Hello,
I want a valve to be open if certain condition is satisfied for 5 sec and then close it , wait for 5 sec before opening it again for 5 sec.
dpoornima:
Hello,I want a valve to be open if certain condition is satisfied for 5 sec and then close it , wait for 5 sec before opening it again for 5 sec.
With this code, am able to open the valve for 5 sec but am not able to close it for 5 sec before opening it again
void loop()
const long interval = 5000;
static unsigned long int startTime = millis();
static unsigned long int offtime=0;
if (solstate==false && Pdiff >= 20)
{
digitalWrite(4, HIGH);
startTime = millis(); //saves the time it is open
solstate = true;
}
}
//turns it on for 5 sec
if (solstate == true && millis() - startTime >= interval)
{
digitalWrite(4, LOW);
offtime += interval; // ? turn it off for 5 sec ?
solstate = false;
}
Are you sure the sketch will compile? 
Are you sure the sketch will compile?
This is just the part of the sketch am trying to keep the solenoid open for 5 sec and wait for 5 sec.
It complies and even opens for 5 sec.
dpoornima:
This is just the part of the sketch am trying to keep the solenoid open for 5 sec and wait for 5 sec.
It complies and even opens for 5 sec.
Don't tease us. Post the complete program.
You have only shown the code for the first part and it seems to be going in the right direction ...
Have a look at how millis() is used to manage timing in Several things at a time
...R
The code in Reply #4 is still not complete.
...R
I'm confused. You have this piece of code
if (solstate == true && millis() - startTime >= interval)
{
digitalWrite(4, LOW);
offtime = + interval;
solstate = false;
}
but you don't seem to be making use of offtime
...R
but you don't seem to be making use of offtime
I am confused as to how to use the off time.
Can you please help me figure it out.
Hello,
I figured it out!
Thanks for all the insights!