cara membuat tampilan RTC di aplikasi Blynk tanpa hardware tambahan

assalamualaikum,

morning sobat, pagi ini saya akan share cara membuat tampilan waktu di blynk tanpa tambahan komponen di hardware. cukup syncron dengan server blynk.

langsung aja.
1. buka example -  blynk - widget - rtc
/*************************************************************
  Download latest Blynk library here:
    https://github.com/blynkkk/blynk-library/releases/latest

  Blynk is a platform with iOS and Android apps to control
  Arduino, Raspberry Pi and the likes over the Internet.
  You can easily build graphic interfaces for all your
  projects by simply dragging and dropping widgets.

    Downloads, docs, tutorials: http://www.blynk.cc
    Sketch generator:           http://examples.blynk.cc
    Blynk community:            http://community.blynk.cc
    Follow us:                  http://www.fb.com/blynkapp
                                http://twitter.com/blynk_app

  Blynk library is licensed under MIT license
  This example code is in public domain.

 *************************************************************

  Blynk can provide your device with time data, like an RTC.
  Please note that the accuracy of this method is up to several seconds.

  App project setup:
    RTC widget (no pin required)
    Value Display widget on V1
    Value Display widget on V2

  WARNING :
  For this example you'll need Time keeping library:
    https://github.com/PaulStoffregen/Time

  This code is based on an example from the Time library:
    https://github.com/PaulStoffregen/Time/blob/master/examples/TimeSerial/TimeSerial.ino
 *************************************************************/

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>
#include <TimeLib.h>
#include <WidgetRTC.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "YourAuthToken";

BlynkTimer timer;

WidgetRTC rtc;

// Digital clock display of the time
void clockDisplay()
{
  // You can call hour(), minute(), ... at any time
  // Please see Time library examples for details

  String currentTime = String(hour()) + ":" + minute() + ":" + second();
  String currentDate = String(day()) + " " + month() + " " + year();
  Serial.print("Current time: ");
  Serial.print(currentTime);
  Serial.print(" ");
  Serial.print(currentDate);
  Serial.println();

  // Send time to the App
  Blynk.virtualWrite(V1, currentTime);
  // Send date to the App
  Blynk.virtualWrite(V2, currentDate);
}

BLYNK_CONNECTED() {
  // Synchronize time on connection
  rtc.begin();
}

void setup()
{
  // Debug console
  Serial.begin(9600);

  Blynk.begin(auth);

  // Other Time library functions can be used, like:
  //   timeStatus(), setSyncInterval(interval)...
  // Read more: http://www.pjrc.com/teensy/td_libs_Time.html

  setSyncInterval(10 * 60); // Sync interval in seconds (10 minutes)

  // Display digital clock every 10 seconds
  timer.setInterval(10000L, clockDisplay);
}

void loop()
{
  Blynk.run();
  timer.run();
}

2. upload to arduino
3. buka aplikasi blynk di smartphone
4. open project
5. add widget rtc

6. add widget value 2x, set V1 sebagai time dan V2 sebagai date

7. setting widget

8. play your project blynk



wassalam

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