Lesson 28: DHT11 Temperature Sensor with TM1637 Display | Arduino Step by Step Course

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Part 3: Temperature Sensor

In this lesson we learn how to use DHT11 to measure temperature and display it on TM1637 LED display.


  /*
 * Robojax Arduino Step By Step Course 
  * Lesson 28 DHT11 with TM1637
 * This is the Arduino code for TM1637 4 digits display.
 *  * 
   Please watch video instruction here https://youtu.be/C-1iaCPzNtU
 This code is available at http://robojax.com/course1/?vid=lecture11
 
with over 100 lectures Free On  YouTube Watch it here http://robojax.com/L/?id=338
Get the code for the course: http://robojax.com/L/?id=339 


 * Date: Dec 06, 2017, in Ajax, Ontario, Canada
 
 * Original code from https://github.com/avishorp/TM1637
 * Modified for Robojax video on Dec 06, 2017

 */
#include <dht11.h>

dht11 DHT11; // create object of DHT11
#define dhtpin 2 // set the pin to connect to DHT11

 // start of settings of TM1637 LED display
#include <Arduino.h>
#include <TM1637Display.h>

// Module connection pins (Digital Pins)
#define CLK 2
#define DIO 3

TM1637Display display(CLK, DIO);
uint8_t blank[] = { 0x0, 0x0, 0x0, 0x0 };// blank value for all digits
 
// The amount of time (in milliseconds) between tests
#define TEST_DELAY   2000
// start of settings of TM1637 LED display



void setup()
{
	//Robojax Step By Step Arduono Course YouTube Watch it here http://robojax.com/L/?id=338
 Serial.begin(9600);// setting up serial monitor
   display.setBrightness(0x0f); 
   
}

void loop()
{
	//Robojax Step By Step Arduono Course YouTube Watch it here http://robojax.com/L/?id=338
DHT11.read(dhtpin);// initialize the reading
  int humidity = DHT11.humidity;// get humidity
//code for Robojax.com video
   Serial.print(getTemp('C'));
   Serial.print("C ");
   Serial.print(getTemp('F'));
   Serial.print("F ");
   Serial.print(getTemp('K'));
   Serial.print("K ");
   Serial.print(" humidity:");
   Serial.print (humidity);
   Serial.print("% ");
   Serial.println();
 delay(500);  


  display.setSegments(blank);
  display.showNumberDec(23, false, 2,1);
  delay(TEST_DELAY);
  
  display.setSegments(data);
  display.showNumberDec(153, false, 3, 1);
  delay(TEST_DELAY);

  display.setSegments(data);
  for(int i=0; i<=500; i++)
  {
    display.showNumberDec(i);
  }

}

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