hi all,
I have been trying to get the below code working with an analogue sensor connected to both A0 and A2 with no luck, I have tried various bits of code but nothing seems to allow them to read separately, could anyone help with this?
thank you in advance
#include "DHT.h"
#include <sd.h>
File myFile;
int pinCS = 10;
const int RED_PIN = 7;
const int BLUE_PIN = 8; .
const int GREEN_PIN = 9;
int DISPLAY_TIME = 10; // In milliseconds
int temt6000Pin = 0;
int airquality = 2;
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
void setup() {
pinMode(RED_PIN, OUTPUT);
pinMode(GREEN_PIN, OUTPUT);
pinMode(BLUE_PIN, OUTPUT);
Serial.begin(9600);
pinMode(pinCS, OUTPUT);
if (SD.begin())
{
Serial.println("SD card is ready to use.");
digitalWrite(BLUE_PIN, HIGH);
delay(500);
digitalWrite(BLUE_PIN, LOW);
delay(500);
digitalWrite(BLUE_PIN, HIGH);
delay(500);
digitalWrite(BLUE_PIN, LOW);
delay(500);
} else
{
Serial.println("SD card initialization failed");
digitalWrite(GREEN_PIN, HIGH);
delay(500);
digitalWrite(GREEN_PIN, LOW);
delay(500);
digitalWrite(GREEN_PIN, HIGH);
delay(500);
digitalWrite(GREEN_PIN, LOW);
delay(500);
return;
}
dht.begin();
}
void loop() {
delay(3000);
int value = analogRead(temt6000Pin);
Serial.print("Light is: ");
Serial.println(value);
int sensorValue = analogRead(A0);
Serial.print("Air Quality = ");
Serial.print(sensorValue);
Serial.println(" PPM ");
float h = dht.readHumidity();
float f = dht.readTemperature();
if (isnan(h)||isnan(f)) {
return;
}
myFile = SD.open("Logger.txt", FILE_WRITE);
if (myFile) {
Serial.print("Temperature: ");
Serial.print(f);
Serial.println(" *C ");
Serial.print("humidity: ");
Serial.print(h);
Serial.println(" % ");
myFile.print("Light level = ");
myFile.println(value);
myFile.print("Air Quality = ");
myFile.print(sensorValue);
myFile.println(" PPM ");
myFile.print("Temperature = ");
myFile.print(f);
myFile.println(" *C ");
myFile.print("humidity = ");
myFile.print(h);
myFile.println(" % ");
myFile.println("DONE");
myFile.println();
myFile.close();
Serial.println("Done.");
digitalWrite(RED_PIN, HIGH);
delay(1000);
digitalWrite(RED_PIN, LOW);
delay(1000);
}
else {
Serial.println("error opening Logger.txt");
}
}
