I'm using 4 sensors(DHT11,MQ135,YL69,LDR) with arduino, I'm able to get the values on debug screen in json string, while creating csv, i'm getting only DHT11 values (humidity & temperature) other values are coming as
11/12/2018;11:01:16 AM;66;25;undefined;undefined;undefined
Here is the code for creating csv
var date = new Date (). toLocaleDateString ();
var time = new Date (). toLocaleTimeString ();
var output = date + ";" + time + ";" + msg.payload.Humidity + ";" + msg.payload.Temperature + ";" + msg.payload.AnalogValue + ";" + msg.payload.moisture + ";" + msg.payload.Airquality;
msg.payload = output;
return msg
Arduino code
#include "dht.h"
#define dht_apin A0 // Analog Pin sensor is connected to
dht DHT;
void setup(){
Serial.begin(115200);
delay(500);//Delay to let system boot
//Serial.println("DHT11 Humidity & temperature Sensor\n\n");
delay(5000);//Wait before accessing Sensor
}//end "setup()"
void loop(){
//Start of Program
DHT.read11(dht_apin);
unsigned int AnalogValue;
AnalogValue = analogRead(A1);
int moisture = analogRead(A2);
int Airquality = analogRead(A3);
//Serial.print("humidity = ");
//Serial.print(DHT.humidity);
//Serial.print("% ");
//Serial.print("temperature = ");
//Serial.print(DHT.temperature);
//Serial.println("C ");
Serial.print ("{\"Temperature\":");
Serial.print(DHT.temperature);
Serial.print (",");
Serial.print ("\"Humidity\":");
Serial.print(DHT.humidity);
Serial.print (",");
Serial.print ("\"Moisture\":");
Serial.print(moisture);
Serial.print (",");
Serial.print ("\"AirQuality\":");
Serial.print(Airquality);
Serial.print (",");
Serial.print ("\"EC\":");
Serial.print(AnalogValue);
Serial.println ("}");
delay(5000);//Wait 5 seconds before accessing sensor again.
//Fastest should be once every two seconds.
}// end loop()