luni, 29 septembrie 2014

Ceas RTC cu DS1307 si date mediu cu DHT11 pe afisaj alfanumeric LCD1602 folosind Arduino

actualizat poze in 11.08.2015

    In articolul Ceas de timp real (RTC) cu DS1307 si Arduino (partea a 2-a) am folosit modulul RTC (ceas de timp real), ulterior, si senzorul de temperatura si umiditate DHT11, cu un afisaj alfanumeric cu 16 coloane si 2 randuri (LCD1602) conectat la placa Arduino prin intermediul unei  interfete i2c, de data asta am conectat afisajul clasic, dupa cum se vede in schema de mai jos:
   Am avut la indemana 3 afisaje alfanumerice:
 
 
   Sketch-ul folosit este adaptarea celui din articolul mentionat anterior, schimband partea de interfata i2c cu conectarea clasica a afisajului, dar pentru cei incepatori, il postez si pe acesta:
// Date and time functions using a DS1307 RTC 
// original sketck from http://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/
// add part with SQW=1Hz from http://tronixstuff.wordpress.com/ & http://www.bristolwatch.com/arduino/arduino_ds1307.htm

// adapted sketch by niq_ro from http://nicuflorica.blogspot.ro/
// original article from http://nicuflorica.blogspot.ro/2013/06/ceas-de-timp-real-rtc-cu-ds1307-si.html

#include <Wire.h>
#include "RTClib.h"

// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

RTC_DS1307 RTC;

void setup () {
  // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // Print a logo message to the LCD.
  lcd.print("www.tehnic.go.ro");  
  lcd.setCursor(0, 1);
  lcd.print("creat de niq_ro");
  delay (2500);
  lcd.clear();
    
   // Serial.begin(9600);
    Wire.begin();
  
// part code from http://tronixstuff.wordpress.com/
Wire.beginTransmission(0x68);
Wire.write(0x07); // move pointer to SQW address
Wire.write(0x10); // sends 0x10 (hex) 00010000 (binary) to control register - turns on square wave
Wire.endTransmission();
// end part code from http://tronixstuff.wordpress.com/

    RTC.begin();
  if (! RTC.isrunning()) {
    //Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }
}

void loop () {
   DateTime now = RTC.now();
   lcd.setCursor(4, 0);
   if ( now.hour() < 10)
   {
     lcd.print(" "); 
     lcd.print(now.hour(), DEC);
   }
   else
   {
   lcd.print(now.hour(), DEC);
   }
   lcd.print(":");
   if ( now.minute() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.minute(), DEC);
   }
   else
   {
   lcd.print(now.minute(), DEC);
   }
   lcd.print(":");
   if ( now.second() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.second(), DEC);
   }
   else
   {
   lcd.print(now.second(), DEC);
   }
     lcd.print(" "); 
    
   lcd.setCursor(3, 1);
    if ( now.day() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.day(), DEC);
   }
   else
   {
   lcd.print(now.day(), DEC);
   }
   lcd.print("/");
   if ( now.month() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.month(), DEC);
   }
   else
   {
   lcd.print(now.month(), DEC);
   }
   lcd.print("/");
   lcd.print(now.year(), DEC);
   lcd.print(" "); 
  
   delay(1000);
}
   Dupa asta, am conectat si modulul cu senzorul DHT11, care poate furniza date despre temperatura cu eroare de +20C, iar despre umiditate cu eroare de +5 unitati.
   Schema de conectare devine:
   Sketch-ul adaptat devine:
// Date and time functions using a DS1307 RTC 
// original sketck from http://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/
// add part with SQW=1Hz from http://tronixstuff.wordpress.com & http://www.bristolwatch.com/arduino/arduino_ds1307.htm

// adapted sketch by niq_ro from http://nicuflorica.blogspot.ro/ 
// original article from http://nicuflorica.blogspot.ro/2013/06/ceas-de-timp-real-rtc-cu-ds1307-si.html

#include <Wire.h>
#include "RTClib.h"

// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

RTC_DS1307 RTC;

