It would run on the principles of Blink Without Delay.
You can run this on an UNO or most any Arduino as is, no jumpers or extra parts needed.
See how it works and how to make timers will be yours.
For a more full explanation, try going to the first Nick Gammon blog address at the bottom of this post, in my signature space.
/* Blink without Delay
Turns on and off a light emitting diode(LED) connected to a digital
pin, without using the delay() function. This means that other code
can run at the same time without being interrupted by the LED code.
The circuit:
* LED attached from pin 13 to ground.
* Note: on most Arduinos, there is already an LED on the board
that's attached to pin 13, so no hardware is needed for this example.
created 2005
by David A. Mellis
modified 8 Feb 2010
by Paul Stoffregen
--- and some more small fixes by GoForSmoke 2015
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay
*/
// constants won't change. Used here to
// set pin numbers:
const int ledPin = 13; // the number of the LED pin
// Variables will change:
int ledState = LOW; // ledState used to set the LED
unsigned long previousMillis = 0; // will store last time LED was updated
// the follow variables is a long because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
unsigned long interval = 1000UL; // interval at which to blink (milliseconds)
void setup()
{
// set the digital pin as output:
pinMode(ledPin, OUTPUT);
}
void loop()
{
// here is where you'd put code that needs to be running all the time.
// check to see if it's time to blink the LED; that is, if the
// difference between the current time and last time you blinked
// the LED is bigger than the interval at which you want to
// blink the LED.
if (millis() - previousMillis > interval)
{
// save the last time you blinked the LED
previousMillis += interval;
// if the LED is off turn it on and vice-versa:
if (ledState == LOW)
{
ledState = HIGH;
}
else
{
ledState = LOW;
}
// set the LED with the ledState of the variable:
digitalWrite(ledPin, ledState);
}
}