RTC combined with servo device

Can you show us what you have so far

Have your already tried getting the servo to work using the standard servo library, same question for the RTC

What is the model of the servo, I would normally recommend NOT connecting the motors to the regulated output of the Arduino Power Supply as it invariably causes issues. Power it separately if you can

Yes the servo works heres the code below:

#include <Servo.h>

Servo myservo;  // create servo object to control a servo

int potpin = 0;  // analog pin used to connect the potentiometer

int val;    // variable to read the value from the analog pin

void setup()

{

  myservo.attach(9);  // attaches the servo on pin 9 to the servo object

}

void loop()

{

  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)

  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)

  myservo.write(val);                  // sets the servo position according to the scaled value

  delay(15);                           // waits for the servo to get there

}

the servo is the MG996R and the rtc 1307:

#include <Wire.h>

#include "RTClib.h"

RTC_DS1307 rtc;

void setup () {

  Serial.begin(57600);

#ifdef AVR

  Wire.begin();

#else

  Wire1.begin(); // Shield I2C pins connect to alt I2C bus on Arduino Due

#endif

  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(F(__DATE__), F(__TIME__)));

    // This line sets the RTC with an explicit date & time, for example to set

    // January 21, 2014 at 3am you would call:

    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));

  }

}

void loop () {

    DateTime now = rtc.now();

    Serial.print(now.year(), DEC);

    Serial.print('/');

    Serial.print(now.month(), DEC);

    Serial.print('/');

    Serial.print(now.day(), DEC);

    Serial.print(' ');

    Serial.print(now.hour(), DEC);

    Serial.print(':');

    Serial.print(now.minute(), DEC);

    Serial.print(':');

    Serial.print(now.second(), DEC);

    Serial.println();

    Serial.print(" since midnight 1/1/1970 = ");

    Serial.print(now.unixtime());

    Serial.print("s = ");

    Serial.print(now.unixtime() / 86400L);

    Serial.println("d");

    // calculate a date which is 7 days and 30 seconds into the future

    DateTime future (now.unixtime() + 7 * 86400L + 30);

    Serial.print(" now + 7d + 30s: ");

    Serial.print(future.year(), DEC);

    Serial.print('/');

    Serial.print(future.month(), DEC);

    Serial.print('/');

    Serial.print(future.day(), DEC);

    Serial.print(' ');

    Serial.print(future.hour(), DEC);

    Serial.print(':');

    Serial.print(future.minute(), DEC);

    Serial.print(':');

    Serial.print(future.second(), DEC);

    Serial.println();

    Serial.println();

    delay(3000);

}

So first things first (btw, you don't say what to do if and when the servo reaches 180deg or 360, do you stop, reset to zero, something else ?

Ignore the RTC initially and simply setup an LONG variable to hold the current system time (mills() )

every 60 seconds (60,000 mills) move the servo

#define interval 60000

#define changeAngle 60

#define maxAngle 180

#define minAngle 0

long mytimer = 0;

int myAngle = 0;

setup()

{

...

mytimer = mills();

}

loop()

{

...

if (mills() - myvariable > interval)

     {

     myAngle += changeAngle

     if (myAngle >= maxAngle)  myAngle = minAngle; // protect servo and sanity

     myservo.write(myAngle);

     mytimer = mills();                // setup timer for next loop

     }

// now do other stuff

}

This is not tested , I simply put it from head to page as I thought of it so you may need to do some work on it but it shows you the basics of how to get what you want, now its up to you

once you have this running, it will be a simple matter of changing the mills() to use the RTC and changing the values of the interval

... in setup and loop simply is where your other code may go, it is of course not valid in the real code

in fact yes, since a servo can rotate only 180 degrees after 180 degress i wanted it to return to zero.

ok yes so do you think every 1 minutes it can change 60 degrees?

You can make it change at what ever interval you like and as far as you like within its limits

just write the program based on what info I provided and then share your results, and we can help further

Peter

Did this code ever work?... because I am doing something similar and I just found out today that I should add an RTC because I do want my servo to function on set times of the day except instead of it would be 20 degrees then down -20 degrees. Originally I was going to convert all set hours into milli secs but that might mess up my order everyday for the hours i want it set on.Would you suggest getting the RTC?

Robert Peter Oakes I am doing something similar and I just found out today that I should add an RTC because I do want my servo to function on set times of the day except instead of it would be 20 degrees then down -20 degrees at a set time of day. Originally I was going to convert all set hours into milli secs but that might mess up my order everyday for the hours i want it set on.Would you suggest getting the RTC too?