#include <DHT.h>
#define DHTPIN A2     // what pin we're connected DHT11
#define DHTTYPE DHT11   // DHT 11 
DHT dht(DHTPIN, DHTTYPE);

void setup () {
  // DHT init
  dht.begin();
  // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // Print a logo message to the LCD.
  lcd.print("www.tehnic.go.ro");  
  lcd.setCursor(0, 1);
  lcd.print("creat de niq_ro");
  delay (2500);
  lcd.clear();
    
   // Serial.begin(9600);
    Wire.begin();
  
// part code from http://tronixstuff.wordpress.com/
Wire.beginTransmission(0x68);
Wire.write(0x07); // move pointer to SQW address
Wire.write(0x10); // sends 0x10 (hex) 00010000 (binary) to control register - turns on square wave
Wire.endTransmission();
// end part code from http://tronixstuff.wordpress.com/

    RTC.begin();
  if (! RTC.isrunning()) {
    //Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }
}

void loop () {
   DateTime now = RTC.now();
  int h = dht.readHumidity();
  int t = dht.readTemperature();

   lcd.setCursor(1, 0);
   if ( now.hour() < 10)
   {
     lcd.print(" "); 
     lcd.print(now.hour(), DEC);
   }
   else
   {
   lcd.print(now.hour(), DEC);
   }
   lcd.print(":");
   if ( now.minute() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.minute(), DEC);
   }
   else
   {
   lcd.print(now.minute(), DEC);
   }
   lcd.print(":");
   if ( now.second() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.second(), DEC);
   }
   else
   {
   lcd.print(now.second(), DEC);
   }
     lcd.print(" "); 
 
  lcd.setCursor(11, 0);
  // lcd.print("t=");
    if ( t < 10)
   {
     lcd.print(" "); 
     lcd.print(t);
   }
   else
   {
   lcd.print(t);
   }
   lcd.write(0b11011111);
   lcd.print("C");
    
   lcd.setCursor(0, 1);
    if ( now.day() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.day(), DEC);
   }
   else
   {
   lcd.print(now.day(), DEC);
   }
   lcd.print("/");
   if ( now.month() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.month(), DEC);
   }
   else
   {
   lcd.print(now.month(), DEC);
   }
   lcd.print("/");
   lcd.print(now.year(), DEC);
   lcd.print(" "); 
  
   lcd.setCursor(11, 1);
  // lcd.print("H=");
   lcd.print(h);
   lcd.print("%RH");
   
   delay(1000);
}
   Pe ecran informatia este afisata astfel:
   Am facut 2 filmulete de prezentare a montajului:
- ceas RTC cu date meteo oferite de DHT11 pe afisaj LCD1602 folosind Arduino
- date and hour with RTC DS1307, temperature and humidity with DHT11 on LCD1602 with Arduino
   La sugestia lui Janios, un cititor al blogului, am eliminat partea de data, pastrand doar ora si temperatura si umiditatea oferite de senzorul DHT11.
   M-am gandit ca acum pot pune partea de reglaj al orei din butoane, cum am facut si la ceasul cu afisaje LCD cu 7 sesegmente multiplexate, care l-am prezentat in articolul Afisaje LED cu 7 segmente si.. Arduino (IV), asa ca schema devine:
   Dupa cum se observa, am mutat senzorul DHT11 pe pinul D8, iar tastele pentru intrarea in modul de reglaj, de schimare ore si munute sunt pe partea de senzori analogici, pe post de intrari digitale.
 
   Modul de conectare poate fi diferit de al meu, dar trebuie definite in sketch: 
// Date and time functions using a DS1307 RTC 
// original sketck from http://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/
// add part with SQW=1Hz from http://tronixstuff.wordpress.com/ & http://www.bristolwatch.com/arduino/arduino_ds1307.htm

// adapted sketch by niq_ro from http://nicuflorica.blogspot.ro/
// original article from http://nicuflorica.blogspot.ro/2013/06/ceas-de-timp-real-rtc-cu-ds1307-si.html

#include <Wire.h>
#include "RTClib.h"

// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

/*                                    -------------------
                                      |  LCD  | Arduino |
                                      -------------------
 LCD RS pin to digital pin 7          |  RS   |   D7    |
 LCD Enable pin to digital pin 6      |  E    |   D6    |
 LCD D4 pin to digital pin 5          |  D4   |   D6    |
 LCD D5 pin to digital pin 4          |  D5   |   D4    |
 LCD D6 pin to digital pin 3          |  D6   |   D3    |
 LCD D7 pin to digital pin 2          |  D7   |   D2    |
 LCD R/W pin to ground                |  R/W  |   GND   |
                                      -------------------
*/

RTC_DS1307 RTC;

#include <DHT.h>
#define DHTPIN 8     // what pin we're connected DHT11
#define DHTTYPE DHT11   // DHT 11 
DHT dht(DHTPIN, DHTTYPE);

byte SW0 = A0;
byte SW1 = A1;
byte SW2 = A2;

// use for hexa in zecimal conversion
int zh, uh, ore;
int zm, um, miniti;


void setup () {
  // DHT init
  dht.begin();
  // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // Print a logo message to the LCD.
  lcd.print("www.tehnic.go.ro");  
  lcd.setCursor(0, 1);
  lcd.print("creat de niq_ro");
  delay (2500);
  lcd.clear();
    
   // Serial.begin(9600);
    Wire.begin();
  
// part code from http://tronixstuff.wordpress.com/
Wire.beginTransmission(0x68);
Wire.write(0x07); // move pointer to SQW address
Wire.write(0x10); // sends 0x10 (hex) 00010000 (binary) to control register - turns on square wave
Wire.endTransmission();
// end part code from http://tronixstuff.wordpress.com/

    RTC.begin();
  if (! RTC.isrunning()) {
    //Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }

 pinMode(SW0, INPUT);  // for this use a slide switch
  pinMode(SW1, INPUT);  // N.O. push button switch
  pinMode(SW2, INPUT);  // N.O. push button switch

  digitalWrite(SW0, HIGH); // pull-ups on
  digitalWrite(SW1, HIGH);
  digitalWrite(SW2, HIGH);

}

void loop () {
   DateTime now = RTC.now();
  int h = dht.readHumidity();
  int t = dht.readTemperature();

   lcd.setCursor(4, 0);
   if ( now.hour() < 10)
   {
     lcd.print(" "); 
     lcd.print(now.hour(), DEC);
   }
   else
   {
   lcd.print(now.hour(), DEC);
   }
   lcd.print(":");
   if ( now.minute() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.minute(), DEC);
   }
   else
   {
   lcd.print(now.minute(), DEC);
   }
   lcd.print(":");
   if ( now.second() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.second(), DEC);
   }
   else
   {
   lcd.print(now.second(), DEC);
   }
     lcd.print(" "); 
 
  lcd.setCursor(1, 1);
  // lcd.print("t=");
    if ( t < 10)
   {
     lcd.print(" "); 
     lcd.print(t);
   }
   else
   {
   lcd.print(t);
   }
   //lcd.print(",0");
   lcd.write(0b11011111);
   lcd.print("C");
    
/*   lcd.setCursor(0, 1);
    if ( now.day() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.day(), DEC);
   }
   else
   {
   lcd.print(now.day(), DEC);
   }
   lcd.print("/");
   if ( now.month() < 10)
   {
     lcd.print("0"); 
     lcd.print(now.month(), DEC);
   }
   else
   {
   lcd.print(now.month(), DEC);
   }
   lcd.print("/");
   lcd.print(now.year(), DEC);
   lcd.print(" "); 
*/  
   lcd.setCursor(10, 1);
  // lcd.print("H=");
   lcd.print(h);
   lcd.print("%RH");
 
   if (!(digitalRead(SW0))) set_time(); // hold the switch to set time

 
   delay(500);
}

void set_time()   {
  byte minutes1 = 0;
  byte hours1 = 0;
  byte minutes = 0;
  byte hours = 0;

  while (!digitalRead(SW0))  // set time switch must be released to exit
  {
    minutes1=minutes;
    hours1=hours;
    
     
    while (!digitalRead(SW1)) // set minutes
    { 
     minutes++;  
   // converting hexa in zecimal:
    zh = hours / 16;
    uh = hours - 16 * zh ;
    ore = 10 * zh + uh; 
    zm = minutes / 16;
    um = minutes - 16 * zm ;
    miniti = 10 * zm + um; 
  
