Arduino uno servo alarm with DS3231 RTC

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1

I am a beginner, and I'm getting really frustrated with my project. I have done so much research but there is nothing that I could find to figure this out. My goal is to have my servo move at a specific time of day (say 5:00am). But for the life of me I can't get my program to get the time from the RTC and use it to activate my servo program. How do I write a program to run my servo when 5:00am rolls around?

2

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3

I can print the time, and I can move the servo, the problem lies in connecting the two. The RTC is the DS3231.

This is what I have so far.

#include <Servo.h>
#include <TimeLib.h>
#include <TimeAlarms.h>
#include <Servo.h>
#include <DS3231.h>
#include <Time.h>
#include <Wire.h>
Time  t;
DS3231 rtc(SDA, SCL);

Servo myservo;


int pos = 0;
int tempc;
int tempF;
 


uint32_t syncProvider();

  void setup() 
{
  Serial.begin(115200);
  rtc.begin();
  Alarm.delay(1000);
  Alarm.alarmRepeat(13, 07, 00, MorningAlarm);
  // attachInterrupt(1, MorningAlarm, FALLING);
    
  tempc = rtc.getTemp();
  tempF = (tempc * 1.8) + 32.0;
  myservo.attach(4);
 }

void MorningAlarm (){
  
    Serial.print("hi dad");
    
    for (pos = 57; pos <= 92; pos += 1) {
    myservo.write(pos);              
    delay(20);
  }
    for (pos = 92; pos >= 57; pos -= 1) { 
    myservo.write(pos);              
    delay(20); 
    Serial.print("Success");
  }
}

   void loop(){
    t = rtc.getTime();
    // suggest getting time from Arduino here
    Serial.print(t.hour,DEC);
    Serial.print(":");
    Serial.print(t.min,DEC);
    Serial.print(":");
    Serial.print(t.sec,DEC);
    Serial.print("  Temperature:");
    Serial.print(tempF);
    Serial.print(" F");
    Serial.println();

    Alarm.delay(1000); // wait one second between clock display
   }
5

Ok, how do I go about connecting the two?

6

You will use

 setSyncProvider(syncProvider);

The argument for the setSyncProvider function-- i.e. syncProvider -- is another function which will return the "unix time"-- that is the uint32_t (or time_t) value. The exact syntax of that function will depend on the library you are using for the DS3231.