[code]
const int drivePin = 13; //
Drive Output 1

const int auxDrive = 6; //
Drive Output 2

const int delayDrive = 4000; //
Drive ON Time in ms

const int delayFeed1 = 28800000;
// Feed Interval 1 in ms

const int delayFeed2 = 57600000;
// Feed Interval 2 in ms

/*

  Example:

  1 hour = 60 minutes

  = 60 ? 60 seconds

  = 3600 seconds = 3600 ? 1000 milliseconds

  = 3,600,000 ms

  So, 8 h = 8 x 60 x 60 x 1000 = 2,88,00,000

  And, 16 h = 16 x 60 x 60 x1000 = 5,76,00,000

*/

void setup() {

  pinMode(drivePin, OUTPUT);

  pinMode(auxDrive, OUTPUT);

}

 

void loop() {

  digitalWrite(drivePin, HIGH);

  digitalWrite(auxDrive, HIGH);

  delay(delayDrive);

  digitalWrite(drivePin, LOW);

  digitalWrite(auxDrive, LOW);

  delay(delayFeed1);

 

  digitalWrite(drivePin, HIGH);

  digitalWrite(auxDrive, HIGH);

  delay(delayDrive);

  digitalWrite(drivePin, LOW);

  digitalWrite(auxDrive, LOW);

  delay(delayFeed2);

}

[/code]