11PIN;

float t=0;
float h=0;

#define DHT11_PIN 8
#define LDR_PIN A1
#define MQ3_PIN A0

char data = 0;
int ldr_read = 0;
int gas_read = 0;

String apiKey = "1NDFIY1Z742BL0XH";
SoftwareSerial ser(0,1); // RX, TX

void setup()
{
ser.begin(9600);
lcd.begin(16,2);

lcd.setCursor(1,0);
lcd.print("**SmarT FooD**");
lcd.setCursor(3,1);
lcd.print("MonitorinG");
Serial.begin(9600);

// reset ESP8266 WiFi connection AT+CIPMUX=1 AT+CWJAP
ser.println("AT");
delay(1000);
ser.println("AT+GMR");
delay(1000);
ser.println("AT+CWMODE=3");
delay(1000);
ser.println("AT+RST");
delay(5000);
ser.println("AT+CIPMUX=1");
delay(1000);
String cmd=("AT+CWJAP=""alsafa@unifi","alsafa71");
ser.println(cmd);
delay(1000);
ser.println("AT+CIFSR");
delay(1000);
}

void loop()
{
lcd.clear();

ldr_read = analogRead(LDR_PIN);
lcd.setCursor(0,0);
lcd.print("LDR-");
lcd.setCursor(4,0);
lcd.print(ldr_read);

lcd.setCursor(0,1);
lcd.print("MQ3-");
gas_read = analogRead(MQ3_PIN);
lcd.setCursor(4,1);
lcd.print(gas_read);

int chk = DHT.read11(DHT11_PIN);
Serial.print("Temperature = ");
t = DHT.temperature;

lcd.setCursor(8,0);
lcd.print("Tem-");

lcd.setCursor(12,0);
lcd.print(t);
Serial.println(t);

Serial.print("Humidity = ");
h = DHT.humidity;
lcd.setCursor(8,1);
lcd.print("Hum-");
lcd.setCursor(12,1);
lcd.print(h);
Serial.println(h);
esp_8266();

}

void esp_8266()
{
String cmd = "AT+CIPSTART=4,\"TCP\",\"";
cmd += "184.106.153.149";
cmd += "\",80";
ser.println(cmd);
Serial.println(cmd);
if(ser.find("Error"))
{
Serial.println("AT+CIPSTART error");
return;
}

String getStr = "GET /update?api_key=";
getStr += apiKey;
getStr +="&field1=";
getStr +=String(t);
getStr +="&field2=";
getStr +=String(h);
getStr +="&field3=";
getStr +=String(ldr_read);
getStr +="&field4=";
getStr +=String(gas_read);
getStr += "\r\n\r\n";

cmd = "AT+CIPSEND=4,";
cmd += String(getStr.length());
ser.println(cmd);
Serial.println(cmd);
delay(1000);
ser.print(getStr);
Serial.println(getStr);

if(ser.find(">")){
ser.print(getStr);
}
else{
ser.println("AT+CIPCLOSE");
// alert user
Serial.println("AT+CIPCLOSE");
}

delay(3000);

}

the reading is shown in the lcd but i cant make it appear in the website
ive been doing this for almost 2weeks and cant seek help anywhere else. help me (((((

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