Arduino Uno dual double LM35 and dht11 code beginers

Projects Programming
1

Hello everybody on this forum.
I'm complete newbie on programming arduino and need some help. I would like to connect 3 sensors (2xlm35 1xdht11) to arduino uno and display readings on lcd 16x4 via i2c adapter.

The script to read lm35 I use is:

#include <DHT11.h>
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
// Addr, En, Rw, Rs, d4, d5, d6, d7, backlighpin, polarity

float cel()
{
  int pin;
  float c;
  pin=analogRead(A1);
  c = (500.0 * pin)/1023;
  return(c);
}
 
 
void setup()
{
  lcd.begin(16,2);
  lcd.print("C=      ");
  
 
}
 
void loop()
{
  float Celciusze = cel();
  
  lcd.setCursor(2,0);
  lcd.print(Celciusze);
  delay(1000);
  
}

The script to read dht11 I use is:

#include <DHT11.h>
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
// Addr, En, Rw, Rs, d4, d5, d6, d7, backlighpin, polarity

int pin = A0;
DHT11 dht11(pin);

double Fahrenheit(double celsius) {
return ((double)(9 / 5) * celsius) + 32;
}

double Kelvin(double celsius) {
return celsius + 273.15;
}

void setup() {
lcd.begin(16, 2);
lcd.backlight();
lcd.clear();
lcd.print("Humidity & temp");
delay(3000);
lcd.clear();
lcd.print("Starting.....");
delay(3000);
}

void loop() {
int err;
float temp, humi;
if ((err = dht11.read(humi, temp)) == 0)
{
lcd.clear();
delay(500);
lcd.setCursor(0, 0);
lcd.print("Temp");
lcd.setCursor(0, 1);
lcd.print("Humidity");
lcd.setCursor(9, 0);
lcd.print(temp);
lcd.print(" C");
lcd.setCursor(9, 1);
lcd.print(humi);
lcd.print(" %");
delay(10000);
}
else
{
lcd.println();
lcd.print("Error No :");
lcd.print(err);
lcd.println();
}
}

Can someone help me to merge this two codes to read this 3 sensors at the same time?
Thanks in advance

2

This should get you close:

#include <dht.h>
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
// Addr, En, Rw, Rs, d4, d5, d6, d7, backlighpin, polarity

const int DHT11Pin = A0;
const int LM35APin = A1;
const int LM35BPin = A2;

DHT11 dht11(DHT11Pin);

double Fahrenheit(double celsius) {
  return ((double)(9 / 5) * celsius) + 32;
}

double Kelvin(double celsius) {
  return celsius + 273.15;
}

void setup() {
  lcd.begin(16, 2);
  lcd.backlight();
  lcd.clear();
  lcd.print("Humidity & temp");
  delay(3000);
  lcd.clear();
  lcd.print("Starting.....");
  delay(3000);
}

void loop() {
  int err;
  float temp1, humi;
  float CelciuszeA = cel(LM35APin);
  float CelciuszeB = cel(LM35BPin);

  if ((err = dht11.read(humi, temp)) == 0)
  {
    lcd.clear();
    delay(500);
    lcd.setCursor(0, 0);
    lcd.print("Temp");
    lcd.setCursor(0, 1);
    lcd.print("Humidity");
    lcd.setCursor(9, 0);
    lcd.print(temp1);
    lcd.print(" C");
    lcd.setCursor(9, 1);
    lcd.print(humi);
    lcd.print(" %");
    lcd.print(CelciuszeA);
    lcd.print(CelciuszeB);
    delay(10000);
  }
  else
  {
    lcd.println();
    lcd.print("Error No :");
    lcd.print(err);
    lcd.println();
  }
}

float cel(const int pin) {
  int value = analogRead(pin);
  float c = (500.0 * value) / 1023;
  return c;
}