Hello,
I have a project and part of it involve an RTC clock and a servo. see attachment below.
I already built the circuit but I am completely lost with the sketch.
The objective of the project is :
After every 3 hours the servo automatically rotate 60 degrees.
Hope you could help me in the sketch.
Thanks in advance!
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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
