DS3231 Code - Clarification

[VINODkumar3401]

Please clarify one of my doubt.I am not an expert in programming.
DS3231 with 16 x 2 LCD display I made. The clock showing min and seconds in single digit. I want it to be in two digit format. Can anybody help me to solve the issue ?
The code I am used is as follows

#include <LiquidCrystal.h>
#include <Wire.h>
#include "RTClib.h"
RTC_DS3231 rtc;
char daysOfTheWeek[7][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
int Day;
int Month;
int Year;
int Secs;
int Minutes;
int Hours;
String dofweek; // day of week
String myDate;
String myTime;

// for the 16x2 LCD

#define rs 9
#define en 8
#define d4 7
#define d5 6
#define d6 5
#define d7 4
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup ()
{
Serial.begin(9600);
lcd.begin(16, 2);
delay(3000); // wait for console opening

if (! rtc.begin()) {
Serial.println("Couldn't find RTC");
while (1);
}

if (rtc.lostPower()) {
Serial.println("RTC lost power, lets set the time!");

// Comment out below lines once you set the date & time.
// Following line sets the RTC to the date & time this sketch was compiled
rtc.adjust(DateTime(F(DATE), F(TIME)));

// Following line sets the RTC with an explicit date & time
// for example to set January 27 2017 at 12:56 you would call:
// rtc.adjust(DateTime(2017, 1, 27, 12, 56, 0));

}
}

void loop ()
{
DateTime now = rtc.now();
lcd.clear();
Day = now.day();
Month = now.month();
Year = now.year();
Secs = now.second();
Hours = now.hour();
Minutes = now.minute();
dofweek = daysOfTheWeek[now.dayOfTheWeek()];

myDate = myDate +dofweek+ " "+ Day + "/" + Month + "/" + Year ;
myTime = myTime + Hours +":"+ Minutes +":" + Secs ;
// send to serial monitor
Serial.println(dofweek);
Serial.println(myDate);
Serial.println(myTime);
//Print on lcd
lcd.setCursor(0,0);
lcd.print(myDate);
lcd.setCursor(0,1);
lcd.print(myTime);
myDate = "";
myTime = "";
delay(1000);
}

My display of time is attaching

Regards

VINOD, India

[sterretje]

Please edit your post, select all code and click the </> button to apply code tags. Next save your post.

Please read How to get the best out of this forum.

Further posting in bold is considered shouting and impolite.

To give you the idea how to print leading zeroes, below is one solution; it does not combine all elements first into a String. Example only for seconds, you should be able to do the rest.

if (Secs < 10)
{
  lcd.print(0);
}
lcd.print(Secs);

// edit
Stupid autocorrect and fat fingers
Mistakes corrected.

[VINODkumar3401]

On Thu, 08 Jul 2021 18:27:23 +0530 sterretjeToo via Arduino Forum

[blh64]

@sterretje

  lcd.print(0);

  lcd.print("0");

[david_2018]

For a single character single quotes will use slightly less memory

lcd.print('0');