  /*  
     for(int i = 20 ; i >0  ; i--) {
     displayNumber01(ore*100+miniti); 
     }
   */
   lcd.setCursor(4, 0);
   if ( ore < 10)
   {
     lcd.print(" "); 
     lcd.print(ore);
   }
   else
   {
   lcd.print(ore);
   }
   lcd.print(":");
   if ( miniti < 10)
   {
     lcd.print("0"); 
     lcd.print(miniti);
   }
   else
   {
   lcd.print(miniti);
   }
   lcd.print(":");
   lcd.print("00"); 
      
      if ((minutes & 0x0f) > 9) minutes = minutes + 6;
      if (minutes > 0x59) minutes = 0;
      Serial.print("Minutes = ");
      if (minutes >= 9) Serial.print("0");
      Serial.println(minutes, HEX);
    delay(150);    
    }

    while (!digitalRead(SW2)) // set hours
    { 
     hours++;          
     
   // converting hexa in zecimal:
    zh = hours / 16;
    uh = hours - 16 * zh ;
    ore = 10 * zh + uh; 
    zm = minutes / 16;
    um = minutes - 16 * zm ;
    miniti = 10 * zm + um; 
    
   /*
     for(int i = 20 ; i >0  ; i--) {
     displayNumber01(ore*100+miniti); 
     }
   */
   lcd.setCursor(4, 0);
   if ( ore < 10)
   {
     lcd.print(" "); 
     lcd.print(ore);
   }
   else
   {
   lcd.print(ore);
   }
   lcd.print(":");
   if ( miniti < 10)
   {
     lcd.print("0"); 
     lcd.print(miniti);
   }
   else
   {
   lcd.print(miniti);
   }
   lcd.print(":");
   lcd.print("00");
      
      if ((hours & 0x0f) > 9) hours =  hours + 6;
      if (hours > 0x23) hours = 0;
      Serial.print("Hours = ");
      if (hours <= 9) Serial.print("0");
      Serial.println(hours, HEX);
    delay(150);
    }

    Wire.beginTransmission(0x68); // activate DS1307
    Wire.write(0); // where to begin
    Wire.write(0x00);          //seconds
    Wire.write(minutes);          //minutes
    Wire.write(0x80 | hours);    //hours (24hr time)
    Wire.write(0x06);  // Day 01-07
    Wire.write(0x01);  // Date 0-31
    Wire.write(0x05);  // month 0-12
    Wire.write(0x09);  // Year 00-99
    Wire.write(0x10); // Control 0x10 produces a 1 HZ square wave on pin 7. 
    Wire.endTransmission();
  
    // converting hexa in zecimal:
    zh = hours / 16;
    uh = hours - 16 * zh ;
    ore = 10 * zh + uh; 
    zm = minutes / 16;
    um = minutes - 16 * zm ;
    miniti = 10 * zm + um; 
    
   /*  for(int i = 20 ; i >0  ; i--) {
     displayNumber01(ore*100+miniti); 
     }
 //  delay(150);
    */

   lcd.setCursor(4, 0);
   if ( ore < 10)
   {
     lcd.print(" "); 
     lcd.print(ore);
   }
   else
   {
   lcd.print(ore);
   }
   lcd.print(":");
   if ( miniti < 10)
   {
     lcd.print("0"); 
     lcd.print(miniti);
   }
   else
   {
   lcd.print(miniti);
   }
   lcd.print(":");
   lcd.print("00");
}



}
   Am facut 2 filmulete, care prezinta modul de functionare si reglaj: - ceas RTC si date meteo cu Arduino pe afisaj LCD1602, reglaj manual al orei si minutelor
- weather & manual adjust for RTC clock with Arduino and LCD1602 display
   Tot la sugestia lui Janos, voi schimba senzorul DHT11 cu unul DHT22, datorita preciziei mai mari (+0,50C si +2 unitati umiditate), dar trebuie sa imi soseasca de peste mari si tari, si abia atunci, o sa fac si modificarea asta.
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