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
wassalam
SIMOR
