SD Card Recording Data Issue

Hello everybody, I hope everything is well on your behalf,

So I am currently trying to record data in an SD card for 4 environmental sensors. I succesfully manage to record the data in just 1 environmental sensor which is the DHT11 for humidity and temperature, but when I try to record it along with turbidity, pH, and conductivity, it does not work at all. I do not know if this is a memory problem exactly or it is just it can’t record data from 4 different sensors at a time, I will upload my codes below:

The one that succesfully records data from the DHT sensor:

#include <Arduino.h>
#include <DHT.h>
#include <math.h>
#include <SD.h>
#include <SPI.h>

#define DHTPIN 10
#define DHTTYPE DHT11
#define SD_SS_PIN 12
#define FILE_NAME “DHT.txt”
#define LOGGERNAME “Mayfly microSD Card Tester”
DHT dht(DHTPIN,DHTTYPE);
int pin12 = 12;
File SensorDHT;

void setup()
{
pinMode(22,OUTPUT);
pinMode(pin12,OUTPUT);
digitalWrite(22,HIGH);
delay(200);
Serial.begin(9600);
Serial.println(“”);
Serial.println(“Digital Humidity/Temperature”);
Serial.println(“”);
dht.begin();
if (SD.begin(SD_SS_PIN)) {
Serial.println(“SD card activated”);
}
else
{
Serial.println(“SD card activation failed. Turning off”);
return 0;
}
}

void loop()
{
float h = dht.readHumidity();
float t = dht.readTemperature();
SensorDHT= SD.open(FILE_NAME,FILE_WRITE);

if (isnan(t) || isnan(h))
{
SensorDHT.println(“Failed to read from DHT”);
Serial.println(“Failed to read from DHT”);
}
else
{
SensorDHT.println(“Humidity: “);
SensorDHT.print(h);
SensorDHT.print(” %”);
SensorDHT.println(“”);
SensorDHT.println(“Temperature “);
SensorDHT.print(“”);
SensorDHT.print(t);
SensorDHT.print(” *C”);
SensorDHT.println(“”);
SensorDHT.close();
Serial.println(“Humidity: “);
Serial.print(h);
Serial.print(” %”);
Serial.println(“”);
Serial.println(“Temperature “);
Serial.print(“”);
Serial.print(t);
Serial.print(” *C”);
Serial.println(“”);

}
delay(1000);

}

Now if you ask why I have serial.print and the other print code is just because I want to see the data on the serial monitor, I think there may be better ways to do it, if you can share it would be awesome. With my current knowledge this is the only way I found to make it work.

The code that does not work:

#include <Arduino.h>
#include <DHT.h>
#include <math.h>
#include <SD.h>
#include <SdFat.h>
#include <SPI.h>
#define DHTPIN 10
#define DHTTYPE DHT11
#define SD_SS_PIN 12
#define FILE_NAME “EnviroSensors.txt”
#define LOGGERNAME “Mayfly microSD Card Tester”
File sensorsdata;
float voltage1;
float voltage2;
float turbidity;
float Readingpin;
float phValue;
float pHVol;
const int analogInPin = A0;
int sensorValue = 0;
unsigned long int avgValue;
float b;
int buf[10],temp;
int PinSD = 12;
int PinTurbidity = A1;
int PinConductivity = A2;

DHT dht(DHTPIN,DHTTYPE);

void setup()
{

pinMode(22,OUTPUT);
pinMode(PinSD,OUTPUT);
digitalWrite(22,HIGH);
Serial.begin(9600);
Serial.println(“”);
if (SD.begin(SD_SS_PIN))
{
Serial.println(“SD Card Reading Activated”);
}
else
{
Serial.println(“SD Card Reading Failed, turning off the program”);
return 0;
}
dht.begin();
}

void loop()
{
sensorsdata = SD.open(FILE_NAME,FILE_WRITE);

float h = dht.readHumidity();
float t = dht.readTemperature();

voltage1 = 0.00488*analogRead(PinTurbidity); //in V
turbidity = -1120.4*voltage1*voltage1 + 5742.3*voltage1 – 4352.8; //in NTU
voltage2 = (analogRead(PinConductivity))*(5.0/1023);
for(int i=0;i<10;i++)
{
buf[i]=analogRead(analogInPin);
delay(10);
}
for(int i=0;i<9;i++)
{
for(int j=i+1;j<10;j++)
{
if(buf[i]>buf[j])
{
temp=buf[i];
buf[i]=buf[j];
buf[j]=temp;
}
}
}
avgValue=0;
for(int i=2;i<8;i++)
{
avgValue+=buf[i];
pHVol=(float)avgValue*3.3/1023/6;
phValue = -5.70 * pHVol + 19.95;
}
if (isnan(t) || isnan(h))
{
sensorsdata.println(“Failed to read from DHT”);
}
else
{
sensorsdata.println(“Humidity: Temperature: “);
sensorsdata.println(“[” + String(h) + “] %”+” [“+String(t)+”] *C” );
}
sensorsdata.println(“”);
sensorsdata.println(“Turbidity: Conductivity: “);
sensorsdata.println(“[“+String(turbidity)+”] NTU [“+String(voltage2)+”]” );
sensorsdata.println(“”);
sensorsdata.println(“pH”);
sensorsdata.println(“[“+String(phValue)+”]” );
sensorsdata.println(“”);
sensorsdata.close();
delay(1000);
}
The code itself works to display the data in the serial monitor, but it does not works when recording it into the SD card. If you ask why am I using a strange space order in the print lines it is just to make it look pretty. One more thing, the platform I am using is platformIO with Atom. I am not using the Arduino IDE for this. And something happens with the serial monitor, it has been acting weird recently and it does not displays everything. I use the PIO monitor instead to observe the print lines. It works like it should with the PIO monitor. I hope to hear from anybody soon!