Multi-function-measurement/Code Arduino at main · Mdtr3002/Multi-function-measurement · GitHub

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#include <SoftwareSerial.h>
#include <DHT.h>
#include <MQ135.h>
#include <SharpGP2Y10.h>
SoftwareSerial nodemcu(2,3);//tx-2, rx-3
#define DHTPIN 4
DHT dht(DHTPIN, DHT11);
#define PIN_MQ135 A0
MQ135 mq135_sensor = MQ135(PIN_MQ135);
int voPin = A1;
int ledPin = 5;
float dustDensity = 0;
SharpGP2Y10 dustSensor(voPin, ledPin);
int UVOUT = A2;
int REF_3V3 = A3;
const int trig = 6;
const int echo = 7;
void setup()
{
Serial.begin(9600);
nodemcu.begin(9600);
dht.begin();
pinMode(UVOUT, INPUT);
pinMode(REF_3V3, INPUT);
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
}
void loop()
{
     unsigned long duration;
     int distance;
     digitalWrite(trig, 0);
     delayMicroseconds(2);
     digitalWrite(trig, 1);
     delayMicroseconds(5);
     digitalWrite(trig, 0);
     duration = pulseIn(echo, HIGH);
     distance = int(duration/2/29.412);
     if (distance == 0)
     return;
     int a = 50 - distance;
     float h = dht.readHumidity();
     float t = dht.readTemperature();
     if (isnan(h) || isnan(t))
     return;
     float rzero = mq135_sensor.getRZero();
     float correctedRZero = mq135_sensor.getCorrectedRZero(t, h);
     float resistance = mq135_sensor.getResistance();
     float ppm = mq135_sensor.getPPM();
     float correctedPPM = mq135_sensor.getCorrectedPPM(t, h);
     dustDensity = dustSensor.getDustDensity();
     int uvLevel = averageAnalogRead(UVOUT);
     int refLevel = averageAnalogRead(REF_3V3);
     float outputVoltage = 3.3 / refLevel * uvLevel;
     float uvIntensity = mapfloat(outputVoltage, 0.99, 2.8, 0.0, 15.0);
     nodemcu.write(h);
     nodemcu.write(t);
     nodemcu.write(correctedPPM);
     nodemcu.write(uvIntensity);
     nodemcu.write(dustDensity);
     nodemcu.write(a);
     Serial.print("Temperature: ");
     Serial.print(t);
     Serial.println("*C");
     Serial.print("Humidity: ");
     Serial.print(h);
     Serial.println("%");
     Serial.print("Concentration of Dust: ");
     Serial.print(dustDensity);
     Serial.println("mg/m^3");
     Serial.print("UV Ray Intensity: ");
     Serial.print(uvIntensity);
     Serial.println("mW/cm^2");
     Serial.print("Air Quality: ");
     Serial.print(correctedPPM);
     Serial.println("ppm");
     Serial.print("Sea Level Rise: ");
     Serial.print(a);
     Serial.println("cm");
     delay(15000);
}
  int averageAnalogRead(int pinToRead)
{
  byte numberOfReadings = 8;
  unsigned int runningValue = 0;
  for(int x = 0 ; x < numberOfReadings ; x++)
  runningValue += analogRead(pinToRead);
  runningValue /= numberOfReadings;
  return(runningValue);
}
float mapfloat(float x, float in_min, float in_max, float out_min, float out_max)
{
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}