Hi everyone,
I am doing project on Live Temperature and Humidity Monitoring over Internet using Arduino and ThingSpeak. I have added the code for this project also. Can anyone pls tell me how to include Timer.h library .
I am getting following error,
Arduino: 1.8.0 (Windows 10), Board: "Arduino/Genuino Uno"
C:\Users\Admin\Documents\Arduino\Temp_Humidity\Temp_Humidity.ino:4:18: fatal error: Timer.h: No such file or directory
#include<Timer.h>
^
compilation terminated.
exit status 1
Error compiling for board Arduino/Genuino Uno.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
The code is here.
[/#include"dht.h" // Including library for dht
#include<LiquidCrystal.h>
LiquidCrystal lcd(14,15,16,17,18,19);
#include<Timer.h>
Timer t;
#include <SoftwareSerial.h>
SoftwareSerial Serial1(2, 3);
#define dht_dpin 12
#define heart 13
dht DHT;
char *api_key="SIWOYBX26OXQ1WMS"; // Enter your Write API key from ThingSpeak
static char postUrl[150];
int humi,tem;
void httpGet(String ip, String path, int port=80);
void setup()
{
lcd.begin(16, 2);
lcd.clear();
lcd.print(" Humidity ");
lcd.setCursor(0,1);
lcd.print(" Measurement ");
delay(2000);
lcd.clear();
lcd.print("Circuit Digest ");
lcd.setCursor(0,1);
lcd.print("Welcomes You");
delay(2000);
Serial1.begin(9600);
Serial.begin(9600);
lcd.clear();
lcd.print("WIFI Connecting");
lcd.setCursor(0,1);
lcd.print("Please wait....");
Serial.println("Connecting Wifi....");
connect_wifi("AT",1000);
connect_wifi("AT+CWMODE=1",1000);
connect_wifi("AT+CWQAP",1000);
connect_wifi("AT+RST",5000);
connect_wifi("AT+CWJAP=\"1st floor\",\"muda1884\"",10000);
Serial.println("Wifi Connected");
lcd.clear();
lcd.print("WIFI Connected.");
pinMode(heart, OUTPUT);
delay(2000);
t.oscillate(heart, 1000, LOW);
t.every(20000, send2server);
}
void loop()
{
DHT.read11(dht_dpin);
lcd.setCursor(0,0);
lcd.print("Humidity: ");
humi=DHT.humidity;
lcd.print(humi); // printing Humidity on LCD
lcd.print(" % ");
lcd.setCursor(0,1);
lcd.print("Temperature:");
tem=DHT.temperature;
lcd.print(tem); // Printing temperature on LCD
lcd.write(1);
lcd.print("C ");
delay(1000);
t.update();
}
void send2server()
{
char tempStr[8];
char humidStr[8];
dtostrf(tem, 5, 3, tempStr);
dtostrf(humi, 5, 3, humidStr);
sprintf(postUrl, "update?api_key=%s&field1=%s&field2=%s",api_key,humidStr,tempStr);
httpGet("api.thingspeak.com", postUrl, 80);
}
//GET https://api.thingspeak.com/update?api_key=SIWOYBX26OXQ1WMS&field1=0
void httpGet(String ip, String path, int port)
{
int resp;
String atHttpGetCmd = "GET /"+path+" HTTP/1.0\r\n\r\n";
//AT+CIPSTART="TCP","192.168.20.200",80
String atTcpPortConnectCmd = "AT+CIPSTART=\"TCP\",\""+ip+"\","+port+"";
connect_wifi(atTcpPortConnectCmd,1000);
int len = atHttpGetCmd.length();
String atSendCmd = "AT+CIPSEND=";
atSendCmd+=len;
connect_wifi(atSendCmd,1000);
connect_wifi(atHttpGetCmd,1000);
}
void connect_wifi(String cmd, int t)
{
int temp=0,i=0;
while(1)
{
lcd.clear();
lcd.print(cmd);
Serial.println(cmd);
Serial1.println(cmd);
while(Serial1.available())
{
if(Serial1.find("OK"))
i=8;
}
delay(t);
if(i>5)
break;
i++;
}
if(i==8)
{
Serial.println("OK");
lcd.setCursor(0,1);
lcd.print("OK");
}
else
{
Serial.println("Error");
lcd.setCursor(0,1);
lcd.print("Error");
}
}code]
