Noobie to arduino need help with incubator project

Hey all

trying to get pid working in this using dht22 but cant get it to work any input heres my code

// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain

#include "DHT.h"
#include <PID_v1.h>

#define DHTPIN 12     // what pin we're connected to

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11   // DHT 11
#define DHTTYPE DHT22   // DHT 22  (AM2302)
//#define DHTTYPE DHT21   // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

// Initialize DHT sensor for normal 16mhz Arduino
DHT dht(DHTPIN, DHTTYPE);
// NOTE: For working with a faster chip, like an Arduino Due or Teensy, you
// might need to increase the threshold for cycle counts considered a 1 or 0.
// You can do this by passing a 3rd parameter for this threshold.  It's a bit
// of fiddling to find the right value, but in general the faster the CPU the
// higher the value.  The default for a 16mhz AVR is a value of 6.  For an
// Arduino Due that runs at 84mhz a value of 30 works.
// Example to initialize DHT sensor for Arduino Due:
//DHT dht(DHTPIN, DHTTYPE, 30);

int heater = 3;

//Define Variables we'll be connecting to
double Setpoint, Input, Output,t;

//Specify the links and initial tuning parameters
PID myPID(&Input, &Output, &Setpoint,2,3,0, DIRECT);

void setup() {
  Serial.begin(9600);
  Serial.println("DHTxx test!");

  dht.begin();
// from here is heater control.
   pinMode (heater, OUTPUT);
  
    //initialize the variables we're linked to
  Input = t;
  Setpoint = 24.0;

  //turn the PID on
  myPID.SetMode(AUTOMATIC);

  
}

void loop() {
 
// Wait a few seconds between measurements.
  delay(2000);

  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit
  float f = dht.readTemperature(true);
 
  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Compute heat index
  // Must send in temp in Fahrenheit!
  float hi = dht.computeHeatIndex(f, h);

  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print(" *C ");
  Serial.print(f);
  Serial.print(" *F\t");
  Serial.print("Heat index: ");
  Serial.print(hi);
  Serial.println(" *F");
 
//from here is heater control.
//analogWrite(heater, 100);

//if (t <= 31)
//     {analogWrite(heater, 254);}
     
//else if (t >= 33)
         // {analogWrite(heater, 20);}
         
//else {analogWrite(heater, 100);}
     
   
  myPID.Compute();
  analogWrite(heater,Output); 
 
}

But there is no egg tray turning option.......................electric motor rocks the eggs 4 times a day (24h) backwards and forwards..................any code?

But there is no egg tray turning option.......................electric motor rocks the eggs 4 times a day (24h) backwards and forwards..................any code?