Power interrupter sketch

gistfile1.ino

// Power interrupter

#define POWER_OUT_PIN  4    // Note : sense is inverted, i.e. ON = LOW.
// Use of pin 4 on ATTiny allows for ISP-reprogramming

void setup()
{
  pinMode(POWER_OUT_PIN, OUTPUT);
}

void loop()
{
  digitalWrite(POWER_OUT_PIN, HIGH); 
  delay(2000);  // leave off for 2 secs
  
  digitalWrite(POWER_OUT_PIN, LOW);
  for (int ii = 0; ii < 12; ii++)
  {
    delay(30000);  // power on for 30 secs
  }
}