Arduino 2-Step Programmable Timer Circuit
In this article we learn how to make a simple 2-step Arduino
programmable timer circuit, which can be used to switch an
electrical load ON/OFF with independently adjustable ON and OFF
timings.
For example if you want a light to remain ON for 24 hours and OFF
for 2 hours, you can simply do this through a quick modification in
the program code. In the same way you can customize the output
timings to any other desired set of time intervals by changing the
code appropriately.
You just have to-compile and upload-the following code to your
Arduino board and start the timer function as per your specific
application needs.
Program Code
void setup(){
pinMode(13, OUTPUT);
}
void loop(){
digitalWrite(13, HIGH);
delay(86400000);
digitalWrite(13, LOW);
delay(3600000);
}
In the above example code the
lines-delay(86400000);-and-delay(3600000);-determine the output
ON and OFF delay time intervals respectively, in milliseconds. Here,
the figure-86400000-milliseconds corresponds to 24 hours,
while-3600000-exhibits 1 hour delay.
You can customize these two values as per your personal preference
to get the required output delays